List of the prehistoric life of Maryland

This list of the prehistoric life of Maryland contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Maryland.

Precambrian

The Paleobiology Database records no known occurrences of Precambrian fossils in Maryland.

Paleozoic

Main article: List of the Paleozoic life of Maryland

Selected Paleozoic taxa of Maryland

• †Amphiscapha
• †Amplexopora
• †Archimylacris
• †Atrypa
  • †Atrypa reticularis – report made of unidentified related form or using admittedly obsolete nomenclature
• †Aviculopecten
• †Bassipterus
• †Bellerophon

• 

  Fossil of the Early Ordovician-Early Devonian trilobite Calymene

  †Calymene
  • †Calymene camerata
  • †Calymene cresapensis
  • †Calymene niagarensis – or unidentified comparable form
• †Camarotoechia
  • †Camarotoechia andrewsi
  • †Camarotoechia litchfieldensis
  • †Camarotoechia tonolowayensis
• †Chonetes
  • †Chonetes novascoticus
• †Cincinnetina
  • †Cincinnetina multisecta
• †Clitendoceras
• †Composita
  • †Composita ovata – tentative report
• †Cornulites
• †Cypricardinia
  • †Cypricardinia elegans
• †Dakeoceras

• 

  Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites

  †Dalmanites
  • †Dalmanites limulurus
• †Dolichopterus
• †Edmondia
• †Eldredgeops
  • †Eldredgeops rana
• †Ellesmeroceras
• †Encrinurus
• †Eospirifer
• †Erettopterus – tentative report
• †Euomphalus
• †Eurypterus
  • †Eurypterus remipes
• †Favosites
  • †Favosites niagarensis – or unidentified comparable form
• †Flexicalymene
• †Goniatites
• †Gyrodoma
• †Hallopora
• †Holopea
• †Hyolithes
• †Isotelus
• †Lingula

• 

  Life restoration of the Permian snake-like amphibian Lysorophus showing speculative egg-coiling behavior

  †Lysorophus
• †Mcqueenoceras
• †Megamolgophis
• †Meristina
• †Metacoceras
• †Naticopsis
• †Neospirifer
  • †Neospirifer dunbari – tentative report
• †Obolella
• †Obolus – tentative report
• †Olenellus
• †Ormoceras
• †Orthoceras
• †Platyceras
• †Proterocameroceras

• 

  Life restoration of the Silurian-Middle Devonian eurypterid ("sea scorpion") Pterygotus

  †Pterygotus
• †Ribeiria
• †Rioceras
• Solemya
• † Solenopsis
• †Sowerbyella
• †Spirifer
  • †Spirifer vanuxemi
• †Stenosiphon
• †Strophomena
• †Tainoceras

• 

  Assemblage of fossilized shells of the Early Ordovician-Late Devonian probable mollusc Tentaculites

  †Tentaculites
• †Trigonocera
• †Trimerus
• †Waeringopterus
• †Worthenia

Mesozoic

Main article: List of the Mesozoic life of Maryland

Selected Mesozoic taxa of Maryland

• Acirsa

• 

  Life restoration of the Early Cretaceous theropod dinosaur Acrocanthosaurus

  †Acrocanthosaurus – or unidentified comparable form
• †Acteon
• †Aenona
• †Agerostrea
• †Allognathosuchus – or unidentified comparable form
• †Allosaurus
• †Amyda
• †Ancilla
• †Anomia
• †Anomoeodus
• Arrhoges
• Astarte

• 

  Life restoration of the Early Cretaceous sauropod dinosaur Astrodon

  †Astrodon
  • †Astrodon johnstoni – type locality for species
• †Baculites
  • †Baculites baculus
• †Bottosaurus
  • †Bottosaurus harlani
• Botula
  • †Botula conchafodentis
  • †Botula ripleyana
• Cadulus
• Caestocorbula
  • †Caestocorbula crassaplica
  • †Caestocorbula crassiplica
  • †Caestocorbula percompressa
  • †Caestocorbula terramaria
• Carcharias
• †Caveola

• 

  Life restoration of the Late Triassic-Eocene lungfish Ceratodus

  †Ceratodus
• Cerithium
• Chiloscyllium
• †Cimoliasaurus
• †Coelosaurus
  • †Coelosaurus affinis
  • †Coelosaurus antiquus
• †Coelurus
  • †Coelurus gracilis – type locality for species
• †Corax
• Corbula
• †Crenella
  • †Crenella elegantula
  • †Crenella serica

