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
 * †Abdounia beaugei
 * †Abdounia minutissima
 * †Abdounia recticona
 * Abies
 * †Abra
 * †Abra aequalis
 * Acanthocybium
 * †Acanthocybium proosti
 * Accipiter
 * SharpshinnedHawk23.jpg †[[Accipiter striatus]]
 * †Achilleodinium
 * †Achilleodinium bioformoides
 * Acipenser
 * Acmaea
 * Acteocina
 * †Acteocina canaliculata
 * †Acteocina candei
 * Acteon
 * †Acteon novellus
 * †Actinocyclus
 * †Actinocyclus ellipticus
 * †Actinoptychus
 * †Actinoptychus marylandicus
 * †Actinoptychus virginicus
 * Actitis-macularia-005.jpg, or spotted sandpiper]] Actitis'' – or unidentified comparable form
 * †Actitis macularia
 * †Adeorbis
 * Aegolius
 * †Aegolius acadicus
 * Aequipecten
 * †Aequipecten eboreus
 * Aetobatus
 * †Aetobatus arcuatus
 * †Aetobatus irregularis
 * Aetomylaeus
 * Agelaius
 * †Agelaius phoeniceus
 * Aglaocetus moreni.jpg †[[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
 * †Alces alces
 * Aligena
 * †Aligena aequata
 * Allaeochelys crassesculptata - Naturmuseum Freiburg - DSC06737.jpg †[[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 gregaria.jpg [[Amyda]] – or unidentified comparable form
 * †Amyda pennata
 * Anachis
 * †Anachis avara
 * †Anachis camax – or unidentified comparable form
 * †Anachis harrisii
 * Anadara
 * †Anadara arata
 * †Anadara callicestosa
 * †Anadara lienosa
 * †Anadara ovalis
 * Transverse Ark Clam (Anadara transversa) Top (16114650260).jpg †[[Anadara transversa]]
 * †Anapteris
 * †Anapteris regalis
 * Anas
 * †Anas crecca
 * †Anas discors
 * †Anas platyrhynchos – or unidentified comparable form
 * Anguilla
 * †Anguilla bostoniensis – or unidentified comparable form
 * †Anguispira
 * AnguispiraAlternataExBinney.jpg †[[Anguispira alternata]]
 * Angulus
 * †Angulus agilis
 * †Angulus texanus
 * Anisodonta – tentative report
 * Anomia
 * †Anomia lisbonensis
 * †Anomia ruffini
 * †Anomia simplex
 * †Anomotodon
 * †Anomotodon novus
 * AnoxypristisCuspidataCSIRO.jpg, or knifetooth sawfish]] Anoxypristis''
 * †Anoxypristis macrodens
 * †Anthus – or unidentified comparable form
 * †Anthus spinoletta
 * Aporrhais
 * †Aporrhais potomacensis
 * †Araloselachus
 * †Araloselachus cuspidata
 * Arbacia
 * †Arbacia improcera
 * †Archaeohippus
 * †Archaeomanta
 * †Archaeomanta melenhorsti
 * Architectonica
 * †Architectonica ianthinae
 * ArctodusSimusReconstruct.jpg †[[Arctodus]]
 * †Arctodus simus
 * Argobuccinum
 * Argopecten
 * †Argopecten gibbus
 * Arius – tentative report
 * Arossia
 * †Arossia glyptopoma
 * †Arossia newmani
 * †Ashleychelys
 * †Ashleychelys palmeri
 * Asio
 * Short Eared Owl on the Ground.jpg †[[Asio flammeus]] – or unidentified comparable form
 * †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
 * †Astrangia danae
 * †Astroscopus
 * Astyris
 * †Astyris communis
 * †Astyris lunata
 * Athleta ficulina 01.JPG [[Athleta]]
 * †Athleta haleanus – or unidentified comparable form
 * †Athleta petrosa
 * †Athleta tuomeyi
 * †Atractodon
 * †Atractodon stonei

