List of the Paleozoic life of Illinois

• †Acantherpestes
  • †Acantherpestes inequalis – type locality for species
  • †Acantherpestes major – type locality for species
• †Acanthoparypha
  • †Acanthoparypha subcircularis
• †Acanthopecten
  • †Acanthopecten carboniferus
• †Acanthotriletes
  • †Acanthotriletes aculeolatus
  • †Acanthotriletes dimorphus
• †Achatella
  • †Achatella katharina
• †Acrocrinus
  • †Acrocrinus constrictus
• †Actinoceras
• †Actinopteria
  • †Actinopteria boydi
• †Adeloblatta
  • †Adeloblatta columbiana – type locality for species
  • †Adeloblatta sellardsi
• †Adeloneura – type locality for genus
  • †Adeloneura thompsoni – type locality for species
• †Adiaphtharsia – type locality for genus
  • †Adiaphtharsia ferrea – type locality for species
• †Adiphlebia – type locality for genus
  • †Adiphlebia lacoana – type locality for species
• †Adolarryia – type locality for genus
  • †Adolarryia bairdi – type locality for species
• †Aenigmatodes – type locality for genus
  • †Aenigmatodes danielsi – type locality for species
• †Aetophlebia – type locality for genus
  • †Aetophlebia singularis – type locality for species
• †Agogoblattina
  • †Agogoblattina occidua – type locality for species
• †Ahrenisporites
  • †Ahrenisporites guerickei
• †Ahrensisporites
  • †Ahrensisporites guerickei
• †Alanympha – type locality for genus
  • †Alanympha richardsoni – type locality for species
• †Alatisporites
  • †Alatisporites hexalatus
  • †Alatisporites punctatus
  • †Alatisporites trialatus
• 

  Fossilized fronds of the Carboniferous-Early Cretaceous seed fern Alethopteris
  †Alethopteris
  • †Alethopteris decurrens
  • †Alethopteris lonchitica
  • †Alethopteris owenii
  • †Alethopteris serlii
• †Allagecrinus
  • †Allagecrinus mccraneyensis – type locality for species
• †Alloiopteris
  • †Alloiopteris gracillima
  • †Alloiopteris quercifolia – or unidentified comparable form
  • †Alloiopteris sternbergi
• †Allosocrinus
  • †Allosocrinus bronaughi
• †Amarixys
  • †Amarixys gracilis – type locality for species
  • †Amarixys stellaris – type locality for species
  • †Amarixys sulcata – type locality for species
• †Amaurotoma
  • †Amaurotoma leavenworthana
• †Ambocoelia
  • †Ambocoelia louisianaensis
  • †Ambocoelia minuta
• †Ambonychia – tentative report
• †Ametretus – type locality for genus
  • †Ametretus laevis – type locality for species
• †Ameura
• †Amousus – type locality for genus
  • †Amousus mazonus – type locality for species
• 

  Life restoration of the Carboniferous amphibian Amphibamus
  †Amphibamus – type locality for genus
  • †Amphibamus grandiceps – type locality for species
• †Amphicoelia
• †Amphilichas
  • †Amphilichas subdisjunctus
• †Amphiscapha
  • †Amphiscapha subrugosa
• †Amplexizaphrentis
  • †Amplexizaphrentis spinulosus
• †Amynilyspes – type locality for genus
  • †Amynilyspes wortheni – type locality for species
• †Anaphragma
  • †Anaphragma mirabile
• †Anapiculatisporites
  • †Anapiculatisporites grundensis
  • †Anapiculatisporites spinosus
• †Anastrophia
• †Anegertus – type locality for genus
  • †Anegertus cubitalis – type locality for species
• †Anematina
  • †Anematina proutana
• †Anepitedius – type locality for genus
  • †Anepitedius giraffa – type locality for species
• 

  Fossil of the Carboniferous horsetail relative Annularia
  †Annularia
  • †Annularia asteris – or unidentified comparable form
  • †Annularia cuspidata
  • †Annularia stellata
  • †Annularia vernensis – or unidentified comparable form
• †Anobasicrinus
  • †Anobasicrinus brevis – type locality for species
• †Anomphalus – type locality for genus
  • †Anomphalus rotulus – type locality for species
• †Anthracoceras
  • †Anthracoceras wanlessi – type locality for species
• †Anthracophausia
  • †Anthracophausia ingelsorum
• †Anthracoscorpio – tentative report
• †Anthracospirifer
  • †Anthracospirifer leidyi
• †Anthracothremma – type locality for genus
  • †Anthracothremma robusta – type locality for species
• †Anthrakoris – type locality for genus
  • †Anthrakoris aetherius – type locality for species
• †Antiquatonia
  • †Antiquatonia portlockianus – or unidentified comparable form
• †Antirhynchonella
  • †Antirhynchonella ventricosa – or unidentified comparable form
• †Aphantomartus
  • †Aphantomartus pustulatus – type locality for species
• †Apiculatasporites
  • †Apiculatasporites latigranifer
  • †Apiculatasporites setulosus
  • †Apiculatasporites spinososaetosus
  • †Apiculatasporites variocorneus
  • †Apiculatasporites variusetosus
• †Apiculatisporites
  • †Apiculatisporites abditus
  • †Apiculatisporites frequentisporites
  • †Apiculatisporites lappites
  • †Apiculatisporites setulosus
• †Apithanus – type locality for genus
  • †Apithanus jocularis – type locality for species
• †Apographiocrinus
  • †Apographiocrinus typicalis
• †Archaeocalamites
  • †Archaeocalamites radiatus
• †Archaeocalyptocrinus
  • †Archaeocalyptocrinus obconicus
• †Archaeocidaris – tentative report
• †Archaeologus – type locality for genus
  • †Archaeologus falcatus – type locality for species
• †Archaeopteris
  • †Archaeopteris stricta
• 

  Fossils of the Carboniferous-Permian bryozoan Archimedes
  †Archimedes
  • †Archimedes communis
  • †Archimedes compactus
  • †Archimedes invaginatus
  • †Archimedes lativolvis
  • †Archimedes macfarlani
  • †Archimedes swallovanus
  • †Archimedes terebriformis
• †Archimylacris
  • †Archimylacris paucinervis – type locality for species
• †Archisymplectes – type locality for genus
  • †Archisymplectes rhothon – type locality for species
• †Architarbus – type locality for genus
  • †Architarbus minor – type locality for species
  • †Architarbus rotundatus – type locality for species
• †Archiulus – tentative report
  • †Archiulus glomeratus – type locality for species
• †Archoblattina – type locality for genus
  • †Archoblattina beecheri – type locality for species
  • †Archoblattina scudderi – type locality for species
• †Arctinurus
  • †Arctinurus boltoni
  • †Arctinurus chicagoensis
• †Argentiproductus
  • †Argentiproductus auriculatus
• 

  Illustration of a fossil of the Carboniferous-Permian spider Arthrolycosa. Charles Emerson Beecher (1889).
  †Arthrolycosa – type locality for genus
  • †Arthrolycosa antiqua – type locality for species
  • †Arthrolycosa danielsi – type locality for species
• †Arthropitys
  • †Arthropitys communis
• †Artisia
  • †Artisia transversa
• †Asemoblatta
  • †Asemoblatta danielsi – type locality for species
  • †Asemoblatta mazona – type locality for species
• †Asinomphalus
  • †Asinomphalus antiqua
• †Asolanus
  • †Asolanus camptotaenia
• †Astartella
  • †Astartella compacta
  • †Astartella concentrica
• †Asterophyllites
  • †Asterophyllites equisetiformis – or unidentified comparable form
  • †Asterophyllites longifolius
  • †Asterophyllites multifolia
• †Asterotheca
  • †Asterotheca miltoni – or unidentified comparable form
• †Astraeospongium
• †Asyncritus – type locality for genus
  • †Asyncritus reticulatus – type locality for species
• †Athyris
  • †Athyris vittata
• 

  Fossilized shell of the Late Ordovician-Carboniferous brachiopod Atrypa
  †Atrypa
  • †Atrypa putilla
  • †Atrypa reticularis – report made of unidentified related form or using admittedly obsolete nomenclature
• †Aulacotheca
• †Aulertupus – type locality for genus
  • †Aulertupus tembrocki – type locality for species
• †Aviculopecten
  • †Aviculopecten fasciculatus
• † Avonia
  • †Avonia pyidata
• †Axiodeaneia
  • †Axiodeaneia glenparkensis
• †Axiologus – type locality for genus
  • †Axiologus thoracicus – type locality for species

• †Balteosporites
  • †Balteosporites minutus
• †Bandringa – type locality for genus
  • †Bandringa herdinae – type locality for species
  • †Bandringa rayi – type locality for species
• †Bassleroceras
  • †Bassleroceras lasallense
• †Baylea
  • †Baylea minuta – type locality for species
  • †Baylea sinuatus – type locality for species
  • †Baylea subconstricta – type locality for species
• †Beecheria
  • †Beecheria illinoisense
  • †Beecheria paraplicata
• †Belemnospongia
  • †Belemnospongia parmula
• 

  Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon
  †Bellerophon
  • †Bellerophon chesterensis – type locality for species
  • †Bellerophon incomptus – type locality for species
  • †Bellerophon spergensis
  • †Bellerophon stevensianus
  • †Bellerophon tenuilineata – type locality for species
• †Bellinurus
  • †Bellinurus lacoei – type locality for species
• †Bembexia
  • †Bembexia gradilispira – type locality for species
• †Beyrichiella
  • †Beyrichiella confluens
• †Bicarina
  • †Bicarina petilitornata
• †Bighornia
  • †Bighornia patella – or unidentified comparable form
• †Bizarrea – type locality for genus
  • †Bizarrea obscura – type locality for species
• †Blattoidea
  • †Blattoidea anceps – type locality for species
  • †Blattoidea carri – type locality for species
  • †Blattoidea melanderi
  • †Blattoidea schuchertiana – type locality for species
  • †Blattoidea sellardsiana – type locality for species
• †Brabeocrinus – type locality for genus
  • †Brabeocrinus christinae – type locality for species
• †Brachycycloceras
  • †Brachycycloceras normale
• 

