List of the Cenozoic life of Virginia
This list of the Cenozoic life of Virginia contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Virginia and are between 66 million and 10,000 years of age.
A
- †Abdounia
- Abies
- †Abra
- †Abra aequalis
- Acanthocybium
- †Acanthocybium proosti
- Accipiter
- †Accipiter striatus
Living adult (center) and chick (lower right) Accipiter striatus, or sharp-shinned hawks
- †Achilleodinium
- †Achilleodinium bioformoides
- Acipenser
- Acmaea
- Acteocina
- †Acteocina canaliculata
- †Acteocina candei
- Acteon
- †Acteon novellus
- †Actinocyclus
- †Actinocyclus ellipticus
- †Actinoptychus
- †Actinoptychus marylandicus
- †Actinoptychus virginicus
- Actitis – or unidentified comparable form
A living Actitis macularius, or spotted sandpiper- †Actitis macularia
- †Adeorbis
- Aegolius
- †Aegolius acadicus
- Aequipecten
- †Aequipecten eboreus
- Aetobatus
- †Aetobatus arcuatus
- †Aetobatus irregularis
- Aetomylaeus
- Agelaius
- †Agelaius phoeniceus
- †Aglaocetus
Fossilized skull of the Miocene baleen whale Aglaocetus- †Aglaocetus patulus – type locality for species
- †Aglyptorhynchus
- †Aglyptorhynchus venablesi
- Albula
- †Albula eppsi
- Alca
- †Alca torda – or unidentified comparable form
- Alces – or unidentified comparable form
- Aligena
- †Aligena aequata
- †Allaeochelys
Fossilized skeleton of the Eocene pig-nosed turtle Allaeochelys - Alnus
- †Alopecias
- †Alopecias grandis – type locality for species
- Alopias
- Aluterus
- †Ambystoma
- Amia
- Amiantis – tentative report
- Ammonia
- †Ammonia limbatobeccarii
- †Ammonia sobrina
- †Ammonia tepida
- †Amonia
- †Amonia limbatobeccarii
- †Amonia limbatobeccarrii
- †Amonia sobrina
- †Amonia tepida
- †Ampelopsis
- Amyda – or unidentified comparable form
Assemblage of fossilized skeletons of the softshell turtle Amyda- †Amyda pennata
- Anachis
- †Anachis avara
- †Anachis camax – or unidentified comparable form
- †Anachis harrisii
- Anadara
- †Anadara arata
- †Anadara callicestosa
- †Anadara lienosa
- †Anadara ovalis
- †Anadara transversa
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Shell of an Anadara transversa, or transverse ark clam
- †Anapteris
- †Anapteris regalis
- Anas
- †Anas crecca
- †Anas discors
- †Anas platyrhynchos – or unidentified comparable form
- Anguilla
- †Anguilla bostoniensis – or unidentified comparable form
- †Anguispira
- †Anguispira alternata
Illustration of the shell of a living Anguispira alternata land snail, or flamed tigersnail
- Angulus
- †Angulus agilis
- †Angulus texanus
- Anisodonta – tentative report
- Anomia
- †Anomia lisbonensis
- †Anomia ruffini
- †Anomia simplex
- †Anomotodon
- †Anomotodon novus
- Anoxypristis
A living Anoxypristis cuspidata, or knifetooth sawfish- †Anoxypristis macrodens
- †Anthus – or unidentified comparable form
- Aporrhais
- †Aporrhais potomacensis
- †Araloselachus
- †Araloselachus cuspidata
- Arbacia
- †Arbacia improcera
- †Archaeohippus
- †Archaeomanta
- †Archaeomanta melenhorsti
- Architectonica
- †Architectonica ianthinae
- †Arctodus
Restoration of an Arctodus, or short-faced bear, with a human to scale - Argobuccinum
- Argopecten
- Arius – tentative report
- Arossia
- †Arossia glyptopoma
- †Arossia newmani
- †Ashleychelys
- †Ashleychelys palmeri
- Asio
- †Asio flammeus – or unidentified comparable form
A living Asio flammeus, or Short-eared owl
- †Aspideretoides
- †Aspideretoides virginianus – type locality for species
- Astarte
- †Astarte castanea
- †Astarte cobhamensis
- †Astarte coheni
- †Astarte concentrica
- †Astarte deltoidea
- †Astarte exaltata
- †Astarte obruta
- †Astarte perplana
- †Astarte rappahannockensis
- †Astarte undulata
- †Astarte vaginulata
- Astrangia
- †Astroscopus
- Astyris
- †Astyris communis
- †Astyris lunata
- Athleta
Multiple views of a fossilized shell of the volute sea snail Athleta- †Athleta haleanus – or unidentified comparable form
- †Athleta petrosa
- †Athleta tuomeyi
- †Atractodon
- †Atractodon stonei
B
- Balaena
- †Balaena ricei – type locality for species
- Balaenoptera
- †Balaenotus
Fossilized vertebrae of the Pliocene baleen whale Balaenotus - Balanophyllia
- †Balanophyllia conradi – type locality for species
- †Balanophyllia elaborata
- Balanus
- †Balbocerosoma
- Barbatia
- †Barbatia carolinensis – tentative report
- Barnea
- †Barnea costata
- †Barnea truncata
- Bartramia
- †Basilotritus
- †Basilotritus wardii
- Bathytormus
- †Bathytormus alaeformis
- †Beckettia – tentative report
- Betula
- Bicorbula
- †Bicorbula idonea
- Bison
- Bittiolum
- Blarina
- †Blarina brevicauda
- †Bohaskaia – type locality for genus
Life restoration of the Pliocene toothed whale Bohaskaia- †Bohaskaia monodontoides – type locality for species
- †Bolcyrus – or unidentified comparable form
- †Bolcyrus formosissimus
- Bolivina
- Bombycilla
- Bonasa
- †Bonasa umbellus
- †Bonasa umbrellus
- †Bootherium
- †Bootherium bombifrons
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Fossilized skeleton of the Pleistocene-Holocene bovid Bootherium bombifrons, or Harlan's musk ox.