B

 * Balaena
 * †Balaena ricei – type locality for species
 * Balaenoptera
 * Balaenotus insignis.JPG †[[Balaenotus]]
 * Balanophyllia
 * †Balanophyllia conradi – type locality for species
 * †Balanophyllia elaborata
 * Balanus
 * †Balanus improvisus
 * †Balbocerosoma
 * Barbatia
 * †Barbatia carolinensis – tentative report
 * Barnea
 * †Barnea costata
 * †Barnea truncata
 * Bartramia
 * †Bartramia longicauda
 * †Basilotritus
 * †Basilotritus wardii
 * Bathytormus
 * †Bathytormus alaeformis
 * †Beckettia – tentative report
 * Betula
 * Bicorbula
 * †Bicorbula idonea
 * Bison
 * †Bison bison
 * Bittiolum
 * †Bittiolum alternatum
 * Blarina
 * †Blarina brevicauda
 * Bohaskaia NT.jpg †[[Bohaskaia]] – type locality for genus
 * †Bohaskaia monodontoides – type locality for species
 * †Bolcyrus – or unidentified comparable form
 * †Bolcyrus formosissimus
 * Bolivina
 * Bombycilla
 * †Bombycilla cedrorum
 * Bonasa
 * †Bonasa umbellus
 * †Bonasa umbrellus
 * †Bootherium
 * Harlan's musk ox (cast) - Indiana State Museum - DSC00404.JPG †[[Bootherium bombifrons]]
 * Boreotrophon
 * †Boreotrophon tetricus
 * Bornia
 * †Bornia longipes
 * †Bornia triangulata
 * Bos
 * †Bos taurus
 * Bostrycapulus
 * †Bostrycapulus aculeatus
 * Botaurus
 * †Botaurus lentiginosus
 * Brachidontes
 * †Brachidontes potomacensis
 * Brachiodontes
 * Branta
 * †Branta bernicla
 * †Brevirostrodelphis
 * †Brevirostrodelphis dividum
 * †Brevoortia
 * †Brychaetus
 * †Brychaetus muelleri
 * Bubo
 * Bubo virginianus 06.jpg †[[Bubo virginianus]]
 * Buccella
 * †Buccella depressa
 * †Buccinifusus
 * †Buccinifusus parilis
 * Buccinofusus
 * †Buccinofusus parilis
 * Buccinum
 * †Buccinum undatum
 * Bucephala
 * †Bucephala albeola
 * Bufo fowleri, Missouri Ozarks.JPG (formerly Bufo fowleri), or Fowler's toad]] Bufo''
 * †Bufo woodhousei
 * Buliminella
 * †Buliminella elegantissima – or unidentified comparable form
 * †Bulliopsis
 * †Bulliopsis quadrata
 * †Burnhamia
 * †Burnhamia daviesi
 * Busycon
 * †Busycon carica
 * †Busycon caricum
 * Busycon contrarium 01.JPG †[[Busycon contrarium]]
 * †Busycon coronatum
 * †Busycon incile
 * †Busycon maximum
 * †Busycon maximus
 * Busycotypus
 * †Busycotypus canaliculatus
 * †Busycotypus coronatum
 * †Busycotypus incile
 * †Busycotypus rugosum
 * Buteo
 * Buteo jamaicensis -Pillar Point Harbor, California, USA-8.jpg †[[Buteo jamaicensis]]
 * †Buteo lineatus
 * †Buteo platypterus

C

 * †Cacharias
 * Cadulus
 * †Cadulus thallus
 * Caecum
 * †Caecum cooperi
 * Caestocorbula
 * †Caestocorbula fossata
 * †Calasoma
 * †Calippus
 * †Calippus regulus – or unidentified comparable form
 * Calliostoma ligatum 2.jpg [[Calliostoma]]
 * †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
 * Chattooga River Crayfish (14174938652).jpg [[Cambarus]]
 * †Cambarus bartonii – or unidentified comparable form
 * †Cambarus longulus – or unidentified comparable form
 * †Campanuyla
 * Canachites
 * †Canachites canadensis
 * †Canarium
 * †Canarium parksii
 * Cancellaria
 * Cancer
 * †Cancer irroratus
 * Canis
 * Canis lupus & dirus.jpg, the grey wolf, to scale with a fossilized skeleton of the Pleistocene wolf Canis dirus, or dire wolf]] †Canis dirus''
 * †Canis latrans
 * †Canis lupus – or unidentified comparable form
 * Cantharus
 * †Cantharus marylandicus
 * Canthon
 * Capella
 * †Capella gallinago
 * Carcharhinus
 * Carcharias
 * †Carcharias hopei
 * †Carcharias teretidens
 * Carcharodon
 * Isurus hastalis labiale cm.JPG, or broad-toothed mako]] †Carcharodon hastalis''
 * Carditamera
 * †Carditamera arata
 * †Caricella
 * †Carinorbis
 * †Carinorbis dalli
 * †Carolinapecten
 * †Carolinapecten eboreus
 * †Carolinapecten urbannaensis
 * †Carolinochelys
 * †Carolinochelys wilsoni
 * Carphophis
 * †Carphophis amoenus
 * Carya
 * Caryocorbula
 * †Caryocorbula caribaea
 * †Caryocorbula conradi
 * †Caryocorbula contracta
 * †Caryocorbula deusseni
 * Castor
 * †Castor canadensis
 * Giant-beaver-fieldmuseum.jpg †[[Castoroides]]
 * †Castoroides ohioensis
 * Catharus
 * †Catinella
 * Catoptrophorus
 * †Catoptrophorus semipalmatus
 * †Catostomus
 * Celtis
 * †Celtis occidentalis
 * Cerithiopsis
 * †Cerithiopsis greenii
 * Certhia
 * †Certhia familiaris
 * †Cervalces – tentative report
 * †Cervalces scotti
 * Cervus
 * †Cervus elaphus
 * Cetorhinus
 * Cetotherium BW.jpg †[[Cetotherium]]
 * †Cetotherium crassangulum – type locality for species
 * Chaetura
 * †Chaetura pelagica
 * Chama
 * †Chama congregata
 * †Charadrisu
 * †Charadrisu vociferus
 * Charadrius
 * †Charadrius vociferus
 * Chelydra
 * Common Snapping Turtle Close Up.jpg †[[Chelydra serpentina]]
 * †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 Outside.jpg †[[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 -British Columbia -Canada-8c.jpg †[[Chordeiles minor]]
 * 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
 * †Clethrionomys gapperi
 * Clidiophora
 * †Clidiophora crassidens
 * Cliona celeta.JPG [[Cliona]]
 * Coccyzus
 * †Cochliolepsis
 * Colaptes
 * †Colaptes auratus
 * Colinus
 * †Colinus virginianus
 * Coluber
 * †Coluber constrictor
 * †Columella
 * †Columella simplex
 * Colus islandicus 001.jpg [[Colus]]
 * †Colus pygmaeus
 * Condylura
 * †Condylura cristata
 * †Condylura crystata
 * †Conradostrea
 * †Conradostrea sculpturata
 * Contopus
 * †Contopus virens
 * †Contropus
 * †Contropus virens
 * Conus
 * †Conus adversarius
 * †Conus deluvianus
 * †Conus diluvianus
 * †Conus marylandicus
 * Corbula modesta 002.jpg [[Corbula]]
 * †Corbula extenuata
 * †Corbula inaequalis
 * †Corbula subengota
 * †Corbula texana
 * †Coronia
 * †Corrundinium
 * Corvus
 * †Corvus brachyrhynchos
 * †Corynorynchus
 * †Costaglycymeris
 * †Costaglycymeris mixoni
 * †Costaglycymeris subovata
 * †Costaglycymeris virginiae
 * Cotonopsis
 * †Cotonopsis lafresnayi
 * †Coturnipes – or unidentified comparable form
 * †Coturnipes cooperi
 * †Coupatezia
 * †Coupatezia woatersi
 * Crassatella
 * †Crassatella aquiana – type locality for species
 * Crassinella
 * †Crassinella lunulata
 * †Crassinella minor
 * Crassostrea
 * †Crassostrea virginica
 * Crepidula
 * †Crepidula convexa
 * †Crepidula dumosa
 * †Crepidula fornicata
 * †Crepidula plana
 * †Crepidula radiata
 * †Crepidula spinosium
 * Cretolamna.jpg †[[Cretolamna]]
 * †Cretolamna appendiculata
 * 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
 * Hellbender.jpg †[[Cryptobranchus alleganiensis]]
 * †Cryptogramma
 * †Cryptogramma acrosticoides
 * Cryptosula
 * †Cryptosula pallasiana
 * Cryptotis
 * †Cryptotis parva
 * Ctena
 * †Ctena speciosa
 * †Cubitostrea
 * †Cubitostrea divaricata
 * †Cubitostrea sellaeformis
 * Cucullaea labiata 3.JPG [[Cucullaea]]
 * †Cucullaea gigantea
 * †Cucullaea transversa
 * Cumingia
 * †Cumingia tellinoides
 * †Cuneocorbula
 * †Cuneocorbula subengonata
 * Cupuladria
 * †Cupuladria biporosa
 * †Cupuladria owenii
 * Cyanocitta
 * †Cyanocitta cristata
 * Cyclocardia
 * †Cyclocardia borealis
 * †Cyclocardia granulata
 * Serranidae - Cyclopoma spinosum.JPG †[[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 lemanensis.JPG †[[Cynelos]]
 * †Cynelos idoneus – or unidentified comparable form
 * Cynoscion
 * Cyrtopleura
 * †Cyrtopleura arcuata
 * †Cyrtopleura costata

