List of the prehistoric life of Maryland facts for kids

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

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

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
  • †Zephyrosaurus

Cenozoic

Selected Cenozoic taxa of Maryland

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