- Boreotrophon
- †Boreotrophon tetricus
- Bornia
- †Bornia longipes
- †Bornia triangulata
- Bos
- Bostrycapulus
- Botaurus
- Brachidontes
- †Brachidontes potomacensis
- Brachiodontes
- Branta
- †Brevoortia
- †Brychaetus
- †Brychaetus muelleri
- Bubo
- †Bubo virginianus
A living Bubo virginianus, or great horned owl
- Buccella
- †Buccella depressa
- †Buccinifusus
- †Buccinifusus parilis
- Buccinofusus
- †Buccinofusus parilis
- Buccinum
- Bucephala
- Bufo
A living Anaxyrus fowleri (formerly Bufo fowleri), or Fowler's toad - Buliminella
- †Buliminella elegantissima – or unidentified comparable form
- †Bulliopsis
- †Bulliopsis quadrata
- †Burnhamia
- †Burnhamia daviesi
- Busycon
- †Busycon carica
- †Busycon caricum
- †Busycon contrarium
Shell in multiple views of a Busycon contrarium whelk - †Busycon coronatum
- †Busycon incile
- †Busycon maximum
- †Busycon maximus
- Busycotypus
- †Busycotypus canaliculatus
- †Busycotypus coronatum
- †Busycotypus incile
- †Busycotypus rugosum
- Buteo
- †Buteo jamaicensis
A living Buteo jamaicensis, or red-tailed hawk - †Buteo lineatus
- †Buteo platypterus
C
- †Cacharias
- Cadulus
- †Cadulus thallus
- Caecum
- Caestocorbula
- †Caestocorbula fossata
- †Calasoma
- †Calippus
- †Calippus regulus – or unidentified comparable form
- Calliostoma
A living Calliostoma top sea snail- †Calliostoma bellum
- †Calliostoma philanthropus
- †Calliostoma philothropus
- †Calliostoma virginicum
- †Callippus
- †Callippus regulus – or unidentified comparable form
- Callista
- †Callista perovata
- Callocardia
- †Callocardia catharia
- Calonectris
- †Calonectris kurodai – type locality for species
- †Calophos
- †Calophos plicatile
- †Calorhadia
- †Calorhadia bella
- †Calorhadia opulenta
- †Calorhadia semen
- †Calyptraphorus
- †Calyptraphorus trinodiferus
- †Calyptraphorus velatus
- Cambarus
- †Cambarus bartonii – or unidentified comparable form
- †Cambarus longulus – or unidentified comparable form
- †Campanuyla
- Canachites
- †Canachites canadensis
- †Canarium
- †Canarium parksii
- Cancellaria
- Cancer
- Canis
- †Canis dirus
Modern mounted skeleton of Canis lupus, the grey wolf, to scale with a fossilized skeleton of the Pleistocene wolf Canis dirus, or dire wolf - †Canis latrans
- †Canis lupus – or unidentified comparable form
- Cantharus
- †Cantharus marylandicus
- Canthon
- Capella
- Carcharhinus
- Carcharias
- †Carcharias hopei
- †Carcharias teretidens
- Carcharodon
- †Carcharodon hastalis
Fossilized tooth of the Miocene-Pliocene shark Cosmopolitodus hastalis, or broad-toothed mako
- Carditamera
- †Carditamera arata
- †Caricella
- †Carinorbis
- †Carinorbis dalli
- †Carolinapecten
- †Carolinapecten eboreus
- †Carolinapecten urbannaensis
- †Carolinochelys
- Carphophis
- Carya
- Caryocorbula
- †Caryocorbula caribaea
- †Caryocorbula conradi
- †Caryocorbula contracta
- †Caryocorbula deusseni
- Castor
- †Castor canadensis
- †Castoroides
Mounted fossilized skeleton of the Pliocene-Pleistocene giant beaver Castoroides - Catharus
- †Catinella
- Catoptrophorus
- †Catostomus
- Celtis
- Cerithiopsis
- Certhia
- †Certhia familiaris
- †Cervalces – tentative report
- Cervus
- Cetorhinus
- †Cetotherium
Life restoration of the Miocene-Pliocene whale Cetotherium- †Cetotherium crassangulum – type locality for species
- Chaetura
- Chama
- †Charadrisu
- †Charadrisu vociferus
- Charadrius
- Chelydra
- †Chelydra serpentina
A living Chelydra serpentina, or common snapping turtle
- †Chesacardium
- †Chesacardium acutilaqueatum
- †Chesacardium laqueatum
- †Chesaconcavus
- †Chesaconcavus myosulcatus
- †Chesaconcavus proteus
- †Chesaconcavus rossi
- †Chesaconcavus santamaria
- †Chesapactern
- †Chesapactern madisonius
- †Chesapecten
- †Chesapecten clintonius
- †Chesapecten coccymelus
- †Chesapecten edgecombensis
- †Chesapecten jeffersonius
Shells of the Pliocene scallop Chesapecten jeffersonius - †Chesapecten madisonianis
- †Chesapecten madisonius
- †Chesapecten middlesexensis
- †Chesapecten nefrens
- †Chesapecten santamaria
- Chione
- †Chione cancellata
- †Chione cribraria
- Chlamys
- †Chlamys brookvillensis
- †Chlamys choctavensis
- †Chlamys decemaria
- †Chlamys johnsoni
- †Chlamys santamaria
- †Chlamys seabeensis
- †Chlamys vaunwythei – or unidentified comparable form
- †Chlamys wahtubbeana
- †Chordeiles
- †Chordeiles minor
A living Chordeiles minor, or common nighthawk
- Cibicides
- †Cibicides lobatulus
- Cingula
- †Cingula norfolkensis
- Circulus
- †Circulus liratus
- Cirsotrema
- Cistothorus
- †Cistothorus platensis – or unidentified comparable form
- Clavus – report made of unidentified related form or using admittedly obsolete nomenclature
- †Clavus eburnea
- †Cleistosphaeridium
- †Cleistosphaeridium placacanthum
- Clethrionomys
- Clidiophora
- †Clidiophora crassidens
- Cliona
A living Cliona sponge - Coccyzus
- †Cochliolepsis
- Colaptes
- †Colaptes auratus
- Colinus
- †Colinus virginianus
- Coluber
- †Columella
- †Columella simplex
- Colus
Shells in differing orientations of Colus whelk sea snails - Condylura
- †Condylura cristata
- †Condylura crystata
- †Conradostrea
- †Conradostrea sculpturata
- Contopus
- †Contropus
- †Contropus virens
- Conus
- †Conus adversarius
- †Conus deluvianus
- †Conus diluvianus
- †Conus marylandicus
- Corbula
Shell of a Corbula basket clam- †Corbula extenuata
- †Corbula inaequalis
- †Corbula subengota
- †Corbula texana
- †Coronia
- †Corrundinium
- Corvus
- †Corynorynchus
- †Costaglycymeris