D

 * †Dallarca
 * †Dallarca carolinensis
 * †Dallarca elevata
 * †Dallarca idonea
 * †Dallarca virginiae
 * Dasyatis
 * Dasypus
 * D. bellus jaw.png †[[Dasypus bellus]] – or unidentified comparable form
 * †Deflandrea
 * †Deflandrea phosphoritica
 * †Delphineis
 * †Delphineis angustata
 * †Delphineis biseriata
 * †Delphineis novaecaesaraea
 * †Delphineis penelliptica
 * Dendrocopos
 * †Dendrocopos pubescens
 * †Dendrocopos villosus
 * †Dendrogapus – or unidentified comparable form
 * †Dendrogapus canadensis
 * †Dendroica – or unidentified comparable form
 * Audubon's Warbler Setophaga auduboni.jpg, or yellow-rumped warbler]] †Dendroica coronata''
 * Dentalium
 * †Dentalium alternatum
 * †Dentalium attenuatum
 * †Dentalium carolinense
 * †Dentalium carolinensis
 * †Denticulopsis
 * †Denticulopsis hustedtii
 * Dentimargo
 * †Dentimargo aureocinctus
 * Desmognathus
 * Diadophis
 * Dicaelus
 * †Diemichtylus
 * †Diemichtylus viridescens
 * Dinocardium
 * †Dinocardium robustum
 * Diodora
 * †Diodora auroraensis – or unidentified comparable form
 * †Diodora redimicula
 * †Diorocetus
 * †Diorocetus hiatus
 * Diplocynodon ratelii.JPG †[[Diplocynodon]]
 * †Diplocynodon hantoniensis
 * Diplodonta
 * †Diplodonta acclinis
 * †Diplodonta hopkinsensis
 * †Diplodonta leana
 * †Diplodonta punctata
 * †Diplodonta ungulina
 * Discinisca
 * †Discinisca lugubris
 * †Discoaster
 * Discoporella
 * †Discoporella umbellata
 * Discus
 * Discus catskillensis.jpg †[[Discus catskillensis]]
 * Divalinga
 * †Divalinga quadrisulcata
 * †Dolicholatirus
 * †Dolichonyx – or unidentified comparable form
 * †Dolichonyx oryzivorus
 * †Dollochelys – tentative report
 * Donax
 * †Donax parvula
 * †Donax variabilis
 * Dosinia
 * †Dosinia acetabulm
 * †Dosinia acetabulum
 * †Dosinia discus
 * †Dosiniopsis
 * †Dosiniopsis lenticularis
 * Dryocopus
 * PileatedWoodpeckerFeedingonTree.jpg †[[Dryocopus pileatus]]