• 

  Fossil of the Early Cretaceous-Eocene shark Cretolamna

  †Cretolamna
  • †Cretolamna appendiculata
• Cucullaea
  • †Cucullaea capax
• Cuspidaria
  • †Cuspidaria ampulla
• Cylichna
  • †Cylichna diversilirata
  • †Cylichna incisa
• †Cylindracanthus
• †Cymella
• Dasyatis

• 

  Life restoration of the Early Cretaceous dromaeosaur ("raptor") Deinonychus

  †Deinonychus
  • †Deinonychus antirrhopus
• †Deinosuchus
  • †Deinosuchus rugosus
• †Dentalium
  • †Dentalium leve
• †Discoscaphites
  • †Discoscaphites conradi
  • †Discoscaphites gulosus
  • †Discoscaphites iris
• †Egertonia
• †Enchodus
  • †Enchodus dirus
• †Eulima
  • †Eulima monmouthensis
• †Euspira

• 

  Illustration in multiple views of a fossilized shell of the Late Jurassic-Miocene nautiloid cephalopod Eutrephoceras

  †Eutrephoceras
• †Ewingia
• †Exogyra
  • †Exogyra costata
• Galeorhinus
• Ginglymostoma
• Glossus
• Glycimeris
• Glycymeris
  • †Glycymeris rotundata
• †Glyptops
• †Goniopholis

• 

  Fossil negative with skin impressions of the theropod dinosaur footprint ichnogenus Grallator

  †Grallator – or unidentified comparable form
• †Halisaurus
  • †Halisaurus platyspondylus
• †Hamatia – type locality for genus
• †Hamulus
• Heterodontus
• † Heteromorpha
• †Hoploparia
• †Hybodus
• †Hyposaurus
  • †Hyposaurus rogersii
• †Inoceramus
• †Ischyodus
• †Ischyrhiza
  • †Ischyrhiza avonicola – or unidentified comparable form
  • †Ischyrhiza mira

• 

  Fossilized shell of the Late Cretaceous ammonoid cephalopod Jeletzkytes

  †Jeletzkytes
  • †Jeletzkytes nebrascensis
• Latiaxis
• Lepisosteus
• Lima
• Limatula
• †Linearis
• Lithophaga
• Lopha
  • †Lopha falcata
  • †Lopha mesenterica
• †Mathilda
• †Modiolus
  • †Modiolus sedesclaris
  • †Modiolus sedesclarus
  • †Modiolus trigonus
• †Morea

• 

  Life restoration of two of the Late Cretaceous Mosasaurus

  †Mosasaurus
  • †Mosasaurus conodon
• Myliobatis
• †Mytilus – tentative report
• Nebrius
• Nucula
  • †Nucula camia
  • †Nucula cuneifrons
  • †Nucula percrassa
  • †Nucula severnensis

• 

  A living Odontaspis sand shark

  Odontaspis
• †Osteopygis
• Panopea
• †Paralbula
• †Peritresius
• Pholas
• †Pinna
• †Placenticeras
• †Pleurocoelus – type locality for genus
  • †Pleurocoelus nanus – type locality for species
• †Plicatoscyllium
• Polinices

• 

  Illustration of a fossilized tooth in multiple views of the Early Cretaceous armored dinosaur Priconodon

  †Priconodon – type locality for genus
  • †Priconodon crassus – type locality for species
• †Prognathodon
  • †Prognathodon rapax
• †Propanoplosaurus – type locality for genus
  • †Propanoplosaurus marylandicus – type locality for species
• †Protocardia
• †Pteria
• †Pterotrigonia
  • †Pterotrigonia eufalensis
  • †Pterotrigonia eufaulensis
  • †Pterotrigonia thoracica
• †Ptychotrygon
• Pycnodonte
  • †Pycnodonte vesicularis
• Raja
• Rhinobatos

• 

  Restoration of the Late Cretaceous-Paleocene ray Rhombodus

  †Rhombodus
• Ringicula
  • †Ringicula clarki
  • †Ringicula pulchella
• Rissoina
• †Sargana
• †Scaphites
  • †Scaphites hippocrepis
• Serpula
• †Serratolamna
  • †Serratolamna serrata
• †Sphenodiscus
  • †Sphenodiscus lobatus
  • †Sphenodiscus pleurisepta

• 

  Life restoration of the Late Cretaceous shark Squalicorax

  Squalicorax
  • †Squalicorax falcatus
  • †Squalicorax kaupi
  • †Squalicorax pristodontus
• Squatina
• †Stephanodus
• Tellina
• †Tenea

