List of the Paleozoic life of Pennsylvania

This list of the Paleozoic life of Pennsylvania contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Pennsylvania and are between 541 and 252.17 million years of age.

A
  • †Acanthopecten
    • †Acanthopecten carboniferous
  • †Acidaspis
    • †Acidaspis cincinnatiensis
  • †Acrothele
    • †Acrothele decipiens
    • †Acrothele yorkensis
  • †Acrotreta
  • †Actinomylacris
    • †Actinomylacris similis – type locality for species
  • †Actinopteria
    • †Actinopteria boydi
    • †Actinopteria boydii
    • †Actinopteria decussata
  • †Adelphobolbina
    • †Adelphobolbina medialis
  • †Adiantites
    • †Adiantites mirabilis
    • †Adiantites spectabilis – type locality for species
    • †Adiantites ungeri – type locality for species
  • †Adiatites
    • †Adiatites cyclopteroides – type locality for species
    • †Adiatites spectabilis – type locality for species
  • †Aechmina
  • †Agassizocrinus
  • †Ageleodus
    • †Ageleodus pectinatus
  • †Aglaoglypta
    • †Aglaoglypta maera
    • †Aglaoglypta nactoides
  • †Agnostus
  • †Alcicornopteris
    • †Alcicornopteris altoonensis – type locality for species
    • †Alcicornopteris anthracitica – type locality for species
  • Fossilized fronds of the Carboniferous-Early Cretaceous seed fern Alethopteris
    †Alethopteris
    • †Alethopteris densinervosa
    • †Alethopteris ingbertensis
    • †Alethopteris lonchitifolia
    • †Alethopteris missouriensis
    • †Alethopteris serli
    • †Alethopteris westphalensis
  • †Allanella
    • †Allanella tullius
  • †Alokistocare
    • †Alokistocare aoris – type locality for species
    • †Alokistocare nasutum – type locality for species
  • †Ambocoelia
    • †Ambocoelia gregaria
    • †Ambocoelia umbonata
  • †Amboneura – type locality for genus
    • †Amboneura klosei – type locality for species
  • †Americaspis
  • †Amphiscapha
    • †Amphiscapha catilloides
  • †Amphissites
  • †Anastomopora
  • †Ancyrospora
  • †Aneurospora
    • †Aneurospora greggsii
  • †Anisotrypa
  • †Ankoura
    • †Ankoura apicalis
    • †Ankoura orbiculata – or unidentified comparable form
    • †Ankoura sublettensis
  • Restorative model of the Cambrian arthropod Anomalocaris
    †Anomalocaris
    • †Anomalocaris lineata
  • †Anomomylacris – type locality for genus
    • †Anomomylacris cubitalis – type locality for species
  • †Anoplea
    • †Anoplea nucleata
  • †Anoplotheca
  • †Anthracospirifer
  • †Aparchites
    • †Aparchites subrotunda
  • †Aphthoroblattina
    • †Aphthoroblattina fascigera – type locality for species
  • †Aphyllum
    • †Aphyllum fascicularium
  • †Archaeopteridium
    • †Archaeopteridium bellasylviana – type locality for species
  • †Archaeopteris
  • †Archaeosperma
    • †Archaeosperma arnoldii
  • †Archaeotriletes
    • †Archaeotriletes senticosus
  • †Archeopteris
    • †Archeopteris latifolia
  • †Archimylacris
    • †Archimylacris parallelum
  • †Archinacella
  • †Armathyraster
    • †Armathyraster paradoxis
  • †Arthrophycus
  • †Articulatae
  • Fossil of the Cambrian trilobite Asaphiscus
    †Asaphiscus
    • †Asaphiscus glaber
  • †Asemoblatta – type locality for genus
    • †Asemoblatta pennsylvanica – type locality for species
  • †Astartella
    • †Astartella vera
  • †Atalotaenia – type locality for genus
    • †Atalotaenia adela – type locality for species
  • †Ateleocystites
    • †Ateleocystites huxleyi
  • †Athyris
  • †Atimoblatta – type locality for genus
    • †Atimoblatta curvipennis – type locality for species
    • †Atimoblatta flexuosa – type locality for species
    • †Atimoblatta reducta – type locality for species
  • †Atlanticocoelia
    • †Atlanticocoelia acutiplicata
  • †Atrypa
  • †Aulocystis
  • †Auroraspora
    • †Auroraspora hyalina
    • †Auroraspora macra
    • †Auroraspora solisorta
    • †Auroraspora torquata
  • †Aviculopecten

B
  • †Bactrites
  • †Barbclabornia
    • †Barbclabornia luedersensis
  • †Barinophyton
    • †Barinophyton citrulliforme
    • †Barinophyton obscurum
  • †Bathyuriscus
  • †Batostoma
  • Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon
    †Bellerophon
    • †Bellerophon clarki
    • †Bellerophon nactus
  • †Bembexia
    • †Bembexia laevis
  • Berenicea
  • †Beyrichoceratoides
    • †Beyrichoceratoides lunatus
  • †Bisporangiostrobus
    • †Bisporangiostrobus harrisii
  • †Blainia
    • †Blainia buttsi – type locality for species
  • †Blairella
    • †Blairella triangularis – type locality for species
  • †Blattoidea
    • †Blattoidea schucherti – type locality for species
  • †Blountia
    • †Blountia prolifica – type locality for species
    • †Blountia waddlensis
    • †Blountia warriorensis – type locality for species
  • †Bollia
    • †Bollia hama
    • †Bollia hindei
    • †Bollia planofibra
    • †Bollia spinomuralis
    • †Bollia ungula
  • †Bolllia
    • †Bolllia ungula
  • †Bonneterrina
    • †Bonneterrina aspinosa – type locality for species
  • †Bonnia
    • †Bonnia bubaris
    • †Bonnia capito
    • †Bonnia senecta – tentative report
  • †Bonniella
    • †Bonniella yorkensis
  • Fossilized bony armor of the Late Devonian placoderm fish Bothriolepis
    Life restoration of the Late Devonian placoderm fish Bothriolepis
    †Bothriolepis
    • †Bothriolepis nitida
    • †Bothriolepis nitidus
  • †Brachycycloceras
    • †Brachycycloceras curtum
  • †Brachymylacris
    • †Brachymylacris bassleri – type locality for species
    • †Brachymylacris elongata – type locality for species
    • †Brachymylacris rotundata – type locality for species
  • †Bucanopsis
  • †Bufina
    • †Bufina bicornuta
  • †Burnetiella
    • †Burnetiella ectypa
    • †Burnetiella urania
  • †Buttisia
    • †Buttisia drabensis
  • †Buttsia
    • †Buttsia completa
    • †Buttsia drabensis
  • †Bynumia
    • †Bynumia terrenda
  • †Bynumina
    • †Bynumina terrenda
    • †Bynumina type locality for species – informal
  • †Bynuminia
    • †Bynuminia terrenda
  • †Byronia
  • †Byssonychia – tentative report
    • †Byssonychia vera – or unidentified comparable form
  • Bythocypris