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 (passenger pigeon).jpg †[[Ectopistes migratorius]]
 * †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
 * VMNH megalodon.jpg †[[Eobalaenoptera]] – type locality for genus
 * †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
 * †Eptesicus fuscus
 * Equus
 * †Equus complicatus
 * †Equus fraternus
 * Eremophila
 * †Eremophila alpestris
 * Erethizon
 * †Erethizon dorsatum
 * Erolia
 * †Erolia minutilla
 * †Erycinella
 * †Erycinella ovalis
 * Eschrichtius
 * †Eschrichtius leptocentrus – type locality for species
 * Graywhale MMC.jpg †[[Eschrichtius robustus]]
 * 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
 * †Eupleura caudata
 * Macrodelphinus_kelloggi.jpg †[[Eurhinodelphis]]
 * †Eurhinodelphis longirostris
 * Euspira
 * †Euspira heros
 * †Euspira marylandica
 * Eutamias
 * †Eutamias minimus
 * Euvola

F

 * Falco
 * AmericanKestrel02.jpg †[[Falco sparverius]]
 * Felis
 * †Felis domesticus
 * 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
 * Tiger shark.jpg, or tiger shark]] Galeocerdo''
 * †Galeocerdo aduncus
 * †Galeocerdo contortus
 * †Galeocerdo latidens
 * Galeodea
 * Galeorhinus
 * †Galeorhinus ypresiensis
 * Galerita
 * †Galerita bicolor – or unidentified comparable form
 * Gallinula
 * †Gallinula chloropus
 * Gari
 * Gastrochaena
 * Gastrocopta
 * †Gastrocopta armifera
 * †Gastrocopta contracta
 * Gavia
 * Gavialosuchus americanus Expominer 07.jpg †[[Gavialosuchus]]
 * †Gavialosuchus antiquus
 * Gemma
 * †Gemma magna
 * †Gemma purpurea
 * Genota – or unidentified comparable form
 * †Genota bellistriata
 * Geomys
 * Geukensia
 * †Geukensia demissa
 * Gibbula – tentative report
 * †Gibbula glandula
 * Nurse shark.jpg [[Ginglymostoma]]
 * †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
 * Glycymerididae - Glycymeris inflata.JPG [[Glycymeris]]
 * †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 Sasata.jpg †[[Grus americana]]
 * †Gryphaeostrea

H

 * †Hadrodelphis – or unidentified comparable form
 * †Hadrodelphis calvertense
 * †Haldea
 * †Halicetus – tentative report
 * †Halicetus ignotus
 * Halichoerus
 * Male gray seal marine mammal animal halichoerus grypus.jpg †[[Halichoerus grypus]]
 * Hanzawaia
 * †Hanzawaia concentrica
 * Hastula
 * †Hastula simplex
 * Haynesina
 * †Haynesina germanica
 * Helicodiscus
 * †Helicodiscus inermis
 * †Helicodiscus jacksoni
 * †Helicodiscus parallelus
 * Hemimactra
 * †Hemimactra confraga
 * †Hemimactra solidissima
 * Hemipristis elongata csiro-nfc.jpg [[Hemipristis]]
 * †Hemipristis serra
 * Hendersonia
 * †Hendersonia occulia
 * †Hendersonia occulta
 * †Heteraulacacysta
 * Heterodontus
 * †Heterodontus lerichei
 * †Heterotorpedo
 * †Heterotorpedo fowleri
 * Hexanchus
 * Hiatella
 * †Hiatella arctica
 * Hipponix
 * †Hipponix pygmaeus
 * Hippoporidra
 * †Hippoporidra calcarea
 * Hippoporina
 * †Hippoporina porosa
 * Homogalax tapirinus.JPG †[[Homogalax]] – or unidentified related form
 * Hydrobia
 * †Hydrobia truncata
 * 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
 * Orchard Oriole by Dan Pancamo 1.jpg †[[Icterus spurius]]
 * Ilyanassa
 * †Ilyanassa arata
 * †Ilyanassa granifera
 * †Ilyanassa obsoleta
 * †Ilyanassa procina
 * †Ilyanassa trivittata
 * †Iodes
 * †Iodes multireticulata
 * Ischadium
 * †Ischadium recurvum
 * Isistius
 * †Isistius trituratus
 * †Isognomen
 * †Isognommen
 * Isognomon
 * †Isognomon maxilliata
 * †Isognomon maxilliatus
 * Istiophorus platypterus .jpg, or sailfish]] Istiophorus''
 * Isurus

J

 * †Jacquhermania
 * †Jacquhermania duponti
 * Junco
 * Junco hyemalis hyemalis CT2.jpg †[[Junco hyemalis]]

K

 * Kalolophus
 * †Kalolophus antillarum
 * †Kapalmerella
 * †Kapalmerella mortoni
 * Kentriodon BW.jpg †[[Kentriodon]]
 * †Kentriodon pernix
 * Kuphus
 * †Kuphus calamus
 * †Kuphus fistula
 * Kurtziella
 * †Kurtziella cerina