  Life restoration of the Carboniferous amphibian Brachydectes
  †Brachydectes
  • †Brachydectes newberryi
• †Brachythyris
  • †Brachythyris hortonensis
• †Brevilamnulella – tentative report
  • †Brevilamnulella thebesensis
• †Bucania
  • †Bucania batchtownensis – type locality for species
• †Bulimorpha
  • †Bulimorpha minor
  • †Bulimorpha whitfieldi – type locality for species
• †Bumastoides
  • †Bumastoides billingsi
• 

  Fossil of the Early Ordovician-Silurian trilobite Bumastus
  †Bumastus
  • †Bumastus armata
  • †Bumastus armatus – or unidentified comparable form
  • †Bumastus chicagoensis
  • †Bumastus cuniculus – or unidentified comparable form
  • †Bumastus graftonensis
  • †Bumastus insignis
  • †Bumastus springfieldensis
  • †Bumastus transversalis
• †Buthiscorpius
  • †Buthiscorpius lemayi – type locality for species

• †Cacurgus – type locality for genus
  • †Cacurgus spilopterus – type locality for species
• †Cadiospora
  • †Cadiospora fithiana
  • †Cadiospora magna
• 

  Fossilized stems from the Carboniferous-Permian horsetail relative Calamites
  †Calamites
  • †Calamites cistiiformis – or unidentified comparable form
  • †Calamites rectangularis
  • †Calamites suckowii
• †Calamocarpon
  • †Calamocarpon insignis
• †Calamodendron
  • †Calamodendron americanum
• †Calamospora
  • †Calamospora breviradiata
  • †Calamospora flava
  • †Calamospora flexilis
  • †Calamospora hartungiana
  • †Calamospora liquida
  • †Calamospora minuta
  • †Calamospora mutabilis
  • †Calamospora pedata
  • †Calamospora straminea
• †Calamostachys
  • †Calamostachys americana
  • †Calamostachys andanensis
  • †Calamostachys inversibractis – type locality for species
• †Calceocrinus
• †Calliasterella
  • †Calliasterella americana
• †Calliocrinus
  • †Calliocrinus cornatus
  • †Calliocrinus cornutus
  • †Calliocrinus pentangularis
• 

  Fossilized fronds of the Carboniferous seed fern Callipteridium
  †Callipteridium
• †Calvinia
  • †Calvinia edgewoodensis
• †Calymene
  • †Calymene breviceps
  • †Calymene celebra
• †Calyptaulax
  • †Calyptaulax callicephala
• †Camarophorella
  • †Camarophorella buckleyi – or unidentified comparable form
• †Camarotoechia
• †Camerella
• †Camptotriletes
  • †Camptotriletes bucculentus
  • †Camptotriletes triangularis
• †Cancrinella
  • †Cancrinella boonensis
• †Cannophyllites
  • †Cannophyllites abbreviata
  • †Cannophyllites dawsoni
  • †Cannophyllites fasciculata
  • †Cannophyllites marginata
  • †Cannophyllites rectinervis
  • †Cannophyllites southwelli
• †Carbonocoryphe
  • †Carbonocoryphe planucauda
• †Carbonympha – type locality for genus
  • †Carbonympha herdinai – type locality for species
• †Cardiocarpon
• †Cardiopteridium
• †Cardiothyris
  • †Cardiothyris pristina
• †Carpocrinus
• †Caryocrinites
  • †Caryocrinites ornatus – or unidentified comparable form
• 

  Life restoration of the Carboniferous Chimaera relative Caseodus
  †Caseodus
  • †Caseodus basalis – type locality for species
• †Catadyesthus
  • †Catadyesthus priscus
• †Caulopteris
• †Cephalerpeton – type locality for genus
  • †Cephalerpeton ventriarmatum – type locality for species
• †Ceratiocaris
  • †Ceratiocaris markhami
• †Ceratocephala
  • †Ceratocephala goniata
• †Ceraurinella
  • †Ceraurinella tenuisculptus
• †Ceraurinus
  • †Ceraurinus platycanthus
• †Cerauromerus
  • †Cerauromerus hydei
• 

  Fossil of the Middle-Late Ordovician trilobite Ceraurus
  †Ceraurus
  • †Ceraurus globulobatus
  • †Ceraurus pleurexanthemus
• †Cervifurca
  • †Cervifurca nasuta
• †Chaenomya
• †Chaetetes
• †Cheirurus
  • †Cheirurus niagarensis – or unidentified comparable form
  • †Cheirurus patens
• †Cheliphlebia – type locality for genus
  • †Cheliphlebia carbonaria – type locality for species
  • †Cheliphlebia mazona – type locality for species
• †Chenilleophycus
  • †Chenilleophycus godfreyensis
• †Chicagocrinus
  • †Chicagocrinus ornatus
• †Chirodus
  • †Chirodus orbicularis
• †Chlidonocrinus
  • †Chlidonocrinus erectus – type locality for species
• †Chlidophorus
• †Chonetes
  • †Chonetes ornatus
• †Chonetinella
• †Chrestotella
  • †Chrestotella danae – type locality for species
• †Chrestotes – type locality for genus
  • †Chrestotes lapidea – type locality for species
• †Cirratriradites
  • †Cirratriradites annulatus
  • †Cirratriradites annuliformis
  • †Cirratriradites tenuis
• †Clathrocrinus – type locality for genus
  • †Clathrocrinus clathratus – type locality for species
  • †Clathrocrinus clinatus – type locality for species
• †Clathrodictyon
  • †Clathrodictyon vesiculosum
• †Clathrospira
  • †Clathrospira subconica
• 

  Fossilized shell of the Middle Devonian-Permian brachiopod Cleiothyridina
  †Cleiothyridina
  • †Cleiothyridina atrypoides
  • †Cleiothyridina sublamellosa
• †Clepsydrops – type locality for genus
  • †Clepsydrops collettii – type locality for species
  • †Clepsydrops vinslovii – type locality for species
• †Cliftonia
  • †Cliftonia tubulistriata
• †Clonocrinus
  • †Clonocrinus chicagoensis
  • †Clonocrinus niagarensis
• 

  Life restoration (foreground) of the Permian-Jurassic lobe-finned fish Coelacanthus
  †Coelacanthus
  • †Coelacanthus exiguus
• †Coelocystis
  • †Coelocystis subglobosus
• †Columinisporites
  • †Columinisporites ovalis
• †Complexisporites
  • †Complexisporites chalonerii
• †Composita
  • †Composita argentea
  • †Composita matutina
  • †Composita subtilita
  • †Composita trinuclea
• †Compsaster
  • †Compsaster formosus
• †Condrathyris
  • †Condrathyris perplexa
• †Conocardium
  • †Conocardium chesterensis – type locality for species
• †Contocrinus
  • †Contocrinus coupi – type locality for species
• †Converrucosisporites
  • †Converrucosisporites subverrucosus
• †Convolutispora
  • †Convolutispora florida
  • †Convolutispora fromensis
• †Cooperoceras
• †Cordaianthus
• †Cordaicarpus
• †Cordaicladus
• 

  Fossilized foliage of the Carboniferous-Permian conifer relative Cordaites
  †Cordaites
  • †Cordaites communis
  • †Cordaites principalis
• †Cornulites
• †Corynepteris
  • †Corynepteris erosa – or unidentified comparable form
• †Crania
  • †Crania dodgei
• †Craniops
• †Crassiproetus
  • †Crassiproetus occidens
• †Crassispora
  • †Crassispora kosankei
  • †Crassispora plicata
• 

  Fossilized skeleton of the Carboniferous-Permian reptile relative Cricotus
  †Cricotus – type locality for genus
  • †Cricotus heteroclitus – type locality for species
• †Cristatisporites
  • †Cristatisporites alpernii
  • †Cristatisporites indignabundus
• †Crossotheca
• †Crotalocrinites
  • †Crotalocrinites cora
  • †Crotalocrinites vanhornei
• †Crurithyris
  • †Crurithyris levicula – or unidentified comparable form
  • †Crurithyris planoconvexa
• †Cryptothyrella
  • †Cryptothyrella ovoides
• 

  Fossil of the Carboniferous shark Ctenacanthus
  †Ctenacanthus
  • †Ctenacanthus buttersi – type locality for species
• †Ctenodonta
  • †Ctenodonta concinna
• †Curculioides
  • †Curculioides gigas – type locality for species
  • †Curculioides mcluckiei – type locality for species
  • †Curculioides scaber – type locality for species
• †Curriella – tentative report
• †Cyathocrinites
• †Cyclites
  • †Cyclites globosa – type locality for species
• †Cyclogranisporites
  • †Cyclogranisporites aureus
  • †Cyclogranisporites breviradiata
  • †Cyclogranisporites breviradiatus
  • †Cyclogranisporites leopoldi
  • †Cyclogranisporites micaceus
  • †Cyclogranisporites microgranus
  • †Cyclogranisporites minutus
  • †Cyclogranisporites obliquus
  • †Cyclogranisporites orbicularis
  • †Cyclogranisporites staplini
• †Cyclonema
  • †Cyclonema daytonensis
  • †Cyclonema intermedium
• †Cyclus
  • †Cyclus americanus – type locality for species
• †Cymatospira
  • †Cymatospira welleri
• †Cyperites
• †Cyphaspis
  • †Cyphaspis globosus
  • †Cyphaspis intermedia
• †Cyphocrinus
  • †Cyphocrinus chicagoensis
• †Cypricardella
  • †Cypricardella bellistriata
• †Cyrtia
• 