C
  • †Calathiops
    • †Calathiops pottsvillensis – type locality for species
  • †Calathospongia
    • †Calathospongia carceralis
    • †Calathospongia carlli
    • †Calathospongia tidioutensis
  • †Callixylon
  • †Caloneurella – type locality for genus
    • †Caloneurella carbonaria – type locality for species
  • †Calvibembexia
    • †Calvibembexia sulcomarginata
  • †Camaraspis
    • †Camaraspis convexa
  • †Camarotoechia
    • †Camarotoechia constricta
    • †Camarotoechia prolifica
    • †Camarotoechia saxatilis
  • †Camerella
  • Life restoration of the Cambrian echinoderm Camptostroma
    †Camptostroma
    • †Camptostroma roddyi
  • †Cardiocarpon
    • †Cardiocarpon phillipsi – type locality for species
  • †Cariniferella
    • †Cariniferella carinata
    • †Cariniferella tioga
  • †Carydium
    • †Carydium bellastriatum
  • †Cavellina
    • †Cavellina planoprocliva
  • †Cavusgnathus
  • †Centronella
  • †Ceramopora
    • †Ceramopora incondita
  • †Ceratopsis
    • †Ceratopsis chambersi
  • †Ceriocrinus
  • †Chalepomylacris – type locality for genus
    • †Chalepomylacris pulchra – type locality for species
  • †Chancelloria
    • †Chancelloria yorkensis
  • †Chancia
  • †Cheilocephalus
    • †Cheilocephalus quadratus – type locality for species
  • †Chonetes
    • †Chonetes buttsi
    • †Chonetes hemisphericus
  • †Chonetinella
    • †Chonetinella verneuilana
  • †Cincinnaticrinus
  • Assemblage of fossilized shells of the Ordovician brachiopod Cincinnetina
    †Cincinnetina
  • †Cladopora
    • †Cladopora seriata
  • †Cleiothyridina
  • †Cliffia
    • †Cliffia lataegenae
    • †Cliffia latagenae
  • †Climacograptus
    • †Climacograptus typicalis
  • †Cobaloblatta – type locality for genus
    • †Cobaloblatta simulans – type locality for species
  • Coccosteus cuspidatus restoration, shown attacking multiple Palaeospondylus'
    †Coccosteus
    • †Coccosteus macromus – type locality for species
  • †Coelacanthus
  • †Coleolus
  • †Colpodexylon
    • †Colpodexylon deatsii
  • †Colpomya
    • †Colpomya faba
  • †Comanchia
    • †Comanchia amplooculata
  • †Composita
  • †Conaspis
  • †Conotheca
    • †Conotheca australiensis – or unidentified comparable form
  • †Conularia
    • †Conularia trentonensis – tentative report
  • †Convolutispora
    • †Convolutispora opressa – or unidentified comparable form
  • †Coosella
    • †Coosella convexa – type locality for species
    • †Coosella vulgaris – type locality for species
  • †Coosia
    • †Coosia pustulata – type locality for species
  • †Corbulispora
    • †Corbulispora cancellata
  • Fossilized foliage of the Carboniferous-Permian conifer relative Cordaites
    †Cordaites
  • †Cornellites
    • †Cornellites flabella
  • †Cornulites
  • †Corticospongia – type locality for genus
    • †Corticospongia bradfordensis – type locality for species
  • †Cranaena
  • †Craniops
    • †Craniops hamiltoniae
    • †Craniops subtruncata
  • †Crenistriella
    • †Crenistriella crenistria
  • †Crepicephalus
  • †Crurithyris
    • †Crurithyris planoconvexa
  • †Cryptolithus
    • †Cryptolithus bellulus
    • †Cryptolithus recurvus
  • †Cryptozoon
    • †Cryptozoon undulatum
  • †Ctenerpeton – type locality for genus
    • †Ctenerpeton remex – type locality for species
  • †Ctenoloculina
    • †Ctenoloculina cicatricosa
  • Fossils and life restoration of the Silurian eurypterid ("sea scorpion") Ctenopterus
    †Ctenopterus
    • †Ctenopterus cestrotus
  • †Cuneamya
  • †Cupularostrum
    • †Cupularostrum congregata
    • †Cupularostrum contracta
    • †Cupularostrum exima
    • †Cupularostrum orbicularis
  • †Cyclonema
  • †Cyclopteris
  • †Cymatospira
    • †Cymatospira montfortianus
  • †Cypricardella
    • †Cypricardella bellastriata
    • †Cypricardella bellistriata
    • †Cypricardella tenuistriata
  • †Cypricardina
    • †Cypricardina indenta
  • †Cypricardinia
  • †Cyrtina
    • †Cyrtina hamiltonensis
  • Fossilized shells of the Middle-Late Devonian brachiopod Cyrtospirifer
    †Cyrtospirifer
    • †Cyrtospirifer disjunctus
  • †Cyrtospora
    • †Cyrtospora cristifera – or unidentified comparable form
  • †Cystihalysites