L

 * †Laevihastula
 * †Laevihastula simplex
 * Lagena
 * Rock Ptarmigan (Lagopus Muta).jpg, or rock ptarmigan]] †Lagopus''
 * †Lagopus mutus – or unidentified comparable form
 * Lamna
 * †Lamna obliqua
 * Lampropeltis
 * †Lampropeltis doliata
 * Larus
 * †Larus hyperboreus
 * Lasiurus
 * †Lasiurus borealis
 * Latirus
 * †Latirus marylandicus
 * Lepisosteus
 * †Leptomactra
 * †Leptomactra delumbis
 * †Leptophoca
 * †Leptophoca lenis
 * †Leptophoca proxima – or unidentified comparable form
 * †Leptoxis
 * †Leptoxis carinata
 * Lepus
 * Lepus americanus 5459 cropped.jpg †[[Lepus americanus]]
 * †Levifusus
 * †Levifusus trabeatus
 * Libinia
 * †Libinia dubia
 * †Libinia emarginata
 * †Limosa – or unidentified comparable form
 * Linga
 * †Linga amiantus
 * †Lingulodinium
 * †Lingulodinium machaerophorum
 * †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
 * †Littoraria irrorata
 * Lontra
 * LutraCanadensis fullres.jpg †[[Lontra canadensis]]
 * Lophius
 * †Lophius sagittidens
 * †Lophocysta – tentative report
 * Lophodytes
 * †Lophodytes cucullatus
 * 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
 * Calero Creek Trail Bobcat.jpg †[[Lynx rufus]] – or unidentified comparable form
 * Lyonsia
 * †Lyonsia hyalina

M

 * Macoma
 * Macoma balthica (habitus).jpg, or Baltic clam]] †Macoma balthica''
 * †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
 * MammothVsMastodon.jpg, or American mastodon (right), and a Mammuthus primigenius, or wooly mammoth (left)]] †Mammuthus primigenius''
 * Marevalvata
 * †Marevalvata tricarinata
 * †Margaritaria
 * †Margaritaria abrupta
 * Marginella
 * †Marginella bella
 * †Marginella denticulata
 * †Mariacolpus
 * †Mariacolpus plebeia
 * †Mariafusus
 * †Mariafusus marylandica
 * Marmota
 * [[File:Groundhog - Marmota monax, Leesylvania State Park, Woodbridge, Virginia cropped.jpg|thumb|upright|A living Marmota monax, or groundhog]] †[[Marmota monax]]
 * †Marvacrassatella
 * †Marvacrassatella cyclopterus
 * †Marvacrassatella marylandica
 * †Marvacrassatella surryensis
 * †Marvacrassatella turgidula
 * †Marvacrassatella undulata
 * †Marvacrassatella undulatus
 * †Marvacrassatella urbannaensis
 * †Marvacrassatella urbannensis
 * Massilina
 * Masticophis
 * †Masticophis flagellum
 * †Mclelannia
 * †Mclelannia aenigma
 * Megaceryle
 * †Megaceryle alcyon
 * Megalonyx wheatleyi - AMNH - DSC06327.JPG †[[Megalonyx]]
 * †Megalonyx jeffersonii
 * Megalops
 * Megaptera
 * †Megaptera expansa
 * Melanerpes
 * †Melanerpes carolinus
 * †Melanerpes erythrocephalus
 * Meleagris
 * †Meleagris gallopavo
 * Mellita
 * †Mellita aclinensis
 * †Mellita aclinus
 * Melospiza
 * †Melospiza melodia
 * Membranipora
 * †Membranipora tenuis
 * Membraniporella
 * †Membraniporella petasus – or unidentified comparable form
 * Mephitis
 * †Mephitis mephitis
 * Mercenaria
 * †Mercenaria campechiensis
 * †Mercenaria capax
 * †Mercenaria corrugata
 * †Mercenaria cuneata
 * †Mercenaria druidi
 * †Mercenaria inflata
 * LittleNeck clams USDA96c1862.jpg †[[Mercenaria mercenaria]]
 * †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 floridanum.jpg †[[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
 * Woodland Vole Microtus Pinetorum.jpg †[[Microtus pinetorum]]
 * †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 2.jpg †[[Molothrus ater]]
 * †Monotherium
 * †Monotherium wymani
 * Morus
 * †Morus bassanus
 * †Moxostoma
 * Mulinia
 * †Mulinia congesta
 * †Mulinia congregata
 * †Mulinia lateralis
 * †Multiporina
 * †Multiporina cornuta
 * Musculus
 * †Musculus lateralis
 * †Musculus virginica
 * Mustela
 * †Mustela americana
 * †Mustela nivalis
 * †Mustela richardsonii
 * †Mya
 * †Mya arenaria
 * †Mya wilsoni – tentative report
 * Myliobatis
 * †Myliobatis dixoni
 * †Myliobatis latidens
 * †Myliobatis striatus
 * Mylohyus nasutus.jpg †[[Mylohyus]]
 * †Mylohyus fossilis
 * Myochama
 * Myotis
 * †Myotis grisescens
 * †Myotis keenii
 * †Myotis lucifugus
 * Myriophyllum
 * Myrtea – tentative report
 * †Myrtea curta – or unidentified comparable form
 * †Myrtea uhleri
 * Mytilus
 * †Mytilus edulis