• 

  Life restoration of the Early Cretaceous Iguanodon relative Tenontosaurus

  †Tenontosaurus
• †Thoracosaurus
• Trachycardium
  • †Trachycardium eufaulensis
• Turritella
  • †Turritella bilira
  • †Turritella hilgardi
  • †Turritella paravertebroides
  • †Turritella tippana
  • †Turritella trilira
  • †Turritella vertebroides

Cenozoic

Main article: List of the Cenozoic life of Maryland

Selected Cenozoic taxa of Maryland

• †Abra – tentative report
• Acipenser
• Acropora
  • †Acropora palmata
• Acteocina
• Acteon
• †Acus
• †Adocus

• 

  Life restoration of the Miocene camel Aepycamelus, or the long-necked camel. Heinrich Harder (1920).

  †Aepycamelus – tentative report
• Aetobatus
• †Aglaocetus
• Alca
  • †Alca torda – or unidentified comparable form
• †Ambystoma
  • †Ambystoma maculatum
  • †Ambystoma tigrinum
• Amia

• 

  Life restoration of the Miocene-Pliocene beardog Amphicyon

  †Amphicyon
• Amyda
• Anachis
• Anadara
  • †Anadara ovalis
  • †Anadara transversa
• Anas
  • †Anas crecca
• Ancilla – report made of unidentified related form or using admittedly obsolete nomenclature
• Angulus
• Anomia
  • †Anomia simplex
• Anticlimax – tentative report
• †Aphelops – tentative report
• Aporrhais
• Aquila
  • †Aquila chrysaetos
• †Araeodelphis – type locality for genus
• Arca
• †Archaeohippus
• Architectonica
• †Arctodus
  • †Arctodus pristinus
• Argopecten
  • †Argopecten irradians
• †Armatobalanus

• 

  Shell of a modern Astarte bivalve

  Astarte
  • †Astarte undata
• Asterias
  • †Asterias forbesi – or unidentified comparable form
• Astrangia
  • †Astrangia danae
• †Astroscopus – type locality for species
  • †Astroscopus countermani – type locality for species
• Astyris
  • †Astyris lunata
• Athleta
• Atrina

• 

  Life restoration of the Miocene sperm whale Aulophyseter

  †Aulophyseter
• Balaenoptera
• Balanus
  • †Balanus crenatus
• Bankia
• Barnea
• Blarina
  • †Blarina brevicauda
  • †Blarina carolinensis
• Bonasa

  • 

    A living Bonasa umbellus, or ruffed grouse

    †Bonasa umbellus
• Boreotrophon
• Brachidontes
• †Brachyprotoma
  • †Brachyprotoma obtusata
• †Brevoortia
  • †Brevoortia tyrannus – or unidentified comparable form
• Bufo
  • †Bufo americanus
  • †Bufo woodhousei
• Busycon – type locality for genus
  • †Busycon carica
• Busycotypus
  • †Busycotypus canaliculatus
• Cadulus
• Caecum
• Callinectes
  • †Callinectes ornatus

  • 

    A living Callinectes sapidus, or Chesapeake blue crab

    †Callinectes sapidus
• Calliostoma
• Callista
• Calonectris
• Calyptraea
  • †Calyptraea centralis
• Cancellaria
• Cancer
  • †Cancer irroratus
• Canis

  • 

    Illustration in multiple views of a fossilized skull of the Pleistocene Canis armbrusteri, or Armbruster's wolf

    †Canis armbrusteri – type locality for species
  • †Canis latrans
  • †Canis rufus – or unidentified comparable form
• Cantharus
• Carcharhinus
• Carcharias
• Carcharodon
  • †Carcharodon hastalis
• Cardita
• Carphophis
  • †Carphophis amoenus
• Cassis
• Castor
  • †Castor canadensis
• †Cephalotropis – type locality for genus
• Cerastoderma
• Cervus
• Cetorhinus

• 

  Life restoration of the Miocene-Pliocene whale Cetotherium

  †Cetotherium
• Chama
• Chelone
• Chelydra
  • †Chelydra serpentina
• †Chesapecten
  • †Chesapecten jeffersonius
• Chlamys
• Chrysemys
  • †Chrysemys picta
• Circulus – report made of unidentified related form or using admittedly obsolete nomenclature
• Cirsotrema
• Clavus
• Clementia
• Clethrionomys
  • †Clethrionomys gapperi – or unidentified comparable form
• Cliona
• Coluber