D
  • †Dawsonia
    • †Dawsonia parkeri
  • †Deadwoodia
    • †Deadwoodia duris
  • †Dechenella
  • †Deckera
    • †Deckera completa
  • †Dekayella
  • †Dellea
    • †Dellea glabellamersa
    • †Dellea rogersi – type locality for species
    • †Dellea saratogensis
  • †Delthyris
  • †Deltodus
    • †Deltodus angularis
  • †Densignathus – type locality for genus
    • †Densignathus rowei – type locality for species
  • †Derbyia
    • †Derbyia crassa
    • †Derbyia robusta
  • †Devonochonetes
    • †Devonochonetes coronatus
    • †Devonochonetes scitulus
    • †Devonochonetes syrtalis
  • †Diacanthaspis
  • †Diaphanospora
  • †Diaphragmus
  • †Dictyomylacris
  • †Dictyotomaria
    • †Dictyotomaria capillaria
  • †Dictyotriletes
    • †Dictyotriletes nefandus
  • †Dieconeurites – type locality for genus
    • †Dieconeurites rigidus – type locality for species
  • †Diplocaulus – or unidentified comparable form
  • Life restoration of the Permian amphibian Diploceraspis
    †Diploceraspis
  • †Diplograptus
    • †Diplograptus nexus
  • †Ditomopyge
    • †Ditomopyge scitulus
  • †Dizygopleura
  • †Dodecaactinella
    • †Dodecaactinella spicules
  • †Dokimocephalus – tentative report
    • †Dokimocephalus intermedius
  • †Douvillina
    • †Douvillina cayuta
    • †Douvillina inaequistriata
  • †Drabia
    • †Drabia acroccipita
    • †Drabia acrocclpita
    • †Drabia acrocclptia
    • †Drabia menusa
    • †Drabia typica
  • †Dunbarella
    • †Dunbarella striata

E
  • †Echinoconchus
    • †Echinoconchus punctatus
  • †Ectenocrinus
    • †Ectenocrinus simplex
  • Life restoration of the Permian synapsid (mammal precursor) Edaphosaurus
    †Edaphosaurus
    • †Edaphosaurus raymondi – type locality for species
  • †Edmondia
  • †Eldredgeops
  • †Elita
    • †Elita fimbriata
  • †Elrathia
    • †Elrathia grazierensis – type locality for species
  • †Elrathina
  • †Elvinia
    • †Elvinia roemeri
  • †Embolophyllum
    • †Embolophyllum clarki
    • †Embolophyllum coralliferum
    • †Embolophyllum schucherti
  • †Emmanuella
    • †Emmanuella subumbona
  • †Emphanisporites
    • †Emphanisporites annulatus – or unidentified comparable form
    • †Emphanisporites pantagiatus – or unidentified comparable form
    • †Emphanisporites rotatus
  • †Endolobus
  • †Endothyra
  • †Endothyranella
    • †Endothyranella nitida – or unidentified comparable form
    • †Endothyranella stormi – or unidentified comparable form
  • †Entellophylloides
    • †Entellophylloides inequalils
  • †Eoagnostus
    • †Eoagnostus roddyi
  • †Eoobolus
    • †Eoobolus priscus
  • †Eoorthis
    • †Eoorthis indianola
  • †Eoserpeton
    • †Eoserpeton tenuicorne – type locality for species
  • †Eothele
    • †Eothele tubulus
  • Life restoration of the Silurian-Early Devonian eurypterid ("sea scorpion") Erettopterus
    †Erettopterus
    • †Erettopterus globiceps
  • †Eryops
    • †Eryops avinoffi
  • †Eshelmania
  • †Esmeraldina
    • †Esmeraldina macer
  • †Euglyphella
    • †Euglyphella numismoides
  • †Eukloedenella
  • †Eumetria
  • †Euomphalus
  • †Eupachycrinus
  • †Euphemites
    • †Euphemites carbonarius

F
  • †Fabreciella – type locality for genus
    • †Fabreciella pennsylvanica – type locality for species
  • Fossil of the Late Ordovician-Permian tabulate coral Favosites
    †Favosites
  • †Fenestella
    • †Fenestella emaciata
    • †Fenestella sinuosa
  • †Fimbrispirifer
  • †Finkelnburgia
    • †Finkelnburgia bridgei – or unidentified comparable form
  • †Fistuliporella
    • †Fistuliporella minima
  • †Fletcherina
    • †Fletcherina incognita – or unidentified comparable form
  • †Floweria
    • †Floweria chemungensis

G
  • †Ganorhynchus
    • †Ganorhynchus oblongus – type locality for species
  • †Geminospora
  • Fossil of the Cambrian trilobite Genevievella
    †Genevievella
    • †Genevievella campbellina – type locality for species
    • †Genevievella pennstatensis – type locality for species
    • †Genevievella plesiochielus – type locality for species
  • †Gigantocharinus – type locality for genus
    • †Gigantocharinus szatmaryi – type locality for species
  • †Girtya
    • †Girtya pennslvanica
    • †Girtya pennsylvanica – type locality for species
  • †Glabrocingulum
    • †Glabrocingulum grayvillense
  • †Glaphyraspis
    • †Glaphyraspis ovata
  • †Glaukerpeton – type locality for genus
    • †Glaukerpeton avinoffi – type locality for species
  • †Glyptocrinus
  • †Glyptodesma
    • †Glyptodesma erectum – tentative report
  • †Gnathodus
  • †Goniomylacris – type locality for genus
    • †Goniomylacris pauper – type locality for species
  • †Goniophora
    • †Goniophora hamiltonensis
  • †Grandispora
    • †Grandispora cornuta
    • †Grandispora upensis
  • Fossils of the Middle Ordovician-Early Devonian trilobite Gravicalymene
    †Gravicalymene
  • †Greenops
    • †Greenops boothi