  Restoration of the Cambrian-Middle Devonian nautiloid cephalopod Cyrtoceras
  †Cyrtoceras
• Cytherella
  • †Cytherella glandella
• †Cytherellina
• †Cytherodon – tentative report
  • †Cytherodon appresus
• †Cytocrinus

• †Dabasacanthus – type locality for genus
  • †Dabasacanthus inskasi – type locality for species
• †Dactylotheca
  • †Dactylotheca aspera
• †Dalejina
• †Dalmanella
  • †Dalmanella edgewoodensis
• 

  Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites
  †Dalmanites
  • †Dalmanites danai
  • †Dalmanites illinoisensis
  • †Dalmanites obex
  • †Dalmanites platycaudatus
• †Danielsiella – type locality for genus
  • †Danielsiella priscula – type locality for species
• †Dasciocrinus
  • †Dasciocrinus spinifer
• †Dasyleptus
• †Dawsonoceras
• †Decoroproetus
• †Deiphon
  • †Deiphon americanus
• †Delicaster – type locality for genus
  • †Delicaster enigmaticus
• †Delthyris
• †Deltoidospora
  • †Deltoidospora levis
  • †Deltoidospora priddyi
  • †Deltoidospora sphaerotriangula
• †Denayella
  • †Denayella rotalia – or unidentified comparable form
• †Densosporites
  • †Densosporites annulatus
  • †Densosporites lobatus – or unidentified comparable form
  • †Densosporites ruhus
  • †Densosporites sinuosus
  • †Densosporites sphaerotriangularis
  • †Densosporites triangularis
• †Derbyia
  • †Derbyia crassa
• †Derbyoides
  • †Derbyoides nebrascensis
• †Desmograptus
  • †Desmograptus micronematodes
• †Desmopteris
• †Devonatrypa
• †Devononema – type locality for genus
  • †Devononema typicum – type locality for species
• †Diagonodictya – type locality for genus
  • †Diagonodictya crusta – type locality for species
• †Diamphidiocystis
  • †Diamphidiocystis drepanon
• †Diaphorodendron
  • †Diaphorodendron rimosum
• †Diaphragmus
  • †Diaphragmus fasciculatus
• †Dicalamophyllum
  • †Dicalamophyllum americanum
• †Dichocrinus
  • †Dichocrinus nola – type locality for species
• †Dicksonites
• †Dicoelosia
• †Dicranopeltis
  • †Dicranopeltis decipiens
• †Dictyoclostus
  • †Dictyoclostus inflatus
• †Dictyomonolites
  • †Dictyomonolites swadei
• †Dictyonema
  • †Dictyonema crassibasale
  • †Dictyonema retiforme
  • †Dictyonema tenellum
• †Dictyophlois
  • †Dictyophlois reticulata var. illinoisensis
• †Dictyotomaria
  • †Dictyotomaria depressus – type locality for species
  • †Dictyotomaria wortheni – type locality for species
  • †Dictyotomaria yochelsoni
• †Dictyotriletes
  • †Dictyotriletes bireticulatus
  • †Dictyotriletes danvillensis
  • †Dictyotriletes densoreticulatus
  • †Dictyotriletes distortus
  • †Dictyotriletes falsus – or unidentified comparable form
  • †Dictyotriletes reticulocingulum – or unidentified comparable form
• †Dictyoxylon – or unidentified comparable form
• †Dieconeura – type locality for genus
  • †Dieconeura arcuata – type locality for species
  • †Dieconeura mazona – type locality for species
• †Dielasmella
  • †Dielasmella compressa
• †Diexodus – type locality for genus
  • †Diexodus debilis – type locality for species
• †Dimerocrinites
  • †Dimerocrinites occidentalis
  • †Dimerocrinites pentangularis
• †Dinobolus
• 

  Fossilized axial skeleton of the Carboniferous-Permian amphibian Diplocaulus
  †Diplocaulus – type locality for genus
  • †Diplocaulus salamandroides – type locality for species
• †Diplothmema
  • †Diplothmema cheathami
• †Discotarbus – type locality for genus
  • †Discotarbus deplanatus – type locality for species
• †Distortitisporites
  • †Distortitisporites illinoiensis
• †Ditomopyge
  • †Ditomopyge scitula
• †Dolichoharpes
  • †Dolichoharpes uniserialis
• †Domatoceras
  • †Domatoceras mattoonense – type locality for species
  • †Domatoceras wortheni – type locality for species
• †Donaldina
  • †Donaldina americana
  • †Donaldina fountainensis – type locality for species
  • †Donaldina marigoldensis
  • †Donaldina pygmaea – type locality for species
• †Dorycrinus
  • †Dorycrinus mississippiensis
• †Dragonympha – type locality for genus
  • †Dragonympha srokai – type locality for species
• †Dudleyaspis
  • †Dudleyaspis vanhornei

• †Echinaria
• †Echinoconchus
  • †Echinoconchus alternatus
• 

  Life restoration of the Late Devonian-Carboniferous Chimaera relative Edestus
  †Edestus
  • †Edestus crenulatus – type locality for species
  • †Edestus serratus – type locality for species
• †Edmondia
  • †Edmondia ovata
• †Eileticus – type locality for genus
  • †Eileticus aequalis – type locality for species
  • †Eileticus anthracinus – type locality for species
• †Elasmonema
  • †Elasmonema corrugata
• †Elaterites
  • †Elaterites triferens
• †Elibatocrinus
  • †Elibatocrinus elegans – type locality for species
• 

  Fossilized skeleton of the Carboniferous-Permian bony fish Elonichthys
  †Elonichthys
  • †Elonichthys disjunctus – type locality for species
  • †Elonichthys peltigerus
  • †Elonichthys perpennatus
• †Encrinurus
  • †Encrinurus egani
• †Endelocrinus
  • †Endelocrinus tumidus
• †Endoiasmus – type locality for genus
  • †Endoiasmus reticulatus – type locality for species
• †Endosporites
  • †Endosporites globiformis
  • †Endosporites plicatus
• †Enoploura
• †Enteletes
  • †Enteletes hemiplicata
• †Eoasinites
• †Eobronteus
  • †Eobronteus slocomi
• †Eoctonus – type locality for genus
  • †Eoctonus miniatus – type locality for species
• †Eodictyonella
• †Eohalysiocrinus – tentative report
• †Eolissochonetes
• †Eomartiniopsis
  • †Eomartiniopsis kinderhookensis
• †Eophacops
  • †Eophacops handwerki
• †Eoplectodonta
• †Eoscorpius – type locality for genus
  • †Eoscorpius carbonarius – type locality for species
• †Eospirifer
  • †Eospirifer radiatus
• †Eospirigerina
  • †Eospirigerina putilla
• †Eotrochus
  • †Eotrochus marigoldensis
• †Ephippioceras
  • †Ephippioceras moinellae – type locality for species
• †Epideigma – type locality for genus
  • †Epideigma elegans – type locality for species
• †Eremopteris
  • †Eremopteris grandis
  • †Eremopteris inaequilateralis
• †Erisocrinus
  • †Erisocrinus typus
• †Erratencrinurus
  • †Erratencrinurus vigilans
• †Escharopora
  • †Escharopora patens
• †Eubleptus – type locality for genus
  • †Eubleptus danielsi – type locality for species
  • †Eubleptus maculosus – type locality for species
• †Eubrodia – type locality for genus
  • †Eubrodia dabasinskasi – type locality for species
• †Eucaenus – type locality for genus
  • †Eucaenus ovalis – type locality for species
  • †Eucaenus pusillus – type locality for species
  • †Eucaenus rotundatus – type locality for species
• 

  Fossilized calyx of the Silurian-Middle Devonian crinoid ("sea lily") Eucalyptocrinites
  †Eucalyptocrinites
  • †Eucalyptocrinites asper
  • †Eucalyptocrinites crassus
  • †Eucalyptocrinites depressus
  • †Eucalyptocrinites egani
  • †Eucalyptocrinites inornatus
  • †Eucalyptocrinites ornatus
  • †Eucalyptocrinites rotundus
• †Euchondria
  • †Euchondria levicula
• †Euconospira
  • †Euconospira sturgeoni
  • †Euconospira waterlooensis – type locality for species
• †Eudoxina
  • †Eudoxina subrotunda
• †Euhydrodiskos – type locality for genus
  • †Euhydrodiskos diktyotos – type locality for species
• †Eumetria
  • †Eumetria vera
• †Eumicrerpeton – type locality for genus
  • †Eumicrerpeton parvum – type locality for species
• †Eunema
  • †Eunema centralis – type locality for species
  • †Eunema fasciata – type locality for species
• 

  Fossilized shell of the Silurian-Permian sea snail Euomphalus
  †Euomphalus
  • †Euomphalus planodorsatus
  • †Euomphalus similis
• †Euonychocrinus
  • †Euonychocrinus simplex – type locality for species
• †Euphemerites
  • †Euphemerites affinis – type locality for species
  • †Euphemerites gigas – type locality for species
  • †Euphemerites simplex – type locality for species
• †Euphemites
  • †Euphemites callosus – type locality for species
  • †Euphemites carbonarius
  • †Euphemites lentiformis – type locality for species
  • †Euphemites randolphensis – type locality for species
• 