- †Costaglycymeris mixoni
- †Costaglycymeris subovata
- †Costaglycymeris virginiae
- Cotonopsis
- †Coturnipes – or unidentified comparable form
- †Coturnipes cooperi
- †Coupatezia
- †Coupatezia woatersi
- Crassatella
- †Crassatella aquiana – type locality for species
- Crassinella
- †Crassinella lunulata
- †Crassinella minor
- Crassostrea
- Crepidula
- †Crepidula convexa
- †Crepidula dumosa
- †Crepidula fornicata
- †Crepidula plana
- †Crepidula radiata
- †Crepidula spinosium
- †Cretolamna
Fossil of the Early Cretaceous-Eocene shark Cretolamna - Cribrilina
- †Cribrilina punctata
- †Cribroperidinium
- Crocodylus
- †Crocodylus antiquus – type locality for species
- Crotalus
- †Crotalus adamanteus – or unidentified comparable form
- †Crotalus horridus
- Crucibulum
- †Crucibulum constrictum
- †Crucibulum costata
- †Crucibulum ramosum
- †Crucibulum striatum
- Cryptobranchus
- †Cryptobranchus alleganiensis
A living Cryptobranchus alleganiensis, or hellbender salamander
- †Cryptogramma
- †Cryptogramma acrosticoides
- Cryptosula
- Cryptotis
- †Cryptotis parva
- Ctena
- †Ctena speciosa
- †Cubitostrea
- †Cubitostrea divaricata
- †Cubitostrea sellaeformis
- Cucullaea
Shell of a Cucullaea, or false ark shell- †Cucullaea gigantea
- †Cucullaea transversa
- Cumingia
- †Cumingia tellinoides
- †Cuneocorbula
- †Cuneocorbula subengonata
- Cupuladria
- †Cupuladria biporosa
- †Cupuladria owenii
- Cyanocitta
- Cyclocardia
- †Cyclocardia borealis
- †Cyclocardia granulata
- †Cyclopoma
Fossilized skeleton of the Eocene bony fish Cyclopoma- †Cyclopoma folmeri – type locality for species
- Cyclostremiscus
- †Cyclostremiscus obliquestriatus
- Cylichna
- †Cylichna cylindricus
- †Cylichna cylindrus
- †Cylichna venusta
- †Cylindracanthus
- †Cylindracanthus rectus
- †Cymatogonia
- †Cymatogonia amblyoceros
- Cymatosyrinx
- †Cymatosyrinx lunata
- †Cynelos
Fossilized cranium of the Miocene bear-dog Cynelos- †Cynelos idoneus – or unidentified comparable form
- Cynoscion
- Cyrtopleura
- †Cyrtopleura arcuata
- †Cyrtopleura costata
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D
- †Dallarca
- †Dallarca carolinensis
- †Dallarca elevata
- †Dallarca idonea
- †Dallarca virginiae
- Dasyatis
- Dasypus
- †Dasypus bellus – or unidentified comparable form
Fossilized mandible in multiple views of the Pleistocene Dasypus bellus, or beautiful armadillo
- †Deflandrea
- †Deflandrea phosphoritica
- †Delphineis
- †Delphineis angustata
- †Delphineis biseriata
- †Delphineis novaecaesaraea
- †Delphineis penelliptica
- †Delphinodon
- †Delphinodon dividum
- Dendrocopos
- †Dendrocopos pubescens
- †Dendrocopos villosus
- †Dendrogapus – or unidentified comparable form
- †Dendrogapus canadensis
- †Dendroica – or unidentified comparable form
- †Dendroica coronata
A living Setophaga coronata, or yellow-rumped warbler
- Dentalium
- †Dentalium alternatum
- †Dentalium attenuatum
- †Dentalium carolinense
- †Dentalium carolinensis
- †Denticulopsis
- †Denticulopsis hustedtii
- Dentimargo
- Desmognathus
- Diadophis
- Dicaelus
- †Diemichtylus
- †Diemichtylus viridescens
- Dinocardium
- Diodora
- †Diodora auroraensis – or unidentified comparable form
- †Diodora redimicula
- †Diorocetus
- †Diorocetus hiatus
- †Diplocynodon
Mounted fossilized skeleton of the Paleocene-Miocene crocodilian Diplocynodon- †Diplocynodon hantoniensis
- Diplodonta
- †Diplodonta acclinis
- †Diplodonta hopkinsensis
- †Diplodonta leana
- †Diplodonta punctata
- †Diplodonta ungulina
- Discinisca
- †Discinisca lugubris
- †Discoaster
- Discoporella
- †Discoporella umbellata
- Discus
- †Discus catskillensis
A living Discus catskillensis land snail, or angular disc
- Divalinga
- †Divalinga quadrisulcata
- †Dolicholatirus
- †Dolichonyx – or unidentified comparable form
- †Dollochelys – tentative report
- Donax
- †Donax parvula
- †Donax variabilis
- Dosinia
- †Dosinia acetabulm
- †Dosinia acetabulum
- †Dosinia discus
- †Dosiniopsis
- †Dosiniopsis lenticularis
- Dryocopus
- †Dryocopus pileatus
A living Dryocopus pileatus, or pileated woodpecker
E
- †Eburneopecten
- †Eburneopecten dalli
- †Eburneopecten scintillatus – or unidentified comparable form
- Echinocardium
- †Echinocardium orthonotum
- Echinorhinus
- †Echinorhinus priscus
- †Ecphora
- †Ecphora gardnerae
- †Ecphora kochi
- †Ecphora quadricostata
- †Ecphora tampaensis
- †Ectopistes
- †Ectopistes migratorius
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Taxidermied male Ectopistes migratorius, or passenger pigeon
- †Egertonia
- †Egertonia isodonta
- Elaphe
- †Elaphe guttata – or unidentified comparable form
- †Elaphe obsoleta – or unidentified comparable form
- Electra
- †Electra monostachys
- Elphidium
- †Elphidium articulatum
- †Elphidium brooklynense
- †Elphidium clavatum
- †Elphidium discoidale
- †Elphidium excavatum
- †Elphidium galvestonense
- †Elphidium gunteri
- †Elphidium incertum
- †Elphidium latispatium
- †Elphidium subarticum
- †Elphidium tumidum
- †Elytrocysta
- †Empidonax
- Ensis
- †Ensis directus
- †Ensis ensiformis
- †Eobalaenoptera – type locality for genus
Life restoration of two of the Miocene baleen whale Eobalaenoptera pursued by the giant shark Carcharocles megalodon- †Eobalaenoptera harrisoni – type locality for species
- Eontia
- †Eontia ponderosa
- †Eopleurotoma – or unidentified comparable form
- †Eopleurotoma harrisi
- †Eopleurotoma potomacensis
- †Eosphargis
- †Eosphargis gigas
- †Eosphargis insularis
- †Eosuchus