H
  • †Hadrotreta
  • Life restoration of the Late Devonian eurypterid ("sea scorpion") Hallipterus
    †Hallipterus
    • †Hallipterus lacoanus
  • †Hapaloptera – type locality for genus
    • †Hapaloptera gracilis – type locality for species
  • †Hardieopterus
    • †Hardieopterus myops
  • †Hazelia
    • †Hazelia walcotti
  • †Healdia
  • †Helcionella
  • †Hemimylacrella
    • †Hemimylacrella mammothi – type locality for species
  • †Hemimylacris
    • †Hemimylacris ramificata – type locality for species
  • †Herrmannina
  • †Heslerodus
    • †Heslerodus divergens
  • †Hexactinellid
    • †Hexactinellid spicules
  • †Hibbardella
  • †Hibbardia
    • †Hibbardia lacrimosa
  • †Hindeodus
  • †Holcacephalus
    • †Holcacephalus tunda
  • †Hollinella
    • †Hollinella sella – or unidentified comparable form
    • †Hollinella tricollina
  • Life restoration of the Middle-Late Devonian placoderm fish Holonema
    †Holonema
    • †Holonema horrida – type locality for species
    • †Holonema rugosa
  • †Holopea
  • †Holoptychius
    • †Holoptychius americanus
    • †Holoptychius filosus – type locality for species
    • †Holoptychius giganteus
  • †Holoptychus
    • †Holoptychus flabellatus – type locality for species
    • †Holoptychus latus – type locality for species
    • †Holoptychus serrulatus – type locality for species
  • †Homacanthus
    • †Homacanthus acinaciformis – type locality for species
  • †Homilodonta
    • †Homilodonta filistriata
  • †Hostimella
    • †Hostimella crispa
  • †Housia
    • †Housia vacuna
  • †Hudsonaster
    • †Hudsonaster lancolatus – or unidentified comparable form
  • †Hughmilleria
    • †Hughmilleria shawangunk
  • †Hymenocaris
  • †Hymenozonotriletes
    • †Hymenozonotriletes explanatus
    • †Hymenozonotriletes granulatus
  • Life restoration of the Late Devonian four-limbed animal precursor Hynerpeton
    †Hynerpeton – type locality for genus
  • †Hyolithellus
    • †Hyolithellus micans
  • †Hyolithes
    • †Hyolithes wanneri
  • †Hyolithid
  • †Hypselentoma
    • †Hypselentoma perhumerosa
  • †Hystricosporites
    • †Hystricosporites multifurcatus
    • †Hystricosporites porcatus
  • †Hystriculina
    • †Hystriculina wabashensis

I
  • †Ianthinopsis
  • †Iddingsia
    • †Iddingsia anatina
  • †Idiomylacris – type locality for genus
    • †Idiomylacris gracilis – type locality for species
  • †Imlerella
    • †Imlerella praecipita – type locality for species
  • †Indiana – tentative report
  • †Inflatia
  • †Inocaulis
  • †Iocrinus
    • †Iocrinus subcrassus
  • †Irvingella
    • †Irvingella major
  • Life restoration of the Permian amphibian Isodectes
    †Isodectes
    • †Isodectes obtusus – type locality for species
  • †Isotelus
    • †Isotelus gigas
  • †Ithycephalus

K
  • †Katabuporhynchus
    • †Katabuporhynchus mesacostalis
  • Fossilized heads of the Silurian eurypterid ("sea scorpion") Kiaeropterus (specimens 1-8)
    †Kiaeropterus
    • †Kiaeropterus otisius
  • †Kindbladia
    • †Kindbladia wichitaensis
  • †Kingstonia
    • †Kingstonia apion
    • †Kingstonia ara
    • †Kingstonia cheilusis – type locality for species
    • †Kingstonia trapezoidia – type locality for species
    • †Kingstonia ulrichi – type locality for species
    • †Kingstonia walcotti
  • †Kinklidoblatta
    • †Kinklidoblatta lesquereuxi – type locality for species
  • †Kinocera – tentative report
  • †Kinzercystis
    • †Kinzercystis durhami
  • †Kinzeria – type locality for genus
    • †Kinzeria crinita – type locality for species
  • †Kladognathus
  • †Kloedinia
  • †Knoxisporites
    • †Knoxisporites dedaleus
  • †Kochiella
  • Fossil of the Cambrian trilobite Kootenia
    †Kootenia
    • †Kootenia marcoui
  • †Kraeuselisporites
  • †Kutorgina
    • †Kutorgina cingulata
    • †Kutorgina edsoni
  • †Kyphocephalus