  Illustration of fossil of the Carboniferous millipede Euphoberia
  †Euphoberia – type locality for genus
  • †Euphoberia anguilla – type locality for species
  • †Euphoberia armigera – type locality for species
  • †Euphoberia carri – type locality for species
  • †Euphoberia cuspidata – type locality for species
  • †Euphoberia flabellata – type locality for species
  • †Euphoberia granosa
  • †Euphoberia horrida – type locality for species
  • †Euphoberia hystricosa – type locality for species
  • †Euphoberia simplex – type locality for species
  • †Euphoberia spinulosa – type locality for species
  • †Euphoberia tracta – type locality for species
• †Euryzone
  • †Euryzone latitornata
• †Eusphenopteris
  • †Eusphenopteris morrowensis
• †Exallaspis
  • †Exallaspis illinoisensis
• †Exocrinus
  • †Exocrinus wanni
• †Exoriocrinus – type locality for genus
  • †Exoriocrinus lasallensis

• †Fasciculiconcha
  • †Fasciculiconcha knighti
• 

  Fossil of the Late Ordovician-Permian tabulate coral Favosites
  †Favosites
• †Fenestella
• †Ferganella
• †Fistulipora
  • †Fistulipora excellens
  • †Fistulipora incrustans
  • †Fistulipora perdensa
• †Fletcheria
• †Florinites
  • †Florinites antiquus
  • †Florinites grandis
  • †Florinites mediapudens
  • †Florinites mediaudens
  • †Florinites millotti
  • †Florinites similis
  • †Florinites triletus
  • †Florinites visendus
  • †Florinites volans
• †Fraipontia
  • †Fraipontia bella – type locality for species

• †Galateacrinus
  • †Galateacrinus coacervatus – type locality for species
• †Gazacrinus
  • †Gazacrinus major
  • †Gazacrinus minor
• †Genentomum – type locality for genus
  • †Genentomum validum – type locality for species
• †Geralinura
  • †Geralinura carbonaria – type locality for species
• †Gerapompus
  • †Gerapompus blattinoides – type locality for species
  • †Gerapompus extensus – type locality for species
  • †Gerapompus schucherti – type locality for species
• †Geraroides
  • †Geraroides maximus – type locality for species
• †Gerarulus – type locality for genus
  • †Gerarulus radialis – type locality for species
• †Gerarus – type locality for genus
  • †Gerarus collaris – type locality for species
  • †Gerarus constrictus – type locality for species
  • †Gerarus danielsi – type locality for species
  • †Gerarus mazonus – type locality for species
  • †Gerarus vetus – type locality for species
• †Geratarbus – type locality for genus
  • †Geratarbus lacoei – type locality for species
• †Gigantopteris
  • †Gigantopteris dawsoni
  • †Gigantopteris ovata
• †Girtyella
  • †Girtyella indianensis
• †Girtyspira
  • †Girtyspira canaliculata
  • †Girtyspira pygmaea – type locality for species
• †Gissocrinus
• †Glabrocingulum
  • †Glabrocingulum chesterensis
  • †Glabrocingulum grayvillense
• †Glaphyrophlebia – type locality for genus
  • †Glaphyrophlebia pusilla – type locality for species
• 

  Fossilized tooth of the Carboniferous shark Glikmanius
  †Glikmanius
  • †Glikmanius occidentalis
• †Globozyga
  • †Globozyga tenuistriata
• †Glyptambon
  • †Glyptambon verrucosus
• †Glyptopleura
  • †Glyptopleura costata
• †Gomphocystites
• †Gondolella
  • †Gondolella pohli
• †Gonioloboceras
  • †Gonioloboceras parrishi – type locality for species
• †Goniophora – tentative report
• †Gosseletina
  • †Gosseletina johnsoni
  • †Gosseletina subglobosa
• †Grabauphyllum
  • †Grabauphyllum johnstoni
• †Graeophonus
  • †Graeophonus scudderi – type locality for species
• †Granasporites
  • †Granasporites medius
• †Granulatispoites
  • †Granulatispoites piroformis
• †Granulatisporites
  • †Granulatisporites adnatoides
  • †Granulatisporites granularis
  • †Granulatisporites granulatus
  • †Granulatisporites livingstonensis
  • †Granulatisporites microgranifer
  • †Granulatisporites minutus
  • †Granulatisporites pallidus
  • †Granulatisporites pannosites
  • †Granulatisporites parvus – or unidentified comparable form
  • †Granulatisporites piroformis
  • †Granulatisporites verrucosus
• †Greenops
• 

  Life restoration of the Carboniferous four-limbed animal precursor Greererpeton
  †Greererpeton
  • †Greererpeton burkmorani
• †Griffithidella
  • †Griffithidella alternata
  • †Griffithidella doris
• †Grumosisporites
  • †Grumosisporites rufus – or unidentified comparable form
  • †Grumosisporites varioreticulatus
• †Gulpenia
  • †Gulpenia limburgensis
• †Gypidula
• †Gyrophlebia – type locality for genus
  • †Gyrophlebia longicollis – type locality for species

• †Hadentomum – type locality for genus
  • †Hadentomum americanum – type locality for species
• †Hadrachne – type locality for genus
  • †Hadrachne horribilis – type locality for species
• †Haeretocrinus
  • †Haeretocrinus macoupinesis
  • †Haeretocrinus wagneri – type locality for species
• †Hagnocrinus – tentative report
  • †Hagnocrinus dubius
• †Hallicystis
  • †Hallicystis elongata
• 

  Fossil of the Ordovician bryozoan ("moss animal") Hallopora
  †Hallopora – tentative report
• †Halogetocrinus – type locality for genus
  • †Halogetocrinus paucus
• †Halysites
• †Hamburgia
  • †Hamburgia typa
• †Harmostocrinus – type locality for genus
  • †Harmostocrinus porosus – type locality for species
• †Harpidella
• †Harpidium
• †Hebertella
• †Hedeina
• †Helenodora – type locality for genus
  • †Helenodora inopinata – type locality for species
• †Helicotoma
  • †Helicotoma planulata
• †Heliolites
• †Heliomeroides
  • †Heliomeroides raymondi
• †Hemeristia – type locality for genus
  • †Hemeristia occidentalis – type locality for species
• †Hemiarges
• †Herdina – type locality for genus
  • †Herdina mirificus – type locality for species
• †Heslerodus
  • †Heslerodus divergens
• †Hesperorthis
• †Heteralosia
  • †Heteralosia beecheri
• †Heterologus – type locality for genus
  • †Heterologus langfordorum – type locality for species
• †Heterotarbus – type locality for genus
  • †Heterotarbus ovatus – type locality for species
• †Hexacrinites
  • †Hexacrinites mississippiensis – type locality for species
• †Holcospermum
• †Holia
  • †Holia magnaspina
• †Holocystites
  • †Holocystites alternatus
  • †Holocystites cylindricus
  • †Holocystites scutellatus – type locality for species
  • †Holocystites spangleri
  • †Holocystites sphaericus
• †Homaloneura
  • †Homaloneura dabasinskasi – type locality for species
• †Homocrinus – tentative report
• †Homoeospira
• †Homotelus
  • †Homotelus laeviurus
• †Howellella
• †Hustedia
  • †Hustedia marmoni
• †Hybochilocrinus
  • †Hybochilocrinus americanus
• †Hymenospora
  • †Hymenospora multirugosa
  • †Hymenospora paucirugosa

Fossilized shells of the Cambrian-Permian brachiopod relative Hyolitha

†Hyolithes

• • †Hyolithes striatus
• †Hypergonia
  • †Hypergonia baldwinensis
  • †Hypergonia illinoiensis – type locality for species
  • †Hypergonia marvinwelleri
• †Hypermegethes – type locality for genus
  • †Hypermegethes schucherti – type locality for species
• †Hypselocrinus
  • †Hypselocrinus maccabei
• †Hystrichopsydrax – type locality for genus
  • †Hystrichopsydrax sandersi – type locality for species
• †Hystriculina
  • †Hystriculina texana

• †Ianthinopsis – tentative report
• †Icthyocrinus
  • †Icthyocrinus subangularis
• †Illaenoides
  • †Illaenoides triloba
• †Ilyodes
  • †Ilyodes divisa – type locality for species
  • †Ilyodes elongata – type locality for species
• †Indospora
  • †Indospora boletus
  • †Indospora stewarti
• †Ischadites
  • †Ischadites koenigi
• †Isoallagecrinus
  • †Isoallagecrinus lasallensis – type locality for species
• 

  Life restoration of the Permian amphibian Isodectes
  †Isodectes
  • †Isodectes obtusus
• †Isorophus – tentative report
• †Isorthis
• †Isotelus
  • †Isotelus gigas
  • †Isotelus maximus

• †Jimpohlia – type locality for genus
  • †Jimpohlia erinacea – type locality for species
• †Juresania
  • †Juresania symmetrica

• †Kanabinocrinus – tentative report
• †Kankakeea – type locality for genus
  • †Kankakeea grundyi – type locality for species
• †Kaskia
  • †Kaskia chesterensis
• †Kewaneesporites
  • †Kewaneesporites reticulatus
  • †Kewaneesporites reticuloides
• 

  Fossilized shells of the Middle Ordovician-Permian nautiloid cephalopod Kionoceras
  †Kionoceras
• †Kitakamithyris
  • †Kitakamithyris cooperensis
• †Kloedenella – tentative report
• †Knorria
  • †Knorria imbricata – or unidentified comparable form
• †Knoxisporites
  • †Knoxisporites rotatus
  • †Knoxisporites stephanephorus
  • †Knoxisporites triradiatus
• †Kosankeisporites
  • †Kosankeisporites elegans
• †Kosovopeltis
• †Kozlowskia
  • †Kozlowskia splendens
• †Kozlowskiella
  • †Kozlowskiella inexpectata – type locality for species
• †Kronoscorpio
  • †Kronoscorpio danielsi – type locality for species
• †Kustarachne – type locality for genus
  • †Kustarachne tenuipes – type locality for species
• †Kutorginella
  • †Kutorginella lasallensis