- †Eosuchus lerichei
- †Eosuchus minor
- Epitonium
- †Epitonium angulatum
- †Epitonium championi
- †Epitonium humphreysii
- †Epitonium multistriatum
- †Epitonium potomacense
- †Epitonium rupicola
- †Epitonium virginianum
- Eptesicus
- Equus
- †Equus complicatus
- †Equus fraternus
- Eremophila
- Erethizon
- †Erethizon dorsatum
- Erolia
- †Erolia minutilla
- †Erycinella
- †Erycinella ovalis
- Eschrichtius
- †Eschrichtius leptocentrus – type locality for species
- †Eschrichtius robustus
A living Eschrichtius robustus, or gray whale
- Esox
- †Esox americanus – or unidentified comparable form
- †Esthonyx – or unidentified comparable form
- Eucrassatella
- Eulima
- †Eulima dalli
- †Eulima rectiuscula
- †Euloxa
- †Euloxa latisulcata
- Eumeces
- †Eumeces laticeps – or unidentified comparable form
- Eupleura
- †Eurhinodelphis
Life restoration of the Miocene whale Eurhinodelphis (above)- †Eurhinodelphis longirostris
- Euspira
- †Euspira heros
- †Euspira marylandica
- Eutamias
- Euvola
F
- Falco
- †Falco sparverius
A living Falco sparverius, or American kestrel
- Felis
- Ficus
- †Ficus affinis
- †Fisherichthys – type locality for genus
- †Fisherichthys folmeri – type locality for species
- Flabellum
- Fossarus
- †Fossarus lura
- †Fossarus lyra
- Fusinus
- †Fusinus exilis
G
- Gadus
- Galeocerdo
A living Galeocerdo cuvier, or tiger shark- †Galeocerdo aduncus
- †Galeocerdo contortus
- †Galeocerdo latidens
- Galeodea
- Galeorhinus
- †Galeorhinus ypresiensis
- Galerita
- †Galerita bicolor – or unidentified comparable form
- Gallinula
- Gari
- Gastrochaena
- Gastrocopta
- Gavia
- †Gavialosuchus
Fossilized skull of the Miocene crocodile relative Gavialosuchus- †Gavialosuchus antiquus
- Gemma
- †Gemma magna
- †Gemma purpurea
- Genota – or unidentified comparable form
- †Genota bellistriata
- Geomys
- Geukensia
- Gibbula – tentative report
- †Gibbula glandula
- Ginglymostoma
A living Ginglymostoma nurse shark- †Ginglymostoma africanam
- †Ginglymostoma serra
- †Ginglymostoma subafricanum
- †Glaphyrocysta
- Glaucomys
- †Glaucomys sabrinus
- Globigerina
- †Globigerina apertura
- †Globoquadrina
- †Globoquadrina hirsuta
- Globulina
- Glossus
- †Glossus fraterna
- †Glossus fraternas
- †Glossus marylandica
- †Glossus santamaria
- †Glottidia
- †Glottidia inexpectans
- Glycymeris
Fossilized shell of a Glycymeris, or bittersweet clam- †Glycymeris americana
- †Glycymeris idonea
- †Glycymeris lisbonensis
- †Glycymeris trigonella
- †Glycymeris tumulus – or unidentified comparable form
- †Goniothecium
- †Goniothecium rogersii
- Gouldia
- †Gouldia metastriata
- Granulina
- †Granulina ovuliformis
- Grus
- †Grus americana
A living Grus americana, or whooping crane
- †Gryphaeostrea
H
- †Hadrodelphis – or unidentified comparable form
- †Hadrodelphis calvertense
- †Haldea
- †Halicetus – tentative report
- †Halicetus ignotus
- Halichoerus
- †Halichoerus grypus
A living Halichoerus grypus, or grey seal
- Hanzawaia
- †Hanzawaia concentrica
- Hastula
- †Hastula simplex
- Haynesina
- †Haynesina germanica
- Helicodiscus
- †Helicodiscus inermis
- †Helicodiscus jacksoni
- †Helicodiscus parallelus
- Hemimactra
- †Hemimactra confraga
- †Hemimactra solidissima
- Hemipristis
A living Hemipristis weasel shark - Hendersonia
- †Hendersonia occulia
- †Hendersonia occulta
- †Heteraulacacysta
- Heterodontus
- †Heterodontus lerichei
- †Heterotorpedo
- †Heterotorpedo fowleri
- Hexanchus
- Hiatella
- Hipponix
- †Hipponix pygmaeus
- Hippoporidra
- †Hippoporidra calcarea
- Hippoporina
- †Hippoporina porosa
- †Homogalax – or unidentified related form
Fossilized skull of the Eocene tapir-like mammal Homogalax - Hydrobia
- Hydroides
- †Hydroides dianthus
- †Hydroides diantthus
- Hyla
- †Hyla crucifer – or unidentified comparable form
- Hylocichla
- †Hyopsodus – or unidentified comparable form
- †Hypolophodon
- †Hypolophodon sylvestris
- †Hyposaurus – or unidentified comparable form
- †Hystrichokolpoma
I
- †Icterus – or unidentified comparable form
- †Icterus spurius
A living Icterus spurius, or orchard oriole
- Ilyanassa
- †Ilyanassa arata
- †Ilyanassa granifera
- †Ilyanassa obsoleta
- †Ilyanassa procina
- †Ilyanassa trivittata
- †Iodes
- †Iodes multireticulata
- Ischadium
- Isistius
- †Isistius trituratus
- †Isognomen
- †Isognommen
- Isognomon
- †Isognomon maxilliata
- †Isognomon maxilliatus
- Istiophorus
A living Istiophorus , or sailfish - Isurus
J
- †Jacquhermania
- †Jacquhermania duponti
- Junco
- †Junco hyemalis
A living Junco hyemalis, or dark-eyed junco
K
- Kalolophus
- †Kalolophus antillarum
- †Kapalmerella
- †Kapalmerella mortoni
- †Kentriodon
Life restoration of the Oligocene-Miocene dolphin Kentriodon- †Kentriodon pernix
- Kuphus
- †Kuphus calamus
- †Kuphus fistula
- Kurtziella
L
- †Laevihastula
- †Laevihastula simplex
- Lagena
- †Lagopus
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Living Lagopus muta, or rock ptarmigan- †Lagopus mutus – or unidentified comparable form
- Lamna
- †Lamna obliqua
- Lampropeltis
- †Lampropeltis doliata
- Larus
- Lasiurus
- Latirus
- †Latirus marylandicus
- Lepisosteus
- †Leptomactra
- †Leptomactra delumbis
- †Leptophoca
- †Leptophoca lenis
- †Leptophoca proxima – or unidentified comparable form
- †Leptoxis
- Lepus
- †Lepus americanus
A living Lepus americanus, or snowshoe hare
- †Levifusus
- †Levifusus trabeatus
- Libinia
- †Limosa – or unidentified comparable form
- Linga
- †Linga amiantus
- †Lingulodinium
- †Lirodiscus