L
Life restoration of the Carboniferous tree-sized club moss relative Lepidodendron
  • †Lacoea
    • †Lacoea seriata – type locality for species
  • †Lagenospermum
    • †Lagenospermum imparirameum
  • †Lambdagnathus
  • †Lancastria
  • †Lecanospira
    • †Lecanospira compacta
    • †Lecanospira salteri – or unidentified comparable form
  • †Leiorhynchus
  • †Leiozonotriletes
  • †Lepdidodendropsis
  • †Leperditia
  • †Lepidocystis
    • †Lepidocystis wanneri
  • †Lepidodendropsis
    • †Lepidodendropsis scobiniformis
    • †Lepidodendropsis stigillariodes
    • †Lepidodendropsis stigillaroides
    • †Lepidodendropsis vandergrachti
  • †Lepidostrobus
    • †Lepidostrobus gallowayi
  • †Leptaena
    • †Leptaena rhomboidalis
    • †Leptaena richmondensis – or unidentified comparable form
  • †Leptodesma
    • †Leptodesma cadmus
    • †Leptodesma extenuatum
    • †Leptodesma hector
    • †Leptodesma laevis
    • †Leptodesma lichas
    • †Leptodesma maclurii
    • †Leptodesma mortoni
    • †Leptodesma naviforme
    • †Leptodesma nereus
    • †Leptodesma nitida
    • †Leptodesma orus
    • †Leptodesma patulum
    • †Leptodesma pelops
    • †Leptodesma phaon
    • †Leptodesma sayi
    • †Leptodesma sociale
    • †Leptodesma spinerigum
  • †Leptomitus
  • †Lichenocrinus
  • Lingula
    • †Lingula carbonaria
    • †Lingula delia
    • †Lingula ligea
  • Illustration of a fossilized shell of the Cambrian-Late Ordovician brachiopod Lingulella
    †Lingulella
    • †Lingulella marcia – or unidentified comparable form
  • †Lingulepis
    • †Lingulepis acuminata
  • †Linoproductus
    • †Linoproductus cora
  • †Liospira
    • †Liospira americana
  • †Llanoaspidella – type locality for genus
    • †Llanoaspidella bigenusia – type locality for species
    • †Llanoaspidella warriorsmarkensis – type locality for species
  • †Llanoaspis – tentative report
  • †Lonchocephalus
    • †Lonchocephalus planus – type locality for species
    • †Lonchocephalus swartzi – type locality for species
    • †Lonchocephalus waddlei – type locality for species
  • †Longispina
    • †Longispina mucronatus
  • †Lophophyllidium
    • †Lophophyllidium profundum
  • †Lophospira
  • †Lophozonotriletes
    • †Lophozonotriletes excisus
    • †Lophozonotriletes tuberosus
  • †Loxonema
  • Life restoration of the Permian snake-like amphibian Lysorophus showing speculative egg-coiling behavior
    †Lysorophus
    • †Lysorophus dunkardensis

M
  • †Macluritella – tentative report
    • †Macluritella multiseptarius
  • †Maeneceras
    • †Maeneceras milleri
  • †Margaretia
  • †Mariopteris
  • †Martinia
  • †Mediospirifer
    • †Mediospirifer audaculus
    • †Mediospirifer belliplicata
    • †Mediospirifer bellitropis
    • †Mediospirifer dromgoldi
  • †Megakozlowskiella
    • †Megakozlowskiella sculptilis
  • Life restoration of the Late Ordovician eurypterid ("sea scorpion") Megalograptus
    †Megalograptus – tentative report
  • †Megamolgophis
    • †Megamolgophis agostinii
  • †Megastrophia
  • †Menomonia
    • †Menomonia calymenoides
  • †Mesitoblatta
    • †Mesitoblatta emersoni – type locality for species
  • †Mesotaphraspis
  • †Metacoceras
    • †Metacoceras cornutum
  • †Metaxyblatta – type locality for genus
    • †Metaxyblatta hadroptera – type locality for species
  • †Metropator – type locality for genus
    • †Metropator pusillus – type locality for species
  • †Michelinoceras
  • †Micromitra
    • †Micromitra alabamensis
  • †Mimagoniatites – tentative report
  • †Modiella
    • †Modiella pygmaea
  • †Modiolopsis
  • †Modiomorpha
    • †Modiomorpha concentrica
  • †Modocia
    • †Modocia benorensis – type locality for species
  • †Monotrypa
    • †Monotrypa benjamini
  • Fossilized shell of the Devonian brachiopod Mucrospirifer
    †Mucrospirifer
  • †Mylacridae
    • †Mylacridae carbonina
  • †Mylacris
    • †Mylacris angusta – type locality for species
    • †Mylacris anthracophila – type locality for species
    • †Mylacris dubia – type locality for species
    • †Mylacris lucifuga – type locality for species
    • †Mylacris ovalis – type locality for species
    • †Mylacris pennsylvanica – type locality for species
    • †Mylacris truncatula – type locality for species

N
  • †Nalivkinella
    • †Nalivkinella echoense
  • †Nanahughmilleria
    • †Nanahughmilleria clarkei
  • †Naticonema
  • Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis
    †Naticopsis
  • †Necymylacris
    • †Necymylacris heros – type locality for species
    • †Necymylacris lacoana – type locality for species
  • †Neoblairella – type locality for genus
    • †Neoblairella crassimarginata – type locality for species
  • †Neochonetes
    • †Neochonetes granulifer
  • †Neomylacris
    • †Neomylacris major – type locality for species
    • †Neomylacris pulla – type locality for species
  • †Neoprionodus
  • †Neoraistrickia
  • †Neosimplicius – type locality for genus
    • †Neosimplicius medialis – type locality for species
  • †Neospirifer
  • †Neriopteris
    • †Neriopteris lanceolata
  • †Nervostrophia
    • †Nervostrophia nervosa
  • Fronds of the Carboniferous seed fern Neuropteris
    †Neuropteris
  • †Nisusia
    • †Nisusia festinata
  • Nucula
    • †Nucula bellistriata
    • †Nucula lirata
  • Nuculana
  • †Nuculites
    • †Nuculites oblongatus
    • †Nuculites planulatus
    • †Nuculites triqueter
  • †Nuculopsis
    • †Nuculopsis girtyi