• †Lacoea
  • †Lacoea seriata
• †Laevigatosporites
  • †Laevigatosporites desmoinensis
  • †Laevigatosporites desmoinesensis
  • †Laevigatosporites globosus
  • †Laevigatosporites medius
  • †Laevigatosporites minutus
  • †Laevigatosporites ovalis
  • †Laevigatosporites punctatus
  • †Laevigatosporites vulgaris
• †Lagenospermum
• †Lameereites – type locality for genus
  • †Lameereites curvipennis – type locality for species
• †Lampterocrinus
  • †Lampterocrinus inflatus
• †Larryia – type locality for genus
  • †Larryia osterbergi – type locality for species
• †Latosporites
  • †Latosporites minutus
• 

  Illustration of a fossil of the Carboniferous centipede Latzelia
  †Latzelia – type locality for genus
  • †Latzelia primordialis – type locality for species
• †Laudonocrinus
  • †Laudonocrinus subsinuatus
• †Leangella
• †Lecanocrinus
• †Lecathylus
  • †Lecathylus gregarious
  • †Lecathylus gregarius
• †Leiotriletes
  • †Leiotriletes adnatoides
  • †Leiotriletes atshanensis – or unidentified comparable form
  • †Leiotriletes gracilis
  • †Leiotriletes levis
  • †Leiotriletes notatus
  • †Leiotriletes parvus
  • †Leiotriletes pseudolevis
• †Lepadocystis
• †Lepetopsis
  • †Lepetopsis chesterensis
• †Lepidocarpon
• †Lepidocyclus
• 

  Restoration of the Carboniferous-Late Triassic club moss relative Lepidodendron. Eli Heimans (1911).
  †Lepidodendron
  • †Lepidodendron aculeatum
  • †Lepidodendron oblongifolium
  • †Lepidodendron veltheimii – or unidentified comparable form
  • †Lepidodendron volkmannianum
  • †Lepidodendron wortheni
• †Lepidophloios
• †Lepidophylloides
• †Lepidophyllum
  • †Lepidophyllum campbelleanum
• †Lepidostrobophyllum
• †Lepidostrobus
• †Leptaena
  • †Leptaena aequalis
  • †Leptaena rhomboidalis
• †Leptagonia
  • †Leptagonia missouriensis – or unidentified comparable form
• †Leptodesma
  • †Leptodesma ehlersi – or unidentified comparable form
  • †Leptodesma laevis
• †Leptoptygma
  • †Leptoptygma fountainensis – type locality for species
  • †Leptoptygma golconda
• †Lesleya
  • †Lesleya cheimarosa – type locality for species
• †Lichas
  • †Lichas pugnax
• 

  Shell of the Cambrian-modern brachiopod Lingula
  †Lingula
  • †Lingula carbonaria
  • †Lingula lamellata
• †Linoproductus
  • †Linoproductus prattenianus
• †Linopteris
  • †Linopteris rubella
• †Liospira – tentative report
• †Liroceras
  • †Liroceras liratum
• †Lissatrypa – tentative report
• †Lissochonetes
  • †Lissochonetes geinitzianus
• †Lissomartus
  • †Lissomartus schucherti – type locality for species
• †Listroncanthus
• †Lithoneura – type locality for genus
  • †Lithoneura clayesi – type locality for species
  • †Lithoneura lameerei – type locality for species
  • †Lithoneura mirifica – type locality for species
  • †Lithoneura piecko – type locality for species
• 

  Shell of a Lithophaga, or date mussel
  Lithophaga – tentative report
  • †Lithophaga subelliptica
• †Litostrobus – or unidentified comparable form
  • †Litostrobus iowensis
• †Lobeatta – type locality for genus
  • †Lobeatta schneideri – type locality for species
• †Lophophyllidium
  • †Lophophyllidium proliferum
• †Lophospira
  • †Lophospira obliqua
  • †Lophospira perangulata
  • †Lophospira serrulata
• †Lophotriletes
  • †Lophotriletes comissuralis
  • †Lophotriletes commissuralis
  • †Lophotriletes copiosus
  • †Lophotriletes gibbosus
  • †Lophotriletes granoornatus – or unidentified comparable form
  • †Lophotriletes ibrahimi
  • †Lophotriletes microsaetosus
  • †Lophotriletes mosaicus
  • †Lophotriletes pseudaculeatus
  • †Lophotriletes rarispinosus
• †Lycodemas – type locality for genus
  • †Lycodemas adolescens – type locality for species
• †Lycospora
  • †Lycospora brevijuga
  • †Lycospora granulata
  • †Lycospora micropapillata
  • †Lycospora noctuina
  • †Lycospora orbicula
  • †Lycospora paulula
  • †Lycospora pellucida
  • †Lycospora punctata
  • †Lycospora pusilla
  • †Lycospora rotunda
  • †Lycospora subjuga
  • †Lycospora torquifer
• †Lyellia
  • †Lyellia thebesensis
• †Lygdozoon
  • †Lygdozoon arkansana
• †Lyriocrinus
  • †Lyriocrinus melissa
• 

  Life restoration of the Permian snake-like amphibian Lysorophus showing speculative egg-coiling behavior
  †Lysorophus – type locality for genus
  • †Lysorophus tricarinatus – type locality for species

• †Macrocrinus
  • †Macrocrinus mundulus
• †Macrostylocrinus
  • †Macrostylocrinus striatus
  • †Macrostylocrinus subglobosus
• †Maculatasporites
  • †Maculatasporites punctatus
• †Mammia – type locality for genus
  • †Mammia alutacea – type locality for species
• †Mariopteris
  • †Mariopteris occidentalis
  • †Mariopteris pygmaea
  • †Mariopteris sillimanni
  • †Mariopteris speciosa
• †Marsupiocrinus
  • †Marsupiocrinus chicagoensis
• †Mazoglossus
  • †Mazoglossus ramsdelli – type locality for species
• †Mazonia – type locality for genus
  • †Mazonia woodiana – type locality for species
• †Mazonopterum – type locality for genus
  • †Mazonopterum wolfforum – type locality for species
• †Mazostachys
  • †Mazostachys pendulata
• †Mazothairos – type locality for genus
  • †Mazothairos enormis – type locality for species
• †Mcluckiepteron – type locality for genus
  • †Mcluckiepteron luciae – type locality for species
• †Meekopora
  • †Meekopora eximia
• †Meekospira
  • †Meekospira bambooformis
  • †Meekospira batteni
  • †Meekospira evansvillensis
  • †Meekospira minuta – type locality for species
• †Megalometer – type locality for genus
  • †Megalometer lata – type locality for species
• †Megastrophia
  • †Megastrophia profunda
• †Megathentomum – type locality for genus
  • †Megathentomum pustulatum – type locality for species
  • †Megathentomum scudderi – type locality for species
• †Megistocrinus
• †Melinophlebia – type locality for genus
  • †Melinophlebia analis – type locality for species
• †Melocrinites
  • †Melocrinites obpyramidalis
• †Merista
• †Meristina
• †Mesoblastus – tentative report
• †Mesolobus
• †Mesoplica
  • †Mesoplica mesicostalis – tentative report
• †Metacheliphlebia
  • †Metacheliphlebia elongata – type locality for species
• †Metachorus
  • †Metachorus testudo – type locality for species
• 

  Fossilized shell of the Carboniferous-Permian nautiloid cephalopod Metacoceras
  †Metacoceras
  • †Metacoceras copei – type locality for species
• †Metaconularia
  • †Metaconularia manni
• †Metatarbus – type locality for genus
  • †Metatarbus triangularis – type locality for species
• †Metopolichas
  • †Metopolichas breviceps
• †Miamia – type locality for genus
  • †Miamia bronsoni – type locality for species
• †Microcaracrinus
  • †Microcaracrinus conjugulus – type locality for species
• †Microreticulatisporites
  • †Microreticulatisporites concavus
  • †Microreticulatisporites harrisonii
  • †Microreticulatisporites lunatus
  • †Microreticulatisporites nobilis
  • †Microreticulatisporites sulcatus
• †Milosaurus – type locality for genus
  • †Milosaurus mccordi – type locality for species
• †Miobatrachus – type locality for genus
  • †Miobatrachus romeri – type locality for species
• †Mischoptera
  • †Mischoptera douglassi – type locality for species
• †Modiolopsis
• †Modiomorpha
  • †Modiomorpha concentrica
• †Modiomorphella
• 

  Fossils of the Early Devonian graptolite Monograptus
  †Monograptus
  • †Monograptus dubius
  • †Monograptus vomerinus
• †Monomuchites
  • †Monomuchites annularis
• †Monopteria
  • †Monopteria longa
• †Mooreisporites
  • †Mooreisporites inusitatus
• †Mooreoceras
• †Moundocrinus
  • †Moundocrinus osagensis – or unidentified comparable form
• †Mourlonia
• †Mulceodens
  • †Mulceodens sibleyense – or unidentified related form
• †Murchisonia
  • †Murchisonia akidota
  • †Murchisonia anderdoniae
  • †Murchisonia sibleyensis
• †Murospora
  • †Murospora kosankei
• †Myelodactylus
• †Mylacris – type locality for genus
  • †Mylacris ampla – type locality for species
  • †Mylacris anthracophila – type locality for species
  • †Mylacris antiqua – type locality for species
  • †Mylacris diplodiscus – type locality for species
  • †Mylacris sellardsi
  • †Mylacris similis – type locality for species
• †Myriotheca
  • †Myriotheca arnoldi – type locality for species
  • †Myriotheca scaberrima
• †Mysticocrinus – report made of unidentified related form or using admittedly obsolete nomenclature
• †Myxinikela – type locality for genus
  • †Myxinikela siroka – type locality for species