N

 * †Nannaria
 * †Nanogyra
 * †Nanogyra virgula
 * Napaeozapus
 * †Napaeozapus insignis
 * †Napeozapus
 * †Napeozapus insignis
 * Nassarius tiarula.jpg [[Nassarius]]
 * †Nassarius marylandica
 * †Nassarius peralta
 * Naticarius
 * Natrix
 * Nebrius
 * †Nebrius thielensis
 * Negaprion
 * Nemocardium
 * Neofiber
 * †Neofiber leonardi
 * †Neopanope
 * †Neopanope texana
 * Neogale
 * †Neogale frenata
 * †Neogale vison
 * Neotoma
 * Neotoma floridana smalli close.jpg †[[Neotoma floridana]]
 * Nerodia
 * †Nerodia sipedon
 * Neverita
 * †Neverita duplicatus
 * †Ninoziphius
 * †Ninoziphius platyrostris – or unidentified comparable form
 * †Nipa – or unidentified comparable form
 * †Nipa burtini
 * Niso
 * †Nocomis
 * Nocomis raneyi cropped.jpg †[[Nocomis raneyi]] – or unidentified comparable form
 * Noetia
 * †Noetia incile
 * Nonion
 * Nonionella
 * †Nonionella atlantica
 * Notidanus
 * †Notidanus primigenius
 * Notophthalmus
 * †Notophthalmus viridescens – or unidentified comparable form
 * Notorhynchus
 * 170121-Sevengill-02 DSC0627 (1).jpg, or broadnose sevengill shark]] Notorynchus''
 * †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
 * †Odobenus rosmarus
 * Odocoileus
 * †Odocoileus virginianus
 * Odontaspis
 * †Odontaspis macrota
 * †Odontaspis winkleri
 * Odontopteryx toliapica.jpg †[[Odontopteryx]] – tentative report
 * Odostomia
 * Oliva
 * †Oliva canaliculata
 * †Oliva carolinae
 * †Oliva sayana
 * Olivella
 * †Olivella mutica
 * Ondatra
 * †Ondatra zibethicus
 * Onthophagus
 * †Onthophagus janus – or unidentified comparable form
 * †Ontocetus – type locality for genus
 * †Ontocetus emmonsi – type locality for species
 * †Operculodinium
 * Opheodrys
 * †Opsanus
 * Orthoyoldia
 * †Orthoyoldia psammotaea
 * Brygmophyseter2.jpg †[[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
 * Megalodon scale.svg (sometimes Carcharodon or Otodus megalodon) with a whale shark (violet), great white shark (green), and anachronistic human (black) to scale]] †Otodus megalodon''
 * Otus
 * †Otus asio
 * †Oxyrhina
 * †Oxyrhina retroflexa
 * †Oxyura
 * †Oxyura jamaicensis

P

 * †Pachecoa
 * †Pachecoa decisa – or unidentified comparable form
 * †Pachecoa ellipsis
 * †Pachygaleus
 * †Pachygaleus lefevrei
 * †Palaeocystodinium
 * †Palaeocystodinium golzowense
 * †Palaeogaleus
 * †Palaeogaleus vincenti
 * †Palaeohypotodus
 * †Palaeohypotodus ratoti
 * Palaeophis maghrebianus life restoration cropped.jpg †[[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
 * †Panopeus herbstii
 * Panthera
 * Lion (Panthera leo) (30941994012) cropped.jpg †[[Panthera leo]]
 * Paraconcavus
 * †Paraconcavus neusensis
 * †Paraconcavus prebrevicalcar
 * †Paralbula
 * †Paralbula marylandica
 * †Paramya
 * †Paramya subovata
 * Parascalops
 * †Parascalops breweri
 * Parietobalaena yamaokai life restoration cropped.png †[[Parietobalaena]]
 * †Parietobalaena palmeri
 * †Parophisaurus
 * †Parophisaurus mccloskeyi – type locality for species
 * Parus
 * †Parus bicolor
 * Parvanachis
 * †Parvanachis obesa
 * Parvilucina
 * †Parvilucina crenulata
 * †Parvilucina multilineatus
 * †Parvilucina multistriata
 * Passerella
 * Passerella iliaca-001.jpg †[[Passerella iliaca]]
 * Pecten
 * †Pecten humphreysii
 * †Pecten marylandica
 * †Pecten perplanus
 * †Pecten seabeensis
 * †Pedalion
 * †Pedalion maxillatum
 * Pedioecetes
 * †Pedioecetes phasianellus
 * Pekania
 * †Pekania pennanti – or unidentified comparable form
 * Pelagornis chilensis EF.jpg †[[Pelagornis]]
 * †Pelocetus
 * †Pelocetus calvertensis
 * †Pentadinium
 * †Pentadinium goniferum
 * †Pentadinium laticinctum
 * †Peradectes
 * †Peradectes guottai – type locality for species
 * †Perimyotis
 * †Perimyotis subflavus
 * Periploma
 * †Periploma leanum
 * Perisoreus
 * Perisoreus canadensis mercier2.jpg †[[Perisoreus canadensis]]
 * †Perisorus
 * †Perisorus canadensis
 * Peristernia
 * †Peristernia filicata
 * Peromyscus
 * †Peromyscus leucopus
 * †Peromyscus maniculatus
 * Petaloconchus
 * †Petaloconchus graniferus
 * †Petaloconchus virginica
 * †Petriathyris
 * Petricola
 * †Petricola pholadiformis
 * Petrochelidon
 * †Petrochelidon pyrrhonota
 * †Petrocheliodon
 * †Petrocheliodon pyrrhonota
 * †Phalacrocoras
 * †Phalacrocoras auritus
 * Phalacrocorax
 * Phalacrocorax-auritus-007.jpg †[[Phalacrocorax auritus]]
 * †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
 * †Physa heterostropha
 * †Physogaleus
 * †Physogaleus contortus
 * †Physogaleus secundas
 * †Phytolacca
 * †Phytolacca decandra
 * Pica
 * †Pica pica
 * Picea
 * †Pinguinus
 * [[File:Great Auk (Pinguinis impennis) specimen, Kelvingrove, Glasgow - geograph.org.uk - 1108249 cropped.jpg|thumb|upright=0.5|Taxidermied specimen of Pinguinus impennis, or the great auk]] †[[Pinguinus impennis]]
 * Pinicola – or unidentified comparable form
 * †Pinicola enucleator
 * †Pinquinus
 * †Pinquinus impennis
 * Pinus
 * †Pipestrellus
 * †Pipestrellus subflavus
 * Pipistrellus
 * †Pipistrellus subflavus
 * 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 leptorhinus cropped.png of the genus Platygonus. Charles R. Knight (1922).]] †Platygonus
 * †Platygonus compressus
 * †Platygonus vetus
 * Plecotus
 * †Plecotus townsendii – or unidentified comparable form
 * †Pleiorytis
 * †Pleiorytis centenaria
 * Pleuromeris
 * †Pleuromeris tridentata
 * Plicatula
 * †Plicatula filamentosa
 * †Plicatula gibbosa
 * Pluvialis
 * †Pluvialis dominica
 * Podiceps
 * Horned grebe (2) - (Podiceps auritus).JPG †[[Podiceps auritus]]
 * Podilymbus
 * †Podilymbus podiceps
 * Pogonias
 * †Pogonias multidentatus – type locality for species
 * Polinices
 * †Polinices aratus
 * Polydora
 * Polygonum
 * †Pomatiopsis
 * †Pomatiopsis lapidaria
 * †Pooecetes
 * †Pooecetes gramineus
 * Poroeponides
 * †Poroeponides lateralis
 * †Poroeponides repanda – or unidentified comparable form
 * Porzana
 * †Porzana carolina
 * †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
 * †Procyon lotor
 * †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 NT small cropped.png †[[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 platessus.jpg [[Pycnodus]]
 * †Pyropsis