  • 

    A living Coluber constrictor, or eastern racer

    †Coluber constrictor
• Concavus
• Condylura
  • †Condylura cristata
• Conus
• Corbula
• Crassostrea
  • †Crassostrea virginica
• Crepidula
  • †Crepidula fornicata
  • †Crepidula plana

• 

  Fossil of the Early Cretaceous-Eocene shark Cretolamna

  †Cretolamna
  • †Cretolamna appendiculata
• Crotalus
  • †Crotalus horridus
• Crucibulum
• Cryptobranchus
• Cucullaea
• Cumingia
• Cyclocardia
• Cylichna
• Cymatosyrinx
• †Cynarctus
  • †Cynarctus wangi – type locality for species

• 

  Multiple views of a shell of a Cypraea cowrie sea snail

  Cypraea
  • †Cyrtopleura costata
• Cythara
• †Cytheris
• Dasyatis
• Dentalium
• Diadophis
  • †Diadophis punctatus
• Diodora
• †Diorocetus – type locality for genus
• †Dipoides
• Discinisca
• †Dolicholatirus
• Dosinia
• Echinocardium
• Echinophoria – type locality for genus
• †Ecphora

  • 

    Illustration of a fossilized shell of the Miocene murex sea snail Ecphora gardnerae

    †Ecphora gardnerae
• †Ectopistes
  • †Ectopistes migratorius
• Elaphe
  • †Elaphe vulpina
• Electra
• Elphidium
• Ensis
  • †Ensis directus
• †Entobia
• †Eosuchus
• †Eosurcula – or unidentified comparable form
• Epitonium
  • †Epitonium humphreysii
• Eptesicus
  • †Eptesicus fuscus – or unidentified comparable form
• Equus
  • †Equus giganteus
• Erethizon
  • †Erethizon dorsatum

• 

  Life restoration of the Pleistocene bovid Euceratherium, or the shrub ox. Robert Bruce Horsfall (1913).

  †Euceratherium
  • †Euceratherium collinum
• †Euclastes – tentative report
• Eulima
• Eumeces
  • †Eumeces fasciatus – or unidentified comparable form
• Eupleura
  • †Eupleura caudata
• †Eurhinodelphis
  • †Eurhinodelphis longirostris
• Euspira
  • †Euspira heros

• 

  A living Felis, or cat

  Felis
• †Ficopsis
• Fissurella
• †Fistulobalanus
• †Fulgar
• Galeocerdo
  • †Galeocerdo aduncus
  • †Galeocerdo contortus
• Galeodea
• Gari
• Gastrochaena
• Gavia
  • †Gavia immer

• 

  Fossilized skull of the Miocene crocodile relative Gavialosuchus

  †Gavialosuchus
• Gegania
• Gemma
  • †Gemma gemma
• Genota – or unidentified comparable form
• Geukensia
  • †Geukensia demissa
• Gibbula – tentative report
• Glaucomys
• Globigerina
• Globigerinoides
• Glossus
• Glycimeris
• Glycymeris
  • †Glycymeris americana
• Glyptemys
  • †Glyptemys muhlenbergii

• 

  Mounted fossilized skeleton of the Miocene-Pleistocene elephant relative Gomphotherium

  †Gomphotherium
• Gulo
  • †Gulo gulo
• Gyrinophilus
  • †Gyrinophilus porphyriticus – or unidentified comparable form
• †Hadrodelphis – type locality for genus
• Haminoea
• Hastula
• Haustator
• †Heliadornis – type locality for genus
• Hemipristis
  • †Hemipristis serra
• Heterodon
  • †Heterodon platyrhinos – or unidentified comparable form
• Hiatella
  • †Hiatella arctica

• 

  Mounted fossilized skeleton of the Miocene-Pliocene horse Hippotherium

  †Hippotherium
• Hyla
  • †Hyla crucifer
• Hyotissa
• Ictalurus
• Ilyanassa
  • †Ilyanassa obsoleta
  • †Ilyanassa trivittata
• Ischadium
  • †Ischadium recurvum
• †Ischyodus
• Isognomon
• Isurus

