List of the Mesozoic life of Maryland

This list of the Mesozoic life of Maryland contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Maryland and are between 252.17 and 66 million years of age.

A[]

• Acirsa
  • † – or unidentified related form
  • †
  • †
• 

  Life restoration of the Early Cretaceous theropod dinosaur Acrocanthosaurus
  †Acrocanthosaurus – or unidentified comparable form
• †Acteon
  • †
• †
  • †
• †Aenona
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• †Agerostrea
  • †
• 

  Fossilized skeleton of the Late Cretaceous-Oligocene Alligator relative Allognathosuchus
  †Allognathosuchus – or unidentified comparable form
• †Allosaurus
  • † – type locality for species
• †
  • †
• • †
  • † – or unidentified comparable form
• 

  Assemblage of fossilized skeletons of the softshell turtle Amyda
  †Amyda
  • †
• †
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• †Ancilla
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• †
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• †Anomia
  • †
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• †Anomoeodus
  • †
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• †
• †
  • †
• †
  • †
• †
  • †
• † – type locality for genus
  • † – type locality for species
• †
  • † – type locality for species
• Arrhoges
• † – type locality for genus
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
• Astarte
  • †
• 

  Life restoration of the Early Cretaceous sauropod dinosaur Astrodon
  †Astrodon
  • †Astrodon johnstoni – type locality for species

B[]

• 

  Fossilized shell of the Late Cretaceous ammonoid cephalopod Baculites
  †Baculites
  • †Baculites baculus
  • †
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  • † – or unidentified comparable form
  • †
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• †Bottosaurus
  • †Bottosaurus harlani
• Botula
  • †Botula conchafodentis
  • †
  • †Botula ripleyana
• †
  • †

C[]

• Cadulus
  • †
• Caestocorbula
  • †Caestocorbula crassaplica
  • †Caestocorbula crassiplica
  • †Caestocorbula percompressa
  • †Caestocorbula terramaria
• †
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• Carcharias
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• †
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•  [fr; nl; sv]
• †Caveola
  • †
• 

  Life restoration of the Late Triassic-Eocene lungfish Ceratodus
  †Ceratodus
  • † – type locality for species
• Cerithium
  • † – or unidentified related form
• Chiloscyllium
  • †
• †Cimoliasaurus
  • †
• †
• †
  • †
  • †
• †Coelosaurus
  • †Coelosaurus affinis
  • 

    Illustration of a fossilized tibia of the Late Cretaceous theropod dinosaur Coelosaurus antiquus
    †Coelosaurus antiquus
• †Coelurus
  • †Coelurus gracilis – type locality for species
• †Corax
  • †
• Corbula
  • †
• † – or unidentified comparable form
  • †
• †
  • †
• Crassatella
  • †
• †Crenella
  • †Crenella elegantula
  • †Crenella serica
• †
  • † – or unidentified comparable form
  • †
• 

  Fossil of the Early Cretaceous-Eocene shark Cretolamna
  †Cretolamna
  • †Cretolamna appendiculata
  • † – or unidentified comparable form
• Cucullaea
  • †Cucullaea capax
• †
  • †
• †
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• Cuspidaria
  • †Cuspidaria ampulla
• †
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• Cylichna
  • †Cylichna diversilirata
  • †Cylichna incisa
• †Cylindracanthus
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• †Cymella
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• †
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D[]

• 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
• †
  • †
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E[]

• †Egertonia
• †
  • †
  • †
  • † – or unidentified comparable form
• 

  Restoration of the Early Cretaceous-Eocene bony fish Enchodus, or the "saber-toothed herring"
  †Enchodus
  • †Enchodus dirus
  • †
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• †
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• †Eulima
  • †
  • †Eulima monmouthensis
• †Euspira
  • †
  • †
• †Eutrephoceras
  • †
• †Ewingia
  • †
• 

  Interior of a fossilized shell of the Jurassic-Cretaceous foam oyster Exogyra
  †Exogyra
  • †Exogyra costata

F[]

• †
  • †
• †
  • † – or unidentified related form
• †
  • †
  • †
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G[]

• Galeorhinus
  • †
• Ginglymostoma
• Glossus
• Glycimeris
  • †
• Glycymeris
  • †Glycymeris rotundata
• †Glyptops
  • † – type locality for species
• †
• †Goniopholis
  • † – type locality for species
• 

  Fossil negative with skin impressions of the theropod dinosaur footprint ichnogenus Grallator
  †Grallator – or unidentified comparable form
• †
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• • †
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H[]

• †
• 

  Life restoration of the Late Cretaceous mosasaur Halisaurus
  †Halisaurus
  • †Halisaurus platyspondylus
• †Hamatia – type locality for genus
  • † – type locality for species
• †Hamulus
  • †
  • † – tentative report
  • †
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• †
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• †
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• Heterodontus
• †
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• 

  Fossil of the Jurassic-Paleogene lobster Hoploparia
  †Hoploparia
  • †
• †Hybodus
• †
  • †
• †Hyposaurus
  • †Hyposaurus rogersii
• †
• † – type locality for genus
  • † – type locality for species

I[]

• 

  Fossilized shell of the Early Jurassic-Late Cretaceous marine bivalve Inoceramus with a human indicating its size
  †Inoceramus
• †Ischyodus
• †Ischyrhiza
  • †Ischyrhiza avonicola – or unidentified comparable form
  • †Ischyrhiza mira

J[]