Q

 * Eiche bei Schönderling, 2.jpg [[Quercus]]
 * Quinqueloculina
 * †Quinqueloculina compta
 * †Quinqueloculina jugosa
 * †Quinqueloculina lamarckiana
 * †Quinqueloculina lamarkiana
 * †Quinqueloculina microcosta
 * †Quinqueloculina peyana
 * †Quinqueloculina poeyana
 * †Quinqueloculina seminula

R

 * Raeta
 * †Raeta plicatella
 * Raja
 * Rallus
 * †Rallus limicola
 * †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
 * Reinbukken på frisk grønt beite. - panoramio cropped.jpg †[[Rangifer tarandus]]
 * 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
 * †Retusa obtusa
 * †Rhabdosteus
 * †Rhaphoneis
 * †Rhaphoneis gemmifera
 * †Rhaphoneis parilis
 * †Rhegnopsis
 * †Rhegnopsis palaeatlantica – type locality for species
 * Rhinobatos
 * †Rhinobatos bruxelliensis
 * Rhinoptera steindachneri.jpg [[Rhinoptera]]
 * †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 -Owen Conservation Park, Madison, Wisconsin, USA-8.jpg †[[Sayornis phoebe]]
 * †Scala
 * †Scala virginiana – type locality for species
 * †Scalaspira – report made of unidentified related form or using admittedly obsolete nomenclature
 * †Scalaspira strumosa
 * Scalopus
 * †Scalopus aquaticus
 * Scaphella
 * Scaphiopus
 * †Scaphiopus holbrooki
 * Sceloporus
 * †Sceloporus undulatus
 * †Sceptrum
 * †Sceptrum marylandicum
 * Cyrtodelphis sulcatus.JPG †[[Schizodelphis]]
 * †Schizodelphis barnesi
 * †Schizodelphis sulcatus
 * Schizoporella
 * †Schizoporella errata
 * Sciaenops
 * †Sciaenops ocellatus
 * †Sciaenurus – or unidentified comparable form
 * †Sciaenurus bowerbanki
 * Sciuropterus
 * †Sciuropterus volans
 * Sciurus
 * Eastern Grey Squirrel.jpg †[[Sciurus carolinensis]]
 * Scolopax
 * †Scolopax minor
 * Scomberomorus
 * †Scomberomorus bleekeri
 * †Scombrinus
 * Scyliorhinus
 * †Scyliorhinus gilberti
 * Seila
 * †Seila adamsii
 * †Seiurus
 * Semele
 * †Semele bellastriata
 * †Semele purpurascens – or unidentified comparable form
 * †Semele subovata
 * †Semotilus
 * †Semotilus corporalis – or unidentified comparable form
 * Serpulorbis
 * †Serpulorbis granifera
 * †Serpulorbis granulifera
 * Cretoxyrhinidae - Serratolamns gasfana cropped.jpg †[[Serratolamna]]
 * †Serratolamna aschersoni
 * †Serratolamna lerichei
 * †Sialia – or unidentified comparable form
 * †Sialia sialis
 * Sinum
 * †Sinum fragilis
 * †Siphonocetus
 * †Siphonocetus priscus – type locality for species
 * Sitta
 * †Sitta canadensis
 * †Solarium
 * Solemya
 * †Solemya velum
 * Solen
 * Solenosteira
 * †Solenosteira cancellaria
 * Sorex
 * †Sorex arcticus
 * †Sorex cinereus
 * †Sorex dispar
 * †Sorex fumeus
 * †Sorex hoyi
 * Northern water shrew with young.jpg †[[Sorex palustris]]
 * †Spatangus
 * †Spatangus glenni
 * Spermophilus
 * †Spermophilus tridecemlineatus
 * Sphaerium
 * †Sphaerium striatinum
 * †Sphaeroidinellopsis
 * †Sphaeroidinellopsis subdehiscens
 * Sphenia
 * †Sphenia dubia
 * Sphyraena
 * †Sphyraena bognorensis
 * †Sphyrapicus
 * †Sphyrapicus varius
 * Hammerhead shark.jpg [[Sphyrna]]
 * Spilogale
 * †Spilogale putorius
 * †Spirodon
 * †Spirodon carinata
 * Spisula
 * †Spisula modicella
 * †Spisula parilis
 * †Spisula praetenuis
 * †Spisula rappahannockensis
 * Squalodon BW.jpg †[[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
 * Odontaspididae - Striatolamia whitei.JPG †[[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 (21315229532).jpg †[[Sylvilagus transitionalis]]
 * Symplocos
 * †Symplocos grimsleyi
 * Synaptomys
 * †Synaptomys cooperi
 * †Synaptomys corealis