- †Lirodiscus virginianus
- †Lirofusus – or unidentified comparable form
- Lirophora
- †Lirophora alveata
- †Lirophora dalli
- †Lirophora latilirata
- †Lirophora vredenburgi
- †Lirosoma
- †Lirosoma sulcata
- †Lirosoma sulcosa
- Litiopa
- †Litiopa marylandica
- Littoraria
- Lontra
- †Lontra canadensis
Pair of living Lontra canadensis, or North American river otter
- Lophius
- †Lophius sagittidens
- †Lophocysta – tentative report
- Lophodytes
- Lopholatilus
- Loxia
- Lucina
- †Lucina aquiana – type locality for species
- †Lucina divaricata
- †Lucina pomilia
- †Lucina squamata
- Lucinisca
- †Lucinisca cribarius
- Lucinoma
- †Lucinoma contracta
- Lunatia
- †Lunatia interna
- †Lutianus
- Lydiphnis
- †Lydiphnis novicastri
- Lymnaea
- †Lymnaea catascopium
- Lynx
- †Lynx rufus – or unidentified comparable form
A living Lynx rufus, or bobcat
- Lyonsia
- †Lyonsia hyalina
M
- Macoma
- †Macoma balthica
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Shell of a Limecola balthica, or Baltic clam - †Macoma calcarea
- †Macoma constricta
- †Macoma tenta
- Macrocallista
- †Macrocallista reposta
- †Macrocallista subimpressa
- Mactrodesma
- †Mactrodesma subponderosa
- †Mactropsis
- †Mactropsis olssoni
- Makaira
- †Makaira nigricans – or unidentified comparable form
- †Mammut
- †Mammut americaneum
- †Mammut americanum
- †Mammuthus
- †Mammuthus columbi
- †Mammuthus primigenius
Life restorations of a Mammut americanum, or American mastodon (right), and a Mammuthus primigenius, or wooly mammoth (left)
- Marevalvata
- †Marevalvata tricarinata
- †Margaritaria
- †Margaritaria abrupta
- Marginella
- †Marginella bella
- †Marginella denticulata
- †Mariacolpus
- †Mariacolpus plebeia
- †Mariafusus
- †Mariafusus marylandica
- Marmota
- †Marmota monax
A living Marmota monax, or groundhog
- †Marvacrassatella
- †Marvacrassatella cyclopterus
- †Marvacrassatella marylandica
- †Marvacrassatella surryensis
- †Marvacrassatella turgidula
- †Marvacrassatella undulata
- †Marvacrassatella undulatus
- †Marvacrassatella urbannaensis
- †Marvacrassatella urbannensis
- Massilina
- Masticophis
- †Mclelannia
- †Mclelannia aenigma
- Megaceryle
- †Megalonyx
Mounted fossilized skeleton of the Miocene-Pleistocene ground sloth Megalonyx - Megalops
- Megaptera
- †Megaptera expansa
- Melanerpes
- †Melanerpes carolinus
- †Melanerpes erythrocephalus
- Meleagris
- Mellita
- †Mellita aclinensis
- †Mellita aclinus
- Melospiza
- Membranipora
- †Membranipora tenuis
- Membraniporella
- †Membraniporella petasus – or unidentified comparable form
- Mephitis
- Mercenaria
- †Mercenaria campechiensis
- †Mercenaria capax
- †Mercenaria corrugata
- †Mercenaria cuneata
- †Mercenaria druidi
- †Mercenaria inflata
- †Mercenaria mercenaria
Collection of Mercenaria mercenaria, also known as hard clams or quahogs - †Mercenaria tetrica
- Mergus
- †Meridiania
- †Meridiania conyexa
- †Merychippus
- †Mesocetus
- †Mesocetus pusillus
- †Mesocetus siphunculus – type locality for species
- Mesoplodon
- †Mesoplodon longirostris – or unidentified comparable form
- †Mesorhytis – tentative report
- †Mesorhytis pomonkensis
- †Metaxytherium
Mounted fossilized skeleton of the Miocene-Pleistocene manatee relative Metaxytherium- †Metaxytherium crataegense
- †Metaxytherium cratagense
- †Metopocetus – type locality for genus
- †Metopocetus durinasus – type locality for species
- Microporella
- †Microporella ciliata
- Microtus
- †Microtus chrotorrhinus
- †Microtus ochrogaster
- †Microtus pennsylvanicus
- †Microtus pinetorum
A living Microtus pinetorum, or woodland vole - †Microtus xanthognathus
- †Microtus zanthognathus
- Mictomys
- †Mictomys borealis
- Miltha
- †Miltha aquiana
- †Miocepphus
- †Miocepphus blowi – type locality for species
- †Miocepphus bohaskai
- †Miocepphus mcclungi
- Mitrella
- †Mitrella communius
- Modiolus
- †Modiolus ducateli
- †Modiolus squamosus
- Mola
- Molothrus
- †Molothrus ater
A living Molothrus ater, or brown-headed cowbird
- †Monotherium
- Morus
- †Morus bassanus
- †Moxostoma
- Mulinia
- †Mulinia congesta
- †Mulinia congregata
- †Mulinia lateralis
- †Multiporina
- †Multiporina cornuta
- Musculus
- †Musculus lateralis
- †Musculus virginica
- Mustela
- †Mustela americana
- †Mustela erminea
- †Mustela frenata
- †Mustela nivalis
- †Mustela vison
- †Mya
- †Mya arenaria
- †Mya wilsoni – tentative report
- Myliobatis
- †Myliobatis dixoni
- †Myliobatis latidens
- †Myliobatis striatus
- †Mylohyus
Fossilized skeleton of the Pliocene-Holocene peccary Mylohyus - Myochama
- Myotis
- †Myotis grisescens
- †Myotis keenii
- †Myotis lucifugus
- Myriophyllum
- Myrtea – tentative report
- †Myrtea curta – or unidentified comparable form
- †Myrtea uhleri
- Mytilus
N
- †Nannaria
- †Nanogyra
- †Nanogyra virgula
- Napaeozapus
- †Napeozapus
- †Napeozapus insignis
- Nassarius
A living Nassarius, or nassa mud snail- †Nassarius marylandica
- †Nassarius peralta
- Naticarius
- Natrix
- Nebrius
- †Nebrius thielensis
- Negaprion
- Nemocardium
- Neofiber
- †Neofiber leonardi
- †Neopanope
- †Neopanope texana
- Neotoma
- †Neotoma floridana
Close-up of a Neotoma floridana, or eastern woodrat
- Nerodia
- Neverita
- †Neverita duplicatus
- †Ninoziphius
- †Ninoziphius platyrostris – or unidentified comparable form
- †Nipa – or unidentified comparable form
- †Nipa burtini
- Niso
- †Nocomis
- †Nocomis raneyi – or unidentified comparable form
A living Nocomis raneyi, or bull chub
- Noetia
- †Noetia incile
- Nonion
- Nonionella