O
  • †Octonaria
    • †Octonaria bifurcata
    • †Octonaria dicristata
    • †Octonaria quadricostata
  • †Ogygopsis
    • †Ogygopsis klotzi
  • †Olenellus
    • †Olenellus alius
    • †Olenellus similaris
    • †Olenellus wanneri
  • Fossil of the Cambrian trilobite Olenoides
    †Olenoides
    • †Olenoides buttsi – type locality for species
    • †Olenoides pennsylvanicus – type locality for species
    • †Olenoides serratus
  • †Olethroblatta
    • †Olethroblatta americana – type locality for species
  • †Orbiculoidea
    • †Orbiculoidea tullia
  • †Orsadesmus – type locality for genus
    • †Orsadesmus rubecollus – type locality for species
  • Life restoration of the Carboniferous-Permian freshwater shark Orthacanthus
    †Orthacanthus
    • †Orthacanthus compressus
    • †Orthacanthus platypternus
    • †Orthacanthus texensis
  • †Orthoceras
  • †Orthograptus
    • †Orthograptus quadrimucronatus
  • †Orthomylacris
    • †Orthomylacris alutacea – type locality for species
    • †Orthomylacris analis – type locality for species
    • †Orthomylacris cordiformis – type locality for species
    • †Orthomylacris mansfieldi – type locality for species
    • †Orthomylacris pauperata – type locality for species
    • †Orthomylacris pennsylvaniae – type locality for species
    • †Orthomylacris pittstoniana – type locality for species
    • †Orthomylacris pluteus – type locality for species
  • †Orthonota
    • †Orthonota parvula – tentative report
    • †Orthonota undulata
  • †Orthonychia
    • †Orthonychia parva
  • †Orthotetes
  • †Orthotheca
    • †Orthotheca shriveri – type locality for species
  • †Oryctocephalus
  • Restoration
    †Osteolepis
  • †Oulodus
  • †Ovatia
  • †Oxynoblatta
    • †Oxynoblatta vicina – type locality for species
  • †Ozarkodina

P
  • †Paedeumias
    • †Paedeumias eboracense
    • †Paedeumias glabrum
    • †Paedeumias yorkense
  • Fossil of the Cambrian trilobite Pagetia
    †Pagetia
  • †Paladin
  • †Palaeoneilo
    • †Palaeoneilo constricta
    • †Palaeoneilo fecunda
    • †Palaeoneilo muta
    • †Palaeoneilo oweni
    • †Palaeoneilo plana
    • †Palaeoneilo tenuistriata
  • †Palaeotherates
    • †Palaeotherates pennsylvanicus – type locality for species
  • †Palaeozygopleura
    • †Palaeozygopleura delphicola
  • †Panenka
  • †Parabolbina
    • †Parabolbina cardocornella
    • †Parabolbina obliqua
  • †Parabolinella
    • †Parabolinella occidentalis
  • †Parabolinoides
  • †Paracyclas
    • †Paracyclas lirata
  • †Parahaplophlebium
    • †Parahaplophlebium longipenne – type locality for species
  • †Parahughmilleria
    • †Parahughmilleria maria
  • †Parajuresania
    • †Parajuresania nebrascensis
  • †Parallelodon
    • †Parallelodon obsoletus
  • †Paranacystites
  • Assemblage of the Early-Middle Devonian brachiopod Paraspirifer
    †Paraspirifer
    • †Paraspirifer acuminatus
  • †Parvohallopora
    • †Parvohallopora dalei – or unidentified comparable form
  • †Paterina
    • †Paterina bella
  • †Pelagiella
  • †Pemphigaspis
    • †Pemphigaspis bullata
    • †Pemphigaspis intermedia – type locality for species
    • †Pemphigaspis matutina
  • †Penniretepora
  • Fossilized theca of the Carboniferous blastoid echinoderm ("sea bud") Pentremites
    †Pentremites
  • †Periomella
    • †Periomella roddyi
    • †Periomella yorkensis
  • †Peronopsis
  • †Petalodus
    • †Petalodus ohioensis
  • †Petrocrania
  • Fossil of the Devonian trilobite Phacops rana
    †Phacops
  • †Pharkidonotus
    • †Pharkidonotus percarinatus
  • †Phestia
  • †Philhedra
    • †Philhedra laelia – or unidentified comparable form
  • †Phoberoblatta – type locality for genus
    • †Phoberoblatta grandis – type locality for species
    • †Phoberoblatta reticulata – type locality for species
  • †Pholidops
  • †Pholidostrophia
    • †Pholidostrophia pennsylvanica
  • †Phragmactis
  • †Phricodothyris
  • †Phthinomylacris
    • †Phthinomylacris medialis – type locality for species
    • †Phthinomylacris pauper – type locality for species
  • †Phthonia
    • †Phthonia sectifrons
  • †Phyloblatta
    • †Phyloblatta indecisa – type locality for species
    • †Phyloblatta prior – type locality for species
  • †Pinctus
    • †Pinctus latus
  • Pinna
  • †Pionoceras
    • †Pionoceras swartzi
  • †Plagioblatta
    • †Plagioblatta campbelli – type locality for species
    • †Plagioblatta cockerelli – type locality for species
  • †Plagioglypta
    • †Plagioglypta meekiana
  • †Planoendothyra – tentative report
    • †Planoendothyra associata
  • †Planutenia
    • †Planutenia flectata
  • †Plasiochiton – type locality for genus
    • †Plasiochiton curiosus – type locality for species
  • Fossilized shell of the Silurian-Early Triassic sea snail Platyceras
    †Platyceras
    • †Platyceras euomphaloides
    • †Platyceras lineatum
  • †Platylichas
  • †Plectorthis
    • †Plectorthis plicatella
  • †Pleurodictyum
    • †Pleurodictyum styloporum
  • †Polidevcia
    • †Polidevcia bellistriata
  • †Poliella
    • †Poliella bala
  • †Polypora
  • †Ponderodictya
    • †Ponderodictya favulosa
    • †Ponderodictya punctulifera
  • †Poroblattina
    • †Poroblattina parvula – type locality for species
  • †Praewaagenoconcha
    • †Praewaagenoconcha speciosa
  • †Primitiella
    • †Primitiella unicornis
  • †Prismopora
  • †Productella
    • †Productella rectispina
  • †Productus
  • Restoration of the Silurian trilobite Proetus
    †Proetus
    • †Proetus haldemani – tentative report
    • †Proetus parviusculus
  • †Prolepidodendron
    • †Prolepidodendron breviinternodium
  • †Promopalaeaster
    • †Promopalaeaster bellulus
    • †Promopalaeaster pricei
  • †Promytilus
  • †Protobarinophyton
    • †Protobarinophyton pennsylvanicum
  • Illustration of a fossil of the Cambrian crustacean Protocaris
    †Protocaris
  • †Protocycloceras
    • †Protocycloceras rushense
  • †Protoleptostrophia
    • †Protoleptostrophia perplana
  • †Protomya – or unidentified comparable form
  • †Protospongia – tentative report
  • †Prozacanthoides
  • †Pseudoatrypa
    • †Pseudoatrypa devoniana
  • †Pseudolingula
    • †Pseudolingula rectilateralis
  • †Pseudopaolia
    • †Pseudopaolia lacoana – type locality for species
  • †Pseudopolyernus
    • †Pseudopolyernus laminarum – type locality for species
  • †Pseudosaratogia
    • †Pseudosaratogia bulbosa
    • †Pseudosaratogia lata – tentative report
    • †Pseudosaratogia magna
  • †Pseudotealliocaris
    • †Pseudotealliocaris palincsari
  • †Pteridomylacris – type locality for genus
    • †Pteridomylacris paradoxa – type locality for species
  • †Pterinea
  • †Pterinopecten
    • †Pterinopecten hermes
    • †Pterinopecten princeps
  • †Pterochaenia
  • †Pterygometopus
    • †Pterygometopus achates
  • †Ptilograptus
  • †Ptilomylacris – type locality for genus
    • †Ptilomylacris medialis – type locality for species
  • †Ptilopora
  • †Ptomatis
  • †Ptychoglyptus
    • †Ptychoglyptus virginensis – or unidentified comparable form
  • †Ptychoparella
    • †Ptychoparella lancastra
  • †Ptychopteria
    • †Ptychopteria chemungensis
    • †Ptychopteria flabella
    • †Ptychopteria salamanca
  • †Ptylopora
  • †Pugnax
    • †Pugnax pugnus
  • †Pustula
    • †Pustula pertenuis
  • †Pustulatia
    • †Pustulatia pustulosa