• †Jeletzkytes
  • †
  • †Jeletzkytes nebrascensis
• • †

L[]

• Laternula
  • †
• †
  • † – or unidentified comparable form
• 

  Shells in multiple views of Latiaxis coral sea snails
  Latiaxis
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• Lepisosteus
• †
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• Lima
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• Limatula
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• †Linearis
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• Lithophaga
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• 

  Fossilized shell of the Triassic-modern marine bivalve Lopha
  Lopha
  • †Lopha falcata
  • †Lopha mesenterica
• †
  • †
• † – type locality for genus
  • † – type locality for species
• †
• †
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• †
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M[]

• • †
  • †
  • †
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• †Mathilda
  • † – or unidentified comparable form
  • †
• † – type locality for genus
  • † – type locality for species
• †
  • †
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• †Mesostoma
• †
  • †
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• †Modiolus
  • †Modiolus sedesclaris
  • †Modiolus sedesclarus
  • †Modiolus trigonus
• †Morea
  • †
  • †
• 

  Life restoration of two of the Late Cretaceous Mosasaurus
  †Mosasaurus
  • †Mosasaurus conodon
  • †
  • †
• Myliobatis
  • †
• †
  • † – tentative report
• • †
• †Mytilus – tentative report

N[]

• †
  • †
• 

  Close-up portrait of a living Nebrius nurse shark
  Nebrius
• †
  • †
  • †
  • †
• †
  • † – or unidentified comparable form
• Nucula
  • †Nucula camia
  • †Nucula cuneifrons
  • †Nucula percrassa
  • †
  • †Nucula severnensis
  • †
• Nuculana
  • †
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• †
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O[]

• 

  A living Odontaspis sand shark
  Odontaspis
  • †
  • †
• †
  • † – or unidentified comparable form
• †
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• †Osteopygis
  • †

P[]

• †
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• Panopea
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• †Paralbula
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• †
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• †
  • † – type locality for species
• †
• †Peritresius
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• Pholas
• †Pinna
  • †
• 

  Fossilized shell of the Late Cretaceous ammonoid cephalopod Placenticeras
  †Placenticeras
  • †
  • †
• †
  • † – type locality for species
• † – type locality for genus
  • † – type locality for species
  • † – type locality for species
• †
  • †
• †Pleurocoelus – type locality for genus
  • † – type locality for species
  • †Pleurocoelus nanus – type locality for species
• †Plicatoscyllium
  • †
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• Polinices
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• †
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• †
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• †Priconodon – type locality for genus
  • †Priconodon crassus – type locality for species
• 

  Life restoration of the Late Cretaceous mosasaur Prognathodon preying upon an ammonoid cephalopod
  †Prognathodon
  • †Prognathodon rapax
• †
  • † – or unidentified comparable form
• †Propanoplosaurus – type locality for genus
  • †Propanoplosaurus marylandicus – type locality for species
• †
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• †Protocardia
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• †
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• • †
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• †Pteria
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• 

  Fossilized shell of the Jurassic-Cretaceous marine bivalve Pterotrigonia
  †Pterotrigonia
  • †Pterotrigonia eufalensis
  • †Pterotrigonia eufaulensis
  • †Pterotrigonia thoracica
• †Ptychotrygon
  • †
• †
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• Pycnodonte
  • †Pycnodonte vesicularis
• †
  • †
  • †
• †
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R[]

• Raja
  • †
• †
  • † – or unidentified comparable form
  • †
  • †
• †
  • †
  • † – or unidentified comparable form
  • †
• Rhinobatos
• 

  Restoration of the Late Cretaceous-Paleocene ray Rhombodus
  †Rhombodus
  • †
• †
• Ringicula
  • †Ringicula clarki
  • †Ringicula pulchella
• Rissoina
  • †

S[]

• †Sargana
  • †
• †
  • †
• 

  Fossilized shell of the Late Cretaceous ammonoid cephalopod Scaphites
  †Scaphites
  • †Scaphites hippocrepis
• Serpula
• †Serratolamna
  • †Serratolamna serrata
• † – tentative report
• †
  • † – or unidentified comparable form
• †Solyma
  • †
  • †
• †
  • † – tentative report
• †
  • †
• †Sphenodiscus
  • †Sphenodiscus lobatus
  • †Sphenodiscus pleurisepta
• 

  Life restoration of the Late Cretaceous shark Squalicorax
  Squalicorax
  • †Squalicorax falcatus
  • †Squalicorax kaupi
  • †Squalicorax pristodontus
• Squatina
  • †
• †
  • †
• †Stephanodus
• Striarca
  • †
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• †
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• †
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• †
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T[]

• Tellina
• †
  • †
  • †
• †Tenea
  • †
• 

  Life restoration of the Early Cretaceous Iguanodon relative Tenontosaurus
  †Tenontosaurus
• †
  • †
  • †
• †Thoracosaurus
  • †Thoracosaurus neocesariensis
• Trachycardium
  • †Trachycardium eufaulensis
• †
• 

  Fossilized shells of the Late Jurassic-modern tower snail Turritella
  Turritella
  • †Turritella bilira
  • †Turritella hilgardi
  • †Turritella paravertebroides
  • †Turritella tippana
  • †Turritella trilira
  • †Turritella vertebroides

U[]

• †
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V[]

• †
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• †
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• †

W[]

• †
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X[]

• †
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References[]

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021. {{cite web}}: |author= has generic name (help)