- †Nonionella atlantica
- Notidanus
- †Notidanus primigenius
- Notophthalmus
- †Notophthalmus viridescens – or unidentified comparable form
- Notorhynchus
- Notorynchus
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Close-up portrait of a living Notorynchus cepedianus, or broadnose sevengill shark- †Notorynchus cepidianus
- †Noturus
- Nucula
- †Nucula ovula
- †Nucula proxima
- †Nucula taphria
- Nuculana
- †Nuculana acuta
- †Nuculana cliftonensis
- †Nuculana coelatella
- †Nuculana cultelliformis
- †Nuculana improcera
- †Nyssa
- †Nyssa sylavtica
O
- Ochotona
- Ocypode
- Odobenus
- Odocoileus
- Odontaspis
- †Odontaspis macrota
- †Odontaspis winkleri
- †Odontopteryx – tentative report
Illustration of a fossilized partial skull of the Paleocene-Eocene pseudo-toothed bird Odontopteryx - Odostomia
- Oliva
- †Oliva canaliculata
- †Oliva carolinae
- †Oliva sayana
- Olivella
- Ondatra
- Onthophagus
- †Onthophagus janus – or unidentified comparable form
- †Ontocetus – type locality for genus
- †Ontocetus emmonsi – type locality for species
- †Operculodinium
- Opheodrys
- †Opsanus
- Orthoyoldia
- †Orthoyoldia psammotaea
- †Orycterocetus
Life restoration of the Miocene sperm whale Orycterocetus- †Orycterocetus crocodilinus – type locality for species
- †Osteopygis
- †Osteopygis roundsi – type locality for species
- †Ostracion
- †Ostracion meretrix
- Ostrea
- †Ostrea alepidota
- †Ostrea compressirostra
- †Ostrea raveneliana
- †Ostrea sinuosa
- †Otodus
- †Otodus megalodon
Diagram illustrating the largest (grey) and most conservative (red) size estimates of the Miocene-Pliocene shark Carcharocles megalodon (sometimes Carcharodon or Otodus megalodon) with a whale shark (violet), great white shark (green), and anachronistic human (black) to scale
- Otus
- †Oxyrhina
- †Oxyrhina retroflexa
- †Oxyura
P
- †Pachecoa
- †Pachecoa decisa – or unidentified comparable form
- †Pachecoa ellipsis
- †Pachygaleus
- †Pachygaleus lefevrei
- †Palaeocystodinium
- †Palaeocystodinium golzowense
- †Palaeogaleus
- †Palaeogaleus vincenti
- †Palaeohypotodus
- †Palaeohypotodus ratoti
- †Palaeophis
Restoration of the Cretaceous-Eocene sea snake Palaeophis- †Palaeophis casei
- †Palaeophis grandis
- †Palaeophis toliapicus
- †Palaeophis virginianus – type locality for species
- †Palaeorhincodon
- †Palaeorhincodon wardi
- †Palaeosinopa – or unidentified comparable form
- Pandora
- †Pandora arenosa
- †Pandora gouldiana
- †Pandora trilineata
- Panopea
- †Panopea elongata
- †Panopea goldfussi
- †Panopea goldfussii
- †Panopea reflexa
- Panopeus
- Panthera
- †Panthera leo
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A living Panthera leo, or lion
- Paraconcavus
- †Paraconcavus neusensis
- †Paraconcavus prebrevicalcar
- †Paralbula
- †Paralbula marylandica
- †Paramya
- †Paramya subovata
- Parascalops
- †Parietobalaena
Life restoration of the Miocene baleen whale Parietobalaena and calf - †Parophisaurus
- †Parophisaurus mccloskeyi – type locality for species
- Parus
- Parvanachis
- Parvilucina
- †Parvilucina crenulata
- †Parvilucina multilineatus
- †Parvilucina multistriata
- Passerella
- †Passerella iliaca
A living Passerella iliaca, or fox sparrow
- Pecten
- †Pecten humphreysii
- †Pecten marylandica
- †Pecten perplanus
- †Pecten seabeensis
- †Pedalion
- †Pedalion maxillatum
- Pedioecetes
- Pekania
- †Pekania pennanti – or unidentified comparable form
- †Pelagornis
Life restoration of the Oligocene-Pleistocene false-toothed bird Pelagornis - †Pelocetus
- †Pelocetus calvertensis
- †Pentadinium
- †Pentadinium goniferum
- †Pentadinium laticinctum
- †Peradectes
- †Peradectes guottai – type locality for species
- †Perimyotis
- Periploma
- †Periploma leanum
- Perisoreus
- †Perisoreus canadensis
A living Perisoreus canadensis, or grey jay
- †Perisorus
- †Perisorus canadensis
- Peristernia
- †Peristernia filicata
- Peromyscus
- Petaloconchus
- †Petaloconchus graniferus
- †Petaloconchus virginica
- †Petriathyris
- Petricola
- Petrochelidon
- †Petrocheliodon
- †Petrocheliodon pyrrhonota
- †Phalacrocoras
- †Phalacrocoras auritus
- Phalacrocorax
- †Phalacrocorax auritus
A living Phalacrocorax auritus, or double-crested cormorant
- †Phenacomya
- †Phenacomya petrosa
- Phenacomys
- †Phenacomys intermedius
- †Phenacomys ungava – or unidentified comparable form
- †Phocageneus – type locality for genus
- †Phocageneus venustus – type locality for species
- Pholadomya
- †Pholadomya marylandica
- Pholas
- †Pholas petrosa – tentative report
- Phyllodus
- †Phyllodus toliapicus
- Physa
- †Physogaleus
- †Physogaleus contortus
- †Physogaleus secundas
- †Phytolacca
- Pica
- †Pica pica
- Picea
- †Pinguinus
- †Pinguinus impennis
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Taxidermied specimen of Pinguinus impennis, or the great auk
- Pinicola – or unidentified comparable form
- †Pinquinus
- †Pinquinus impennis
- Pinus
- †Pipestrellus
- †Pipestrellus subflavus
- Pipistrellus
- Piranga
- Pisania
- †Pisania nux
- Pisidium
- †Pisidium dubium
- †Pisodus
- †Pisodus oweni
- Pitar
- †Pitar eversus
- †Pitar morrhuanus
- †Pitar ovatus
- †Pitar pyga
- Placopecten
- †Placopecten clintonius
- †Placopecten princepoides
- †Plagiarca
- †Plagiarca rhomboidella
- †Platygonus
Restoration of a herd of alarmed Miocene-Pleistocene peccaries of the genus Platygonus. Charles R. Knight (1922).- †Platygonus compressus
- †Platygonus vetus
- Plecotus
- †Plecotus townsendii – or unidentified comparable form