• †Nacekomia – type locality for genus
  • †Nacekomia rossae – type locality for species
• †Narkema – type locality for genus
  • †Narkema taeniatum – type locality for species
• †Naticonema
• 

  Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis
  †Naticopsis
  • †Naticopsis carleyana
  • †Naticopsis planifrons
  • †Naticopsis waterlooensis – type locality for species
• †Nectoptilus – type locality for genus
  • †Nectoptilus mazonus – type locality for species
• †Neilsonia
  • †Neilsonia welleri
• †Nemastomoides – type locality for genus
  • †Nemastomoides longipes – type locality for species
• †Nemavermes – type locality for genus
  • †Nemavermes mackeei – type locality for species
• †Neochonetes
  • †Neochonetes granulifer
• †Neofouquea – type locality for genus
  • †Neofouquea suzanneae – type locality for species
• †Neospirifer
  • †Neospirifer dunbari
  • †Neospirifer triplicatus
• 

  Fossilized frond of the Carboniferous seed fern Neuropteris
  †Neuropteris
  • †Neuropteris clarksoni
  • †Neuropteris dussarti
  • †Neuropteris ovata
  • †Neuropteris parvifolia
  • †Neuropteris rarinervis
  • †Neuropteris scheuchzeri
  • †Neuropteris schlehani
  • †Neuropteris tennesseeana
  • †Neuropteris tenuifolia
• †Nigeroplica
  • †Nigeroplica illinoisensis – tentative report
• †Nodonema
  • †Nodonema granulatum
• †Nucleospira
  • †Nucleospira minima
• 

  Interior of a fossilized shell of the Early Ordovician-modern marine bivalve Nucula
  Nucula
• †Nuculoidea – tentative report
• †Nuculopsis
  • †Nuculopsis girtyi
• †Nummicrinus
  • †Nummicrinus waukoma

• †Odontopteris
• †Oligocarpia
• †Oligotypus
  • †Oligotypus makowskii – type locality for species
• †Onychopterella – tentative report
  • †Onychopterella pumilis
• †Ootarbus – type locality for genus
  • †Ootarbus ovatus – type locality for species
  • †Ootarbus pulcher – type locality for species
• †Opiliotarbus
  • †Opiliotarbus elongatus – type locality for species
• †Orbiculoidea
  • †Orbiculoidea missouriensis
• †Orbinaria
  • †Orbinaria brownensis – tentative report
• †Orthomylacris
  • †Orthomylacris contorta – type locality for species
  • †Orthomylacris gurleyi – type locality for species
  • †Orthomylacris mansfieldi
  • †Orthomylacris rigida – type locality for species
• †Orthonychia
  • †Orthonychia chesterense
• †Orthospirifer
  • †Orthospirifer iowensis
• †Orthotarbus
  • †Orthotarbus minutus – type locality for species
  • †Orthotarbus robustus – type locality for species
• †Otarion
• †Ovatia
  • †Ovatia nascens
• †Ovopteris
  • †Ovopteris communis
• †Oxynoblatta
  • †Oxynoblatta triangularis – type locality for species
• †Oxyprora
  • †Oxyprora mesialis – type locality for species
  • †Oxyprora prattenanum – type locality for species

• †Pachystrophia – tentative report
• †Palaeobuthus – type locality for genus
  • †Palaeobuthus distinctus – type locality for species
• †Palaeocarria – type locality for genus
  • †Palaeocarria ornata – type locality for species
• †Palaeodictyopteron – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Palaeodictyopteron latipenne – type locality for species
  • †Palaeodictyopteron mazonum – type locality for species
• †Palaeolima
  • †Palaeolima equistriata
  • †Palaeolima retifer
  • †Palaeolima retifera
• †Palaeoneilo
  • †Palaeoneilo taffiana
• †Palaeopisthacanthus – type locality for genus
  • †Palaeopisthacanthus schucherti – type locality for species
• †Palaeopteridium
  • †Palaeopteridium reussii
• †Palaeostachys
  • †Palaeostachys andrewsii
• †Palaeostylus
• †Palaeozygopleura
  • †Palaeozygopleura venusta
  • †Palaeozygopleura welleri
  • †Palaeozygopleura wortheni – type locality for species
• †Palaiotaptus – type locality for genus
  • †Palaiotaptus mazonus – type locality for species
• †Palenarthrus – type locality for genus
  • †Palenarthrus impressus – type locality for species
• †Paleospora
  • †Paleospora fragila
• †Palmatopteris
• †Parachaetetes
• †Paraconularia
• †Paraisobuthus
  • †Paraisobuthus virginiae – type locality for species
• †Parajuresania
  • †Parajuresania nebrascensis
• †Parallelodon
  • †Parallelodon obsoletus
  • †Parallelodon sangamonensis
• †Parallelora
  • †Parallelora nupera
• †Paralogopsis – type locality for genus
  • †Paralogopsis longipes – type locality for species
• †Paramphicrinus – type locality for genus
  • †Paramphicrinus oklahomaensis – type locality for species
• †Parapaolia
  • †Parapaolia superba – type locality for species
• †Paraparchites
  • †Paraparchites carbonaria
  • †Paraparchites nicklesi
• †Paraphorhynchus
  • †Paraphorhynchus striatocostatum
• †Paratarbus – type locality for genus
  • †Paratarbus carbonarius – type locality for species
• †Pareinoblatta
  • †Pareinoblatta sellardsi – type locality for species
• †Paromylacris
  • †Paromylacris ampla – type locality for species
  • †Paromylacris rotunda – type locality for species
• †Parulocrinus
  • †Parulocrinus pontiacensis – type locality for species
• †Patellilabia
  • †Patellilabia chesterensis
• †Paucicrura
• †Paucijaculum – type locality for genus
  • †Paucijaculum samamithion – type locality for species
• †Paupospira
  • †Paupospira thebesensis – type locality for species
• 

  Fossils of the Late Devonian-Permian fern-like fronds Pecopteris
  †Pecopteris
  • †Pecopteris plumosa
  • †Pecopteris serrulata
  • †Pecopteris vestita
• †Pendulostachys – type locality for genus
  • †Pendulostachys cingulariformis – type locality for species
• †Pentaramicrinus
  • †Pentaramicrinus bimagnaramus
• †Pentremites
  • †Pentremites clavatus
  • †Pentremites godoni
  • †Pentremites obesus
  • †Pentremites okawensis
  • †Pentremites pyriformis
  • †Pentremites springeri
  • †Pentremites tulipaformis
• †Pentremoblastus
• †Pericalyphe – type locality for genus
  • †Pericalyphe longa – type locality for species
• 

  Fossil of the Silurian-Carboniferous crinoid ("sea lily") Periechocrinus
  †Periechocrinus
  • †Periechocrinus chicagoensis
  • †Periechocrinus infelix
  • †Periechocrinus marcouanus
  • †Periechocrinus necis
  • †Periechocrinus urniformis
• †Pernopecten
  • †Pernopecten attenuatus – tentative report
  • †Pernopecten ohioensis
• †Perotriletes
  • †Perotriletes parvigracilus
• †Petrochus
  • †Petrochus conica
  • †Petrochus mellaria – or unidentified comparable form
• 

  Fossil of the Late Ordovician-Late Devonian trilobite Phacops
  †Phacops
  • †Phacops norwoodensis
• †Phanerotrema
• †Pharkidonotus
  • †Pharkidonotus harrodi – type locality for species
  • †Pharkidonotus percarinatus
• †Phascolophyllaphycus
  • †Phascolophyllaphycus lohrensis
• †Phestia
  • †Phestia bellistriatus
• 

  Life restoration of the Carboniferous-Permian amphibian Phlegethontia.
  †Phlegethontia
  • †Phlegethontia longissima – type locality for species
• †Phlyctiscapha
• †Phragmoceras
• †Phragmolites
  • †Phragmolites multinotatus – type locality for species
• †Phyloblatta
  • †Phyloblatta diversipennis – type locality for species
  • †Phyloblatta hilliana – type locality for species
• †Phymatopleura
• †Pilosisporites
  • †Pilosisporites williamsii
• †Pisocrinus
• †Pityosporites
• †Planisporites
  • †Planisporites granifer
• †Platyceras
  • †Platyceras lineata
  • †Platyceras subrotundum
• †Platycrinus
• †Platylichas
• †Platymylacris
  • †Platymylacris paucinervis – type locality for species
• 

  Life restoration of the Carboniferous-Permian bony fish Platysomus
  †Platysomus
  • †Platysomus circularis
• †Platystrophia
  • †Platystrophia biforata
• †Platyzona
• †Plectatrypa
• †Pleophrynus – type locality for genus
  • †Pleophrynus ensifer – type locality for species
• †Pleurojulus
  • †Pleurojulus biornatus – or unidentified comparable form
• †Plicochonetes
  • †Plicochonetes glenparkensis – tentative report
• †Plummericrinus
  • †Plummericrinus erectus
• †Pohlispongia – type locality for genus
  • †Pohlispongia monosphaera – type locality for species
• †Pojetaconcha
  • †Pojetaconcha limatula
• †Poliochera – type locality for genus
  • †Poliochera gibbsi – type locality for species
  • †Poliochera glabra – type locality for species
  • †Poliochera punctulata – type locality for species
• †Polusocrinus
  • †Polusocrinus avanti
• †Polyernus – type locality for genus
  • †Polyernus complanatus – type locality for species
• †Polyetes – type locality for genus
  • †Polyetes furcifer – type locality for species
• †Polygonocrinus
  • †Polygonocrinus spiniferus – type locality for species
• 