Q

R
  • †Rafinesquina
    • †Rafinesquina alternata
  • †Retichonetes
    • †Retichonetes marylandicus
    • †Retichonetes vicinus
  • †Retispira
    • †Retispira marcouianus
  • †Retusotriletes
    • †Retusotriletes phillipsii
  • †Rhacophyton
  • †Rhacopteris
  • †Rhinidictya
  • Fossil of the Silurian eurypterid ("sea scorpion") Rhinocarcinosoma
    †Rhinocarcinosoma
    • †Rhinocarcinosoma cicerops
  • †Rhipidomella
    • †Rhipidomella leucosia
    • †Rhipidomella penelope
    • †Rhipidomella vanuxemi
  • †Rhodea
    • †Rhodea alleghanensis – type locality for species
    • †Rhodea tionestana – type locality for species
    • †Rhodea vespertina – type locality for species
  • †Rhombopora
  • †Rhytimya
    • †Rhytimya radiata
  • †Ribeiria
    • †Ribeiria parva – or unidentified comparable form
  • †Roddyia
  • †Rodea
    • †Rodea vespertina – type locality for species
  • †Ruedemannipterus
    • †Ruedemannipterus stylonuroides
  • †Rugospora
    • †Rugospora flexuosa

S
  • Illustration of fossilized shells of the mysterious Cambrian organism Salterella
    †Salterella
    • †Salterella acervulosa
    • †Salterella conulata
    • †Salterella mccullochi
    • †Salterella pulchella
  • †Sanguinolites
  • †Sapphicorhynchus
    • †Sapphicorhynchus sappho
  • †Saratogia
    • †Saratogia type locality for species – informal
  • Fossilized fin of the Devonian lobe-finned fish Sauripterus
    †Sauripterus
  • †Schaefferia (Paleozoic plant) – or unidentified comparable form
  • †Schizoblatta
    • †Schizoblatta pennsylvanica – type locality for species
  • †Schizodiscus
    • †Schizodiscus capsa
  • †Schizodus
    • †Schizodus cuneatus
  • †Schizophoria
    • †Schizophoria amanaensis
    • †Schizophoria impressa
    • †Schizophoria striatula
  • †Schuchertella
    • †Schuchertella parva
    • †Schuchertella variabilis
  • †Schuchertia
    • †Schuchertia laxata
  • †Sciadophyton
  • †Secarisporites
  • †Selkirkia
  • †Septopora
  • †Serracaris
  • †Shansiella
    • †Shansiella carbonaria
  • Fossils of the Cambrian arthropod Sidneyia
    †Sidneyia
  • †Sigillaria
  • †Sinochonetes
    • †Sinochonetes lepidus
  • †Sinuites
    • †Sinuites cancellatus
  • †Soleniscus
    • †Soleniscus primogenia
    • †Soleniscus typicus
  • †Solenochilus
    • †Solenochilus collectum
  • †Solenopleurella
    • †Solenopleurella elatifrons – type locality for species
    • †Solenopleurella transversa – type locality for species
  • †Solutotherates
    • †Solutotherates analis – type locality for species
  • †Sowerbyella
    • †Sowerbyella plicatellus
    • †Sowerbyella rugosa
  • †Spathognathodus
  • †Spelaeotriletes
    • †Spelaeotriletes crustalus
    • †Spelaeotriletes resolutus
  • †Sphenomylacris
    • †Sphenomylacris singularis – type locality for species
  • †Spinatrypa
    • †Spinatrypa hystrix
    • †Spinatrypa spinosa
  • †Spinocyrtia
    • †Spinocyrtia girtyi
    • †Spinocyrtia granulosa
    • †Spinocyrtia macbridei
  • †Spinulicosta
    • †Spinulicosta spinulicosta
  • Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer
    †Spirifer
    • †Spirifer disjunctus
    • †Spirifer varicosa
  • †Spongophylloides
  • †Spyroceras
    • †Spyroceras nuntium
  • †Stauromatidium
    • †Stauromatidium marylandicum
  • †Stemtonoceras
    • †Stemtonoceras elongatum
  • †Stenomylacris – type locality for genus
    • †Stenomylacris elegans – type locality for species
  • †Stereolasma
  • †Stittaspis
    • †Stittaspis loria – type locality for species
  • †Straparollus
  • †Striacoceras
    • †Striacoceras typum – tentative report
  • †Strobeus
    • †Strobeus paludinaeformis
  • †Strophalosia
    • †Strophalosia truncata
  • †Stropheodonta
    • †Stropheodonta demissa
  • Fossilized shell of the Ordovician-Silurian brachiopod Strophomena
    †Strophomena
  • †Styliolina
    • †Styliolina bellistriata
    • †Styliolina fissurella
  • †Subrensselandia
    • †Subrensselandia claypolii
  • †Sulcocephalus
    • †Sulcocephalus candidus
    • †Sulcocephalus granulosus
  • †Sulcoretepora
    • †Sulcoretepora incisurata
    • †Sulcoretepora sinuosa – or unidentified comparable form
  • †Swataria – type locality for genus
    • †Swataria derstleri – type locality for species
  • †Syntrophina
  • †Syscioblatta
    • †Syscioblatta allegheniensis – type locality for species
    • †Syscioblatta pennsylvanica – type locality for species