• 

  Life restoration of the Oligocene-Miocene dolphin Kentriodon

  †Kentriodon – type locality for genus
• Kuphus – report made of unidentified related form or using admittedly obsolete nomenclature
• Kurtziella
  • †Kurtziella cerina
• Lacuna
• †Lagodon
• Lamna
• Lampropeltis
  • †Lampropeltis triangulum
• Lasiopodomys
• Lepisosteus
• †Leptophoca – type locality for genus
  • †Leptophoca lenis – type locality for species
• Lepus
  • †Lepus americanus
• Libinia
  • †Libinia dubia
• Lithophaga – or unidentified comparable form
• Littoraria
  • †Littoraria irrorata
• Lontra

  • 

    Pair of living Lontra canadensis, or North American river otter

    †Lontra canadensis
• †Lophocetus
• Lopholatilus
• Lucina
• Lunatia
• Lyonsia
• Macoma
  • †Macoma balthica
• Macrocallista
• †Macrokentriodon – type locality for genus
• †Mammut
  • †Mammut americanum
• †Mammuthus
  • †Mammuthus columbi

  • 

    Life restorations of a Mammut americanum, or American mastodon (right), and a Mammuthus primigenius, or wooly mammoth (left)

    †Mammuthus primigenius
• Marginella
• Marmota
  • †Marmota monax
• Martesia
• Mathilda
• †Megalonyx
• Megaptera
• Melampus
  • †Melampus bidentatus
• Melanitta
  • †Melanitta deglandi
• Meleagris

  • 

    A wild male Meleagris gallopavo, or turkey, displaying his facial coloration and tail feathers to attract a female

    †Meleagris gallopavo
• Membranipora
• Menestho
• Mephitis
  • †Mephitis mephitis
• Mercenaria
  • †Mercenaria mercenaria
• Meretrix
• †Merychippus
• †Mesocetus
• †Metaxytherium
• Microtus
  • †Microtus chrotorrhinus – or unidentified comparable form
  • †Microtus pennsylvanicus

• 

  Restoration of the Pliocene-Pleistocene Miracinonyx, or American cheetah

  †Miracinonyx
  • †Miracinonyx inexpectatus
• Mitra
• Modiolus
  • †Modiolus modiolus
• †Moira – tentative report
• †Monotherium
• Mulinia
  • †Mulinia lateralis
• Mustela
  • †Mustela vison – or unidentified comparable form
• †Mya
  • †Mya arenaria
• Myliobatis

• 

  Fossilized skeleton of the Pliocene-Holocene peccary Mylohyus

  †Mylohyus
  • †Mylohyus fossilis – type locality for species
• Myodes
• Myotis
  • †Myotis grisescens – or unidentified comparable form
• Mytilus
• †Nanosiren – tentative report
• Napaeozapus
  • †Napaeozapus insignis
• Narona
• Nassa

• 

  A living Nassarius, or nassa mud snail

  Nassarius
  • †Nassarius vibex
• Neofiber
• Neotoma – type locality for genus
  • †Neotoma floridana
• Nerodia
  • †Nerodia sipedon
• Neverita
• Notophthalmus
  • †Notophthalmus viridescens – or unidentified comparable form
• Notorynchus

  • 

    Close-up portrait of a living Notorynchus cepedianus, or broadnose sevengill shark

    †Notorynchus cepedianus – type locality for species
• Novocrania
• Nucula
  • †Nucula proxima
  • †Nuculana acuta
• Ochotona
  • †Ochotona princeps – or unidentified comparable form
• Odocoileus
  • †Odocoileus virginianus
• Odontaspis
• Odostomia
• Ondatra
  • †Ondatra zibethicus
• Opheodrys
  • †Opheodrys vernalis
• †Orycterocetus
• †Osteopygis
• Ostrea
• †Otodus

  • 

    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

    †Otodus megalodon
• Otus
• †Oxyrhina
  • †Oxyrhina desorii
• Pagurus
  • †Pagurus pollicaris
• †Palaeocarcharodon
• †Palaeophis
• Pandora
• Panopea
• Panopeus
  • †Panopeus herbstii
• Panthera
  • †Panthera leo
  • †Panthera onca
• Parascalops
  • †Parascalops breweri

• 

  Life restoration of the Miocene baleen whale Parietobalaena and calf

  †Parietobalaena – type locality for genus
  • †Parietobalaena palmeri – type locality for species
• Pecten
• Pekania
• †Pelocetus – type locality for genus
• Perisoreus
  • †Perisoreus canadensis
• Peromyscus
  • †Peromyscus leucopus – or unidentified comparable form
• Petricola
  • †Petricola pholadiformis
• †Phenacodus – tentative report
• Phenacomys
• †Phocageneus
• Pholadomya
• †Physeterula
• Pinna
• Pipistrellus
• Pitar
  • †Pitar morrhuanus
• Pitymys
• Placopecten

• 

  Restoration of a herd of alarmed Miocene-Pleistocene peccaries of the genus Platygonus. Charles R. Knight (1922).