  Life restoration of the Carboniferous Chimaera relative Polysentor
  †Polysentor – type locality for genus
  • †Polysentor gorbairdi – type locality for species
• †Porcellia
  • †Porcellia chesterensis
• †Poteriocrinus – tentative report
• †Potonieisporites
  • †Potonieisporites elegans
• †Priapulites – type locality for genus
  • †Priapulites konecniorum – type locality for species
• †Probletocrinus – type locality for genus
  • †Probletocrinus curtus – type locality for species
• †Prochoroptera – type locality for genus
  • †Prochoroptera calopteryx – type locality for species
• †Procoronaspora
  • †Procoronaspora dumosa
• †Prodentalium
• †Productella
  • †Productella subalata
• 

  Restoration of the Silurian trilobite Proetus
  †Proetus
  • †Proetus canalis
  • †Proetus determinatus
  • †Proetus handwerki
• †Progenentomum – type locality for genus
  • †Progenentomum carbonis – type locality for species
• †Promexyele
  • †Promexyele peyeri
• †Promylacris
  • †Promylacris ovalis – type locality for species
• †Promytilus – tentative report
  • †Promytilus annosus
• †Protatrypa
• †Protoblattoidea – report made of unidentified related form or using admittedly obsolete nomenclature
  • †Protoblattoidea minor
  • †Protoblattoidea sellardsi
• †Protodictyon – type locality for genus
  • †Protodictyon pulchripenne – type locality for species
• †Protoleptostrophia
• †Protomegastrophia
• 

  Life restoration of the Carboniferous insects Protophasma and Titanophasma
  †Protophasma
  • †Protophasma galtieri – type locality for species
• †Protopilio
  • †Protopilio depressus – type locality for species
• †Protoscolex
  • †Protoscolex ruedemanni
• †Protosolpuga – type locality for genus
  • †Protosolpuga carbonaria – type locality for species
• †Pseudaviculopecten
  • †Pseudaviculopecten princeps
• †Pseudoatrypa
  • †Pseudoatrypa devoniana
• †Pseudogerarus – type locality for genus
  • †Pseudogerarus scudderi – type locality for species
• †Pseudomonotis
  • †Pseudomonotis equistriata
• 

  Fossilized skeleton of the Carboniferous snake-like amphibian Pseudophlegethontia
  †Pseudophlegethontia – type locality for genus
  • †Pseudophlegethontia turnbullorum – type locality for species
• †Pseudorthoceras
  • †Pseudorthoceras knoxense
• †Pseudosphonophyton
  • †Pseudosphonophyton höegii – type locality for species
• †Pseudozygopleura
  • †Pseudozygopleura yandellana – or unidentified comparable form
• †Pterinea
  • †Pterinea thebesensis
• †Pterochiton
  • †Pterochiton carbonarius – type locality for species
• †Pteronites
• †Pterotheca
  • †Pterotheca triangularis – type locality for species
• †Pterotocrinus
  • †Pterotocrinus abruptus
  • †Pterotocrinus armatus
  • †Pterotocrinus capitalis
  • †Pterotocrinus coronarius
  • †Pterotocrinus lingulaformis
  • †Pterotocrinus rugosus
• †Ptychocarpus
• †Pulchratia – tentative report
  • †Pulchratia symmetrica
• †Punctatisporites
  • †Punctatisporites aerarius
  • †Punctatisporites curviradiatus
  • †Punctatisporites decorus
  • †Punctatisporites edgarensis
  • †Punctatisporites flavus
  • †Punctatisporites glaber
  • †Punctatisporites gracilirugosus – or unidentified comparable form
  • †Punctatisporites irrasus
  • †Punctatisporites kankakeensis
  • †Punctatisporites minutus
  • †Punctatisporites nahannensis
  • †Punctatisporites obesus
  • †Punctatisporites obliquus
  • †Punctatisporites orbicularis
  • †Punctatisporites pseudolevatus – or unidentified comparable form
  • †Punctatisporites vermiculatus
• †Punctatosporites
  • †Punctatosporites minutus
• †Punctospirifer
  • †Punctospirifer kentuckensis
  • †Punctospirifer transversus
• †Pustulatisporites
  • †Pustulatisporites crenatus
• †Pustulatisporties
  • †Pustulatisporties crenatus
• †Pycnosaccus
• †Pyrgocystis

• †Quadrochonetes
  • †Quadrochonetes geronticus
• †Quasillinites
  • †Quasillinites diversiformis

• †Radiizonates
  • †Radiizonates striatus
• †Rafinesquina
  • †Rafinesquina mesicosta
• †Raistrickia
  • †Raistrickia abdita
  • †Raistrickia aculeata
  • †Raistrickia aculeolata
  • †Raistrickia breveminens
  • †Raistrickia brevemines
  • †Raistrickia carbondalensis
  • †Raistrickia crinita
  • †Raistrickia crocea
  • †Raistrickia dispar
  • †Raistrickia fibrata – or unidentified comparable form
  • †Raistrickia grovensis
  • †Raistrickia irregularis
  • †Raistrickia lacerata
  • †Raistrickia lowellensis
  • †Raistrickia pilosa
  • †Raistrickia pontiacensis
  • †Raistrickia prisca
  • †Raistrickia solaria
  • †Raistrickia subcrinita
  • †Raistrickia superba
• †Rasstriga – type locality for genus
  • †Rasstriga americana – type locality for species
• †Redstockia
• †Reinschospora
  • †Reinschospora magnifica
  • †Reinschospora triangularis
• †Remopleurides
  • †Remopleurides missouriensis
• †Renaultia
• †Renisporites
  • †Renisporites confossus
• †Resserella
• †Reticulariiina
  • †Reticulariiina spinosa
• †Reticulariina
  • †Reticulariina spinosa
• †Reticulatia
  • †Reticulatia huecoensis
• †Reticulatisporites
  • †Reticulatisporites lacunosus
  • †Reticulatisporites muricatus
  • †Reticulatisporites polygonalis
  • †Reticulatisporites reticulatus
  • †Reticulatisporites splendens
• †Reticulograptus
  • †Reticulograptus polymorphus
• †Retispira
  • †Retispira monronensis – type locality for species
  • †Retispira nodocostata – type locality for species
  • †Retispira ornatus – type locality for species
• †Rhabdoxylon
  • †Rhabdoxylon americanum – type locality for species
• †Rhineoderma
  • †Rhineoderma piasaensis – type locality for species
• †Rhipidium
• †Rhipidomella
  • †Rhipidomella carbonaria
  • †Rhipidomella rockportensis
• †Rhodea
  • †Rhodea trichomanoides – or unidentified comparable form
• †Rhodeopteridium
  • †Rhodeopteridium phillipsii – type locality for species
• †Rhombopora
• †Rhynchogonium
  • †Rhynchogonium fayettevillense
• 

  Fossilized shell of the Silurian-Eocene articulate brachiopod Rhynchonella
  †Rhynchonella
• †Rhynchopora
  • †Rhynchopora hamburgensis
  • †Rhynchopora prisca
  • †Rhynchopora pustulosa
• †Rhynchotreta
• †Rugosochonetes
  • †Rugosochonetes gregarius – or unidentified comparable form
  • †Rugosochonetes pikensis
• †Ruthiphiala
  • †Ruthiphiala sublaevis

• †Saccoglossus
  • †Saccoglossus testa – type locality for species
• †Saetograptus
  • †Saetograptus colonus
• †Sagenodus
  • †Sagenodus cristatus – type locality for species
• †Sagittoceras
  • †Sagittoceras hathawayanum – type locality for species
• †Salterospira
  • †Salterospira chesterensis
  • †Salterospira okawensis
• †Salvadorea
  • †Salvadorea randi
• †Samaropsis
• †Savagella
  • †Savagella illinoisensis
  • †Savagella lindahli
• †Savitrisporites
  • †Savitrisporites asperatus
  • †Savitrisporites majus
  • †Savitrisporites nux
• †Scepasma – type locality for genus
  • †Scepasma gigas – type locality for species
• †Sceptropora
  • †Sceptropora facula
• †Schizodus
• †Schizophoria
  • †Schizophoria hortonensis
  • †Schizophoria iowensis
• †Schizotreta
  • †Schizotreta tenuilamellata
• †Schondorfia – type locality for genus
  • †Schondorfia fungosa – type locality for species
• †Schopfites
  • †Schopfites carbondalensis
  • †Schopfites colchesterensis
  • †Schopfites dimorphus
• †Schuchertella
  • †Schuchertella hardinensis
  • †Schuchertella louisianaensis
  • †Schuchertella propinqua
• †Schuchertiella – type locality for genus
  • †Schuchertiella gracilis – type locality for species
• †Schulzospora
  • †Schulzospora rara
• †Sciadiocrinus
  • †Sciadiocrinus tegillum – type locality for species
• †Scolecopteris – tentative report
• †Sedenticellula
  • †Sedenticellula hamburgensis
• †Selenella
  • †Selenella pediculus
• †Semiproductus
• †Senftenbergia
• †Sentosia
  • †Sentosia ignota – tentative report
• †Septameroceras
• †Serpulopsis
• †Serpulospira
  • †Serpulospira diversiformis
• †Shansiella
  • †Shansiella broadheadi – tentative report
• †Shumardella
  • †Shumardella fracta
• †Sievertsia
• 

  Fossilized stump of the Carboniferous-Permian club moss relative Sigillaria
  †Sigillaria
  • †Sigillaria mamillaris – or unidentified comparable form
  • †Sigillaria rugosa
• †Sigillariostrobus
• †Silphion – type locality for genus
  • †Silphion latipenne – type locality for species
• †Similihariotta – type locality for genus
  • †Similihariotta dabasinskasi – type locality for species
• † Simplicius
  • †Simplicius simplex – type locality for species
• †Sinuspores
  • †Sinuspores sinuatus
• †Siphonocrinus
  • †Siphonocrinus nobilis
• †Skenidioides
• 