T

 * Tagelus
 * †Tagelus plebeius
 * Tamias
 * †Tamias striatus
 * †Tamiasciurius
 * †Tamiasciurius hudsonicus
 * Tamiasciurus
 * †Tamiasciurus hudsonicus
 * †Tamiasciurus tenuidens – or unidentified comparable form
 * South American tapir (Tapirus terrestris).JPG [[Tapirus]]
 * †Tapirus veroensis
 * Tautoga
 * †Tautoga onitis
 * †Tectatodinium
 * †Tectatodinium pellitum
 * Tectonatica
 * †Tectonatica pusilla
 * Teinostoma
 * †Teinostoma harrisi
 * †Teinostoma umbilicatum
 * Tellina fabula.jpg [[Tellina]]
 * †Tellina declivis
 * †Tellina leana
 * †Tellina propetenella
 * †Tellina virginiana – type locality for species
 * †Tellina williamsi
 * †Teratichthys
 * †Teratichthys antiquitatus
 * Terebra
 * Teredo
 * †Teredo virginiana
 * Terrapene
 * †Terrapene carolina
 * Textularia
 * †Thalassiphora
 * †Thalassiphora pelagica
 * Thamnophis
 * †Thamnophis sirtalis
 * Thecachampsa carolinensis cropped.jpg †[[Thecachampsa]]
 * †Thecachampsa antiqua
 * †Thecachampsa antiquua
 * †Thinocetus – type locality for genus
 * †Thinocetus arthritus – type locality for species
 * †Thoracosaurus
 * †Thoracosaurus neocesariensis
 * Thracia
 * †Thuja
 * †Thuja occidentalis
 * Yellowfin tuna nurp.jpg [[Thunnus]]
 * Tilia
 * Tinospora
 * †Tinospora folmerii
 * Torcula
 * †Torcula variabilis
 * †Tornatellaea
 * Toxostoma
 * †Toxostoma rufum
 * Transennella
 * †Transennella carolinensis
 * †Tretosphys
 * Triakis
 * †Triakis wardi
 * Trigonostoma
 * Tringa – or unidentified comparable form
 * †Tringa solitaria
 * †Triodopsis
 * †Triodopsis albolabris
 * †Triodopsis burchi
 * †Triodopsis juxtidens
 * Triodopsis tridentata.jpg †[[Triodopsis tridentata]]
 * †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
 * †Turdus migratorius
 * Turritellatricarinata.jpg [[Turritella]]
 * †Turritella alticostata
 * †Turritella humerosa
 * †Turritella invariabilis
 * †Turritella nasuta
 * †Turritella pilsbryi
 * †Turritella potomacensis
 * †Turritella praecincta
 * †Turritella subvariabilis

U

 * Uria
 * Common Murre Uria aalge.jpg †[[Uria aalge]]
 * Urosalpinx
 * †Urosalpinx cinera
 * †Urosalpinx cinerea
 * †Urosalpinx phrikina
 * †Urosalpinx rusticus
 * †Urosalpinx subrusticus
 * †Urosalpinx trossulus
 * Ursus
 * †Ursus americanus

V

 * Vallonia
 * †Vallonia costata
 * Valvata
 * Venericardia
 * †Venericardia densata
 * †Venericardia planicosta
 * †Venericardia potapacoensis
 * †Venericardia regia
 * Vermetus
 * Vertigo
 * †Vertigo gouldi
 * †Vertigo tridentata
 * Vitis
 * Vitrinella
 * †Vitrinella virginiensis
 * †Vokesinotus
 * †Vokesinotus lepidotus
 * [[File:Voltaconger latispinus - National Museum of Natural History - IMG 1959 cropped.jpg|thumb|upright=1|Fossilized skeleton of the Eocene bony fish Voltaconger]] †[[Voltaconger]]
 * †Voltaconger latispinus
 * Voluta
 * †Voluta mutabilis
 * Volutifusus
 * †Volutifusus obtusa
 * Vulpes

W

 * †Wetherellia
 * †Wetherellia marylandica
 * †Wetzeliella

X

 * Xenophora
 * Xiphiacetus sp.jpg †[[Xiphiacetus]]
 * †Xiphiacetus bossi – type locality for species
 * †Xiphiacetus cristatus – type locality for species

Y

 * Yoldia
 * †Yoldia laevis
 * Yoldia limatula illustration.png †[[Yoldia limatula]]
 * †Yoldia potomacensis

Z

 * Zapus
 * †Zapus hudsonius
 * †Zarhachis
 * Zonotrichia
 * Zonotrichia albicollis CT1.jpg †[[Zonotrichia albicollis]]