  †Platygonus
• Plecotus
• Plethodon
• Pleurotomella
• Pogonias
  • †Pogonias cromis – or unidentified comparable form
• Polydora
• Polystira
• †Presbyornis
• †Prionodon
• Prionotus
  • †Prionotus evolans – or unidentified related form
• Propebela
• Prophaethon – tentative report
• †Protocardia
• Pseudacris
  • †Pseudacris triseriata
• Pseudoliva
• Pteria
• †Ptychosalpinx

• 

  A living Puffinus shearwater

  Puffinus
• Pycnodonte
• Quinqueloculina
• †Rana
  • †Rana clamitans
  • †Rana pipiens
  • †Rana sylvatica
• Rangia
• Ranzania
• Retusa

• 

  A school of living Rhinoptera, or cownose rays

  Rhinoptera
• Rhynchobatus
• †Roccus
  • †Roccus saxatilis
• †Rotalia
• Salamandra
• †Scala – report made of unidentified related form or using admittedly obsolete nomenclature
• †Scala
• †Scaldicetus
• †Scapanorhynchus
• Scaphander
• Scaphella – type locality for genus
• Sceloporus
  • †Sceloporus undulatus – or unidentified comparable form

• 

  Fossilized skull of the Miocene toothed whale Schizodelphis

  †Schizodelphis
• Schizoporella
  • †Schizoporella unicornis
• Sciaenops
• Sciurus
  • †Sciurus carolinensis
• †Scutella
• †Sediliopsis – type locality for genus
• Seila
  • †Seila adamsii
• Semele – tentative report
• Semele
• Serpulorbis
• Siphonalia

• 

  Life restoration of the Pleistocene-Holocene saber-tooth cat Smilodon

  †Smilodon
  • †Smilodon fatalis
• †Solarium
• Solen
• Sorex
  • †Sorex cinereus
  • †Sorex fumeus
• Spermophilus
  • †Spermophilus tridecemlineatus
• †Sphyraenodus
• Sphyrna
• Spilogale
  • †Spilogale putorius – type locality for species
• Spisula

• 

  Life restoration of the Oligocene-Miocene shark-toothed dolphin Squalodon

  †Squalodon
  • †Squalodon calvertensis – type locality for species
• Squatina
• Squilla
  • †Squilla empusa
• Stewartia
• Stramonita
• Strioterebrum
• †Syllomus
• Sylvilagus
  • †Sylvilagus floridanus

• 

  Illustration of a living Synaptomys, or bog lemming

  Synaptomys
  • †Synaptomys cooperi
• Syrnola
• Tagelus
• Tamias
  • †Tamias striatus
• Tamiasciurus
  • †Tamiasciurus hudsonicus
• †Tapiravus

• 

  A living Tapirus, or tapir

  Tapirus
• †Tasbacka
• Taxidea
  • †Taxidea taxus – type locality for species
• Teinostoma
• Tellina
• Terebra
• Terebratula
• Teredo
• Terrapene
  • †Terrapene carolina
• Testudo
• Textularia
• Thamnophis

• 

  Fossilized skeleton of the Oligocene-Miocene gavial relative Thecachampsa

  †Thecachampsa
  • †Thecachampsa antiqua
• Thomomys – type locality for genus
• Thracia
• Tremarctos
  • †Tremarctos floridanus
• Triloculina
• Trionyx – report made of unidentified related form or using admittedly obsolete nomenclature
• Triphora
• Tritonium
• Trochita
• †Trygon
• †Tuba – tentative report
• Turricula – report made of unidentified related form or using admittedly obsolete nomenclature
• Turris – report made of unidentified related form or using admittedly obsolete nomenclature
• Turritella

• 

  A living Tursiops, or bottlenose dolphin

  Tursiops
• Typhis
• Umbraculum – tentative report
• Urosalpinx
  • †Urosalpinx cinerea
• Ursus
  • †Ursus americanus
• Venericardia
• Vespertilio
• Vitrinella
• Volutifusus
• Vulpes

• 

  Fossilized skeleton of the Miocene whale Xiphiacetus

  †Xiphiacetus
• Xiphias
• Yoldia
  • †Yoldia limatula

References

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 7 August 2017. {{cite web}}: |author= has generic name (help)