- †Pleiorytis
- †Pleiorytis centenaria
- Pleuromeris
- Plicatula
- †Plicatula filamentosa
- †Plicatula gibbosa
- Pluvialis
- Podiceps
- †Podiceps auritus
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A living Podiceps auritus, or horned grebe
- Podilymbus
- Pogonias
- †Pogonias multidentatus – type locality for species
- Polinices
- †Polinices aratus
- Polydora
- Polygonum
- †Pomatiopsis
- †Pooecetes
- Poroeponides
- †Poroeponides lateralis
- †Poroeponides repanda – or unidentified comparable form
- Porzana
- †Potamogeton
- †Premontria
- †Premontria degremonti
- †Prionodon
- †Prionodon egertoni
- Prionotus
- †Priscoficus
- †Priscoficus arguta
- Pristis
- †Pristis brachyodon – type locality for species
- †Pristis luthami
- †Procamelus – or unidentified comparable form
- †Procolpochelys
- †Procolpochelys charlestonensis
- †Procolpochelys grandaeva
- Procyon
- †Prolates
- †Prolates dormaalensis
- †Pronum
- †Pronum roscidum
- †Propristis
- †Propristis schweinfurthi
- †Prosthennops – report made of unidentified related form or using admittedly obsolete nomenclature
- †Prosthennops xiphidonticus
- †Protautoga
- †Protautoga conidens
- †Protelphidium
- †Protelphidium tisburyense
- Prunum
- †Prunum limatulum
- †Prunum roscidum
- Psammechinus
- †Psammechinus philanthopus
- †Psammechinus philanthropus
- †Psephophorus
Hypothetical restoration of the Oligocene-Pliocene sea turtle Psephophorus - Pseudochama
- †Pseudochama corticosa
- †Pseudochama corticosta
- Pseudoliva
- †Pseudoliva santander
- †Pseudoliva vetusta
- Pseudopolymorphina
- †Pseudopolymorphina novangliae – or unidentified comparable form
- Pseudotorinia
- †Pseudotorinia nupera
- †Pseudotorinia nuperum
- Pteria
- †Pteria colymbus
- †Pteria limula – tentative report
- Pteromeris
- †Pteromeris tridentata
- Pteromylaeus
- †Ptychosalpinx
- †Ptychosalpinx fossulata
- †Ptychosalpinx laqueata
- †Ptychosalpinx multirugata
- †Ptychosalpinx tuomeyi
- Pulvinites
- †Pulvinites lawrencei
- †Puppigerus
- †Puppigerus camperi
- Pycnodonte
- Pycnodus
Fossilized skeleton of the Late Cretaceous-Eocene bony fish Pycnodus - †Pyropsis
Q
- Quercus
A living Quercus, or oak tree - Quinqueloculina
- †Quinqueloculina compta
- †Quinqueloculina jugosa
- †Quinqueloculina lamarckiana
- †Quinqueloculina lamarkiana
- †Quinqueloculina microcosta
- †Quinqueloculina peyana
- †Quinqueloculina poeyana
- †Quinqueloculina seminula
R
- Raeta
- †Raeta plicatella
- Raja
- Rallus
- †Rana
- †Rana catesbiana – lapsus calami of Rana catesbeiana
- †Rana clamitans – or unidentified comparable form
- †Rana palustris
- †Rana pipiens
- †Rana sylvatica – or unidentified comparable form
- Rangia
- †Rangia clathrodon
- †Rangia cuneata
- Rangifer
- †Rangifer tarandus
A living Rangifer tarandus, or reindeer
- Ranzania
- †Ranzania grahami – type locality for species
- †Ranzania tenneyorum – type locality for species
- †Raphoneis
- †Raphoneis amphiceros
- †Raphoneis lancettula
- †Raphoneis scutula
- †Rebeccapecten
- †Rebeccapecten berryae
- Reticulofenestra
- †Retinella
- †Retinella electrina
- †Retinella virginica
- Retusa
- †Rhabdosteus
- †Rhaphoneis
- †Rhaphoneis gemmifera
- †Rhaphoneis parilis
- †Rhegnopsis
- †Rhegnopsis palaeatlantica – type locality for species
- Rhinobatos
- †Rhinobatos bruxelliensis
- Rhinoptera
A school of living Rhinoptera, or cownose rays- †Rhinoptera sherboni
- Rosalina
- †Rosalina columbiensis
- †Rosalina floridana
- Rostellaria
- †Rudiscala
S
- Saccella
- †Saccella catasarca – or unidentified comparable form
- †Saccella concentrica
- †Saccella parva
- †Samlandia
- †Sanganoma
- †Sarda
- †Sarda delheidi
- Sayornis
- †Sayornis phoebe
A living Sayornis phoebe, or eastern phoebe
- †Scala
- †Scala virginiana – type locality for species
- †Scalaspira – report made of unidentified related form or using admittedly obsolete nomenclature
- †Scalaspira strumosa
- Scalopus
- Scaphella
- Scaphiopus
- Sceloporus
- †Sceptrum
- †Sceptrum marylandicum
- †Schizodelphis
Fossilized skull of the Miocene toothed whale Schizodelphis- †Schizodelphis barnesi
- †Schizodelphis sulcatus
- Schizoporella
- †Schizoporella errata
- Sciaenops
- †Sciaenurus – or unidentified comparable form
- †Sciaenurus bowerbanki
- Sciuropterus
- †Sciuropterus volans
- Sciurus
- †Sciurus carolinensis
A living Sciurus carolinensis, or eastern gray squirrel
- Scolopax
- Scomberomorus
- †Scomberomorus bleekeri
- †Scombrinus
- Scyliorhinus
- †Scyliorhinus gilberti
- Seila
- †Seiurus
- Semele
- †Semele bellastriata
- †Semele purpurascens – or unidentified comparable form
- †Semele subovata
- †Semotilus
- †Semotilus corporalis – or unidentified comparable form
- Serpulorbis
- †Serpulorbis granifera
- †Serpulorbis granulifera
- †Serratolamna
Fossilized teeth of the Cretaceous-Eocene shark Serratolamna- †Serratolamna aschersoni
- †Serratolamna lerichei
- †Sialia – or unidentified comparable form
- Sinum
- †Sinum fragilis
- †Siphonocetus
- †Siphonocetus priscus – type locality for species
- Sitta
- †Sitta canadensis
- †Solarium
- Solemya
- Solen
- Solenosteira
- Sorex
- †Sorex arcticus
- †Sorex cinereus
- †Sorex dispar
- †Sorex fumeus
- †Sorex hoyi
- †Sorex palustris
A living Sorex palustris, or American water shrew
- †Spatangus
- †Spatangus glenni
- Spermophilus
- Sphaerium
- †Sphaerium striatinum
- †Sphaeroidinellopsis
- †Sphaeroidinellopsis subdehiscens
- Sphenia
- †Sphenia dubia
- Sphyraena
- †Sphyraena bognorensis