T
  • †Tabulipora
  • †Taeniaster
    • †Taeniaster maximus
  • †Taenicephalus
    • †Taenicephalus shumardi
  • Fossils of the Devonian plant stem morphogenus Taeniocrada
    †Taeniocrada
  • †Taeniopora
    • †Taeniopora exigua
  • †Taonurus
  • †Tellinopsis
  • †Temnocheilus
    • †Temnocheilus crassus
  • †Tentaculites
    • †Tentaculites attenuatus
  • †Tetradella
    • †Tetradella multipustulosa
  • †Tetraxylopteris
  • †Thlipsura
    • †Thlipsura ultimata
  • †Thlipsurella
    • †Thlipsurella semipunctata
  • †Titanodictya
    • †Titanodictya jucunda – type locality for species
  • †Titusvillia – type locality for genus
    • †Titusvillia drakei – type locality for species
  • †Trepospira
    • †Trepospira illinoisensis
  • Restoration showing the top (left) and underside of the Late Ordovician trilobite Triarthrus
    †Triarthrus
    • †Triarthrus becki
  • †Tricrepicephalus
    • †Tricrepicephalus arcuatus – type locality for species
  • †Trimerus
    • †Trimerus dekayi
  • †Triphyllopteris
    • †Triphyllopteris biloba – type locality for species
    • †Triphyllopteris latilobata – type locality for species
    • †Triphyllopteris latilobatus
    • †Triphyllopteris lescuriana
  • †Trocophyllum
    • †Trocophyllum breviinternodium
  • †Tropidoleptus
    • †Tropidoleptus carinatus
  • †Truncalosia
    • †Truncalosia truncata
  • †Truncatiramus – now regarded as a jr. synonym of Erettopterus[1][2]
  • †Tryplasma
  • †Tubulella
  • †Tuzoia
  • †Tylothyris
    • †Tylothyris mesacostalis
    • †Tylothyris pauliformis

U
  • †Ulrichia
    • †Ulrichia elongata
    • †Ulrichia spinifera
  • Fossil of the Ordovician-Devonian sea star Urasterella
    †Urasterella
    • †Urasterella pulchella

V
  • †Vallatisporites
    • †Vallatisporites pusilites
  • †Vernonaspis
  • †Verrucosisporites
    • †Verrucosisporites nitidus
    • †Verrucosisporites scurrus
  • †Vinella

W
  • Fossil of the Cambrian trilobite Wanneria
    †Wanneria
    • †Wanneria walcottana
  • †Warrenella
    • †Warrenella laevis
  • †Welleraspis
    • †Welleraspis newfoundlandensis – or unidentified comparable form
  • †Whidbornella
    • †Whidbornella lachrymosa
  • †Wilkingia
    • †Wilkingia terminale
  • †Worthenia
    • †Worthenia tabulata

X
  • †Xenoblatta
    • †Xenoblatta pennsylvanica – type locality for species
  • †Xenocheilos
    • †Xenocheilos spineum

Y
  • Life restoration of the probable Cambrian mollusc Yochelcionella
    †Yochelcionella
    • †Yochelcionella americana – type locality for species
    • †Yochelcionella chinensis
    • †Yochelcionella greenlandica
  • †Yorkia
    • †Yorkia wanneri

Z
  • †Zaphrenthis
  • †Zelophyllia
  • †Zelophyllum
  • †Zygospira

References
  1. Ciurca, Samuel J.; Tetlie, O. Erik (2007). "Pterygotids (Chelicerata; Eurypterida) from the Silurian Vernon Formation of New York". Journal of Paleontology. 81 (4): 725–736. doi:10.1666/pleo0022-3360(2007)081[0725:PEFTSV]2.0.CO;2. ISSN 0022-3360.
  2. Dunlop, J. A., Penney, D. & Jekel, D. 2015. A summary list of fossil spiders and their relatives. In World Spider Catalog. Natural History Museum Bern, online at http://wsc.nmbe.ch, version 18.5 http://www.wsc.nmbe.ch/resources/fossils/Fossils18.5.pdf (PDF).
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