  Modern specimen of the marine bivalve Solemya
  Solemya
  • †Solemya trapezoides
• †Soleniscus
  • †Soleniscus primogenius
• †Solenochilus
  • †Solenochilus shumwayense – type locality for species
• †Sorellophrynus – type locality for genus
  • †Sorellophrynus carbonarius – type locality for species
• †Spackmanites
  • †Spackmanites facierugosus – or unidentified comparable form
  • †Spackmanites habibii
• †Sphaerexochus
  • †Sphaerexochus roemingeri
  • †Sphaerexochus romingeri
• †Sphaerocoryphe
  • †Sphaerocoryphe arachniformis
• 

  Fossilized leaves and branches of the Devonian-Triassic horsetail relative Sphenophyllum
  †Sphenophyllum
  • †Sphenophyllum cuneifolium
  • †Sphenophyllum emarginatum
  • †Sphenophyllum longifolium – or unidentified comparable form
• †Sphenopteris
  • †Sphenopteris distans
  • †Sphenopteris preslesensis
• †Sphenosphaera
  • †Sphenosphaera consimilis – type locality for species
• †Spilaptera
  • †Spilaptera americana – type locality for species
• †Spilomastax – type locality for genus
  • †Spilomastax oligoneurus – type locality for species
• †Spinatrypa
  • †Spinatrypa bellula
  • †Spinatrypa occidentalis
• †Spinosporites
  • †Spinosporites exiguus
• †Spinyplatyceras
  • †Spinyplatyceras fornicatum
• †Spondylerpeton – type locality for genus
  • †Spondylerpeton spinatum – type locality for species
• †Srokalarva – type locality for genus
  • 

    Srokalarva berthei part and counterpart
    †Srokalarva berthei – type locality for species
• †Staurocephalus
  • †Staurocephalus obsoleta
• †Stearoceras
  • †Stearoceras involutum – type locality for species
• †Stegerhynchus
  • †Stegerhynchus antiqua
  • †Stegerhynchus concinna
• †Stegocoelia
  • †Stegocoelia okawensis
• †Stellarocrinus
  • †Stellarocrinus bilineatus – type locality for species
  • †Stellarocrinus virgilensis – or unidentified comparable form
• †Stellatheca
  • †Stellatheca latiloba
  • †Stellatheca ornata
• †Stenopareia
• †Stenopecrinus
  • †Stenopecrinus planus – or unidentified comparable form
• †Stenoscisma
  • †Stenoscisma explanatum
• †Stephanopsis – type locality for genus
  • †Stephanopsis mirandus – type locality for species
• †Stephanozyga
• 

  Life restorations of a male (foreground) and female (background) of the Late Devonian-Carboniferous Chimaera relative Stethacanthus
  †Stethacanthus
  • †Stethacanthus altonensis
• †Stictopora
• †Stigmaria
  • †Stigmaria ficoides
  • †Stigmaria stellata
  • †Stigmaria wedingtonensis
• †Straparollus
  • †Straparollus subquadratus
• †Streblochondria
• †Striispirifer
• †Strobeus
  • †Strobeus brevis
  • †Strobeus paludinaeformis
• †Strophomena
• †Strophostylus
  • †Strophostylus wortheni – type locality for species
• †Styptobasis
  • †Styptobasis aculeata – type locality for species
• †Subglobosochonetes
  • †Subglobosochonetes jerseyensis
• 

  Fossil of the Carboniferous Chimaera relative Symmorium
  †Symmorium – type locality for genus
  • †Symmorium reniforme – type locality for species
• †Syntonoptera – type locality for genus
  • †Syntonoptera schucherti – type locality for species
• †Sypharoptera – type locality for genus
  • †Sypharoptera pneuma – type locality for species
• †Syringopora
• †Syringothyris
  • †Syringothyris extenuata
  • †Syringothyris hannibalensis

• †Tainoceras
  • †Tainoceras monilifer
  • †Tainoceras sexlineatum – type locality for species
• †Telangiopsis
• †Telangium
• †Telmatoscorpio – type locality for genus
  • †Telmatoscorpio brevipectus – type locality for species
• 

  Fossilized shell of the Early Ordovician-Late Devonian probable mollusc Tentaculites
  †Tentaculites
  • †Tentaculites bellulus
• †Terpnocrinus – type locality for genus
  • †Terpnocrinus ocoyaensis – type locality for species
• †Testajapyx – type locality for genus
  • †Testajapyx thomasi – type locality for species
• †Thalamocrinus
• †Thaleops
  • †Thaleops depressicapitata
• †Thallites
  • †Thallites dichopleurus
• †Thebanaspis
  • †Thebanaspis channahonensis
• †Thebesia
  • †Thebesia thebesensis
• †Thelyphrynus – type locality for genus
  • †Thelyphrynus elongatus – type locality for species
• †Thesoneura – type locality for genus
  • †Thesoneura americana – type locality for species
• †Thigriffides
  • †Thigriffides roundyi
• †Tholocrinus
  • †Tholocrinus discus – type locality for species
  • †Tholocrinus unionensis – type locality for species
• †Thuroholia
  • †Thuroholia cribriformis – type locality for species
  • †Thuroholia croneisi – type locality for species
• †Thyloblatta
• †Thymospora
  • †Thymospora pseudothiessenii
• †Titanoscorpio – type locality for genus
  • †Titanoscorpio douglassi – type locality for species
• †Torispora
  • †Torispora securis
• †Torynifer
  • †Torynifer setiger
• †Tranodis
  • †Tranodis castrensis
• †Tremanotus
• †Trepospira
  • †Trepospira depressa
• †Triamara
  • †Triamara tumida
  • †Triamara ventricosa
• †Trigera – tentative report
• †Trigonocarpus
• †Trigonoglossa – tentative report
  • †Trigonoglossa nebrascensis
• †Trigonotarbus
  • †Trigonotarbus carbonarius – type locality for species
• †Trihyphaecites
  • †Trihyphaecites triangulatus
• †Triquitrites
  • †Triquitrites additus
  • †Triquitrites arculatus – or unidentified comparable form
  • †Triquitrites bransonii
  • †Triquitrites crassus
  • †Triquitrites desperatus
  • †Triquitrites dividuus
  • †Triquitrites exiguus
  • †Triquitrites minutus
  • †Triquitrites protensus
  • †Triquitrites pulvinatus
  • †Triquitrites sculptilis
  • †Triquitrites spinosus
  • †Triquitrites subspinosus
  • †Triquitrites trigonappendix
  • †Triquitrites truncatus
• †Triticites
  • †Triticites pauper
  • †Triticites turgidus
• †Trochonema
  • †Trochonema umbilicata – or unidentified comparable form
• †Trochurus
  • †Trochurus welleri
• †Tropidodiscus
  • †Tropidodiscus compticarinatus
• †Tuberculatosporites
  • †Tuberculatosporites robustus
• 

  Restoration of the mysterious Carboniferous life-form Tullimonstrum, or the Tully monster
  †Tullimonstrum – type locality for genus
  • †Tullimonstrum gregarius – type locality for species
• †Turnbullia – type locality for genus
  • †Turnbullia priscillae – type locality for species
• †Tylothyris
  • †Tylothyris missouriensis

• †Ulocrinus
  • †Ulocrinus convexus
  • †Ulocrinus sangamonensis
• †Undulabucania
  • †Undulabucania punctifrons
• †Unispirifer
  • †Unispirifer senex

• †Vallatisporites
• †Valmeyeraphycus
  • †Valmeyeraphycus jerseyensis
• †Valmeyerodendron
  • †Valmeyerodendron triangularifolium
• †Verrucosisporites
  • †Verrucosisporites compactus
  • †Verrucosisporites donarii
  • †Verrucosisporites firmus
  • †Verrucosisporites microtuberosus
  • †Verrucosisporites papulosus
  • †Verrucosisporites sifati
  • †Verrucosisporites verrucosus
  • †Verrucosisporites verus – or unidentified comparable form
• †Vesicaspora
  • †Vesicaspora wilsonii
• †Vestispora
  • †Vestispora colchesterensis
  • †Vestispora costata
  • †Vestispora fenestrata
  • †Vestispora foveata
  • †Vestispora irregularis
  • †Vestispora laevigata
  • †Vestispora profunda
  • †Vestispora pseudoreticulata
  • †Vestispora wanlessii
• †Volsellina
  • †Volsellina subelliptica

• †Waeringoscorpio – type locality for genus
  • †Waeringoscorpio alliedensis – type locality for species
• †Wellerella
  • †Wellerella osagensis
  • †Wellerella tetrahedra
• †Welleriella – tentative report
• †Whidbornella
  • †Whidbornella curtirostris
• †Whitella
  • †Whitella sterlingensis
• †Whitfieldella
  • †Whitfieldella billingsana
• †Whittleseya
• †Wilkingia
  • †Wilkingia costatum
• †Wilsonites
  • †Wilsonites circularis
  • †Wilsonites delicatus
  • †Wilsonites vesicatus
• †Worthenia
  • †Worthenia tabulata

• 

  Illustration of a fossil of the Carboniferous millipede Xyloiulus
  †Xyloiulus
  • †Xyloiulus frustulentus – type locality for species
  • †Xyloiulus mazonus – type locality for species

• †Yochelsonospira – type locality for genus
  • †Yochelsonospira tenuilineata – type locality for species
• Yoldia

• †Zangerlispongia – type locality for genus
  • †Zangerlispongia richardsoni – type locality for species
• †Zaphrenthis
  • †Zaphrenthis stokesi
• †Zeilleria
• †Zeugopleura
  • †Zeugopleura jeffersonensis
• †Zophocrinus – tentative report
• †Zosterogrammus – type locality for genus
  • †Zosterogrammus stichostethus – type locality for species

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 7 August 2017.