- †Sphyrapicus
- †Sphyrapicus varius
- Sphyrna
A living Sphyrna hammerhead shark - Spilogale
- †Spirodon
- †Spirodon carinata
- Spisula
- †Spisula modicella
- †Spisula parilis
- †Spisula praetenuis
- †Spisula rappahannockensis
- †Squalodon
Life restoration of the Oligocene-Miocene shark-toothed dolphin Squalodon- †Squalodon calvertensis
- †Squalodon protervus – or unidentified comparable form
- †Squalodon whitmorei – type locality for species
- Squalus
- †Squalus crenatidens
- Squatina
- †Squatina prima
- †Stenotrema
- †Stenotrema fraternum
- †Stenotrema hirsutum
- †Stephanopyxis
- †Stephanopyxis grunowii
- Stewartia
- †Stewartia anodonta
- Storeria
- †Strepsidura
- †Strepsidura perlatus
- †Streptochetus – or unidentified comparable form
- †Streptochetus potomacensis
- Striarca
- †Striarca centenaria
- †Striarca centernaria
- †Striatolamia
Fossilized teeth of the Paleocene-Miocene sandshark Striatolamia- †Striatolamia macrota
- Strioterebrum
- †Strioterebrum carolinensis
- †Strioterebrum concava
- †Strioterebrum dislocatum
- Strobilops
- †Strobilops labyrinthica
- Strombiformis
- Sturnella – or unidentified comparable form
- †Sullivanichthys – type locality for genus
- †Sullivanichthys mccloskeyi – type locality for species
- †Sumbos
- †Sumbos cavifrons
- Surculites
- Sveltia – or unidentified comparable form
- †Syllomus
- †Syllomus aegyptiacus – type locality for species
- †Syllomus crispatus
- Sylvilagus
- †Sylvilagus transitionalis
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A living Sylvilagus transitionalis, or New England cottontail
- Symplocos
- †Symplocos grimsleyi
- Synaptomys
- †Synaptomys cooperi
- †Synaptomys corealis
T
- Tagelus
- †Tagelus plebeius
- Tamias
- †Tamiasciurius
- †Tamiasciurius hudsonicus
- Tamiasciurus
- †Tamiasciurus hudsonicus
- †Tamiasciurus tenuidens – or unidentified comparable form
- Tapirus
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A living Tapirus, or tapir - Tautoga
- †Tectatodinium
- †Tectatodinium pellitum
- Tectonatica
- Teinostoma
- †Teinostoma harrisi
- †Teinostoma umbilicatum
- Tellina
Shell of a Tellina, or tellin- †Tellina declivis
- †Tellina leana
- †Tellina propetenella
- †Tellina virginiana – type locality for species
- †Tellina williamsi
- †Teratichthys
- †Teratichthys antiquitatus
- Terebra
- Teredo
- †Teredo virginiana
- Terrapene
- Textularia
- †Thalassiphora
- †Thalassiphora pelagica
- Thamnophis
- †Thecachampsa
Fossilized skeleton of the Oligocene-Miocene gavial relative Thecachampsa- †Thecachampsa antiqua
- †Thecachampsa antiquua
- †Thinocetus – type locality for genus
- †Thinocetus arthritus – type locality for species
- †Thoracosaurus
- †Thoracosaurus neocesariensis
- Thracia
- †Thuja
- Thunnus
A school of living Thunnus, or tunas - Tilia
- Tinospora
- †Tinospora folmerii
- Torcula
- †Torcula variabilis
- †Tornatellaea
- Toxostoma
- Transennella
- †Transennella carolinensis
- †Tretosphys
- Triakis
- †Triakis wardi
- Trigonostoma
- Tringa – or unidentified comparable form
- †Triodopsis
- †Triodopsis albolabris
- †Triodopsis burchi
- †Triodopsis juxtidens
- †Triodopsis tridentata
A living Triodopsis tridentata land snail, or northern threetooth - †Triodopsis vulgata
- Triphora
- †Triphotrocha
- †Triphotrocha comprinata – or unidentified comparable form
- Trochita
- †Trochita aperta
- †Trochita trochiformis
- Trochocyathus
- †Trochocyathus mitratus
- Trox
- †Tsuga
- †Tsuga canadensis – or unidentified comparable form
- Tucetona
- †Tucetona pectinata
- Tudicla – or unidentified comparable form
- †Turbinolia
- †Turbinolia acuticostata
- †Turbiosphaera – tentative report
- Turbonilla
- †Turbonilla interrupta
- †Turbonilla potomacensis
- †Turborotalia – report made of unidentified related form or using admittedly obsolete nomenclature
- †Turborotalia acostaensis
- Turdus
- Turritella
Fossilized shells of the Late Jurassic-modern tower snail Turritella- †Turritella alticostata
- †Turritella humerosa
- †Turritella invariabilis
- †Turritella nasuta
- †Turritella pilsbryi
- †Turritella potomacensis
- †Turritella praecincta
- †Turritella subvariabilis
U
- Uria
- †Uria aalge
A pair of living Uria aalge, or common murre
- Urosalpinx
- †Urosalpinx cinera
- †Urosalpinx cinerea
- †Urosalpinx phrikina
- †Urosalpinx rusticus
- †Urosalpinx subrusticus
- †Urosalpinx trossulus
- Ursus
V
- Vallonia
- Valvata
- Venericardia
- †Venericardia densata
- †Venericardia planicosta
- †Venericardia potapacoensis
- †Venericardia regia
- Vermetus
- Vertigo
- †Vertigo gouldi
- †Vertigo tridentata
- Vitis
- Vitrinella
- †Vitrinella virginiensis
- †Vokesinotus
- †Vokesinotus lepidotus
- †Voltaconger
Fossilized skeleton of the Eocene bony fish Voltaconger- †Voltaconger latispinus
- Voluta
- †Voluta mutabilis
- Volutifusus
- †Volutifusus obtusa
- Vulpes
W
- †Wetherellia
- †Wetherellia marylandica
- †Wetzeliella
X
- Xenophora
- †Xiphiacetus
Fossilized skeleton of the Miocene whale Xiphiacetus- †Xiphiacetus bossi – type locality for species
- †Xiphiacetus cristatus – type locality for species
Y
- Yoldia
- †Yoldia laevis
- †Yoldia limatula
Illustration of the shell of a Yoldia limatula, or file yoldia - †Yoldia potomacensis
Z
- Zapus
- †Zarhachis
- Zonotrichia
- †Zonotrichia albicollis
A living Zonotrichia albicollis, or white-throated sparrow
Notes
References
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 7 August 2017.
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