# 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

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* Acirsa
** †Acirsa americana – or unidentified related form
** †Acirsa clathrata
** †Acirsa flexicostata
* Life restoration of the Early Cretaceous theropod dinosaur Acrocanthosaurus †Acrocanthosaurus – or unidentified comparable form
* †Acteon
** †Acteon cicatricosus
* †Acutostrea
** †Acutostrea plumosa
* †Aenona
** †Aenona eufaulensis
** †Aenona georgiana
* †Agerostrea
** †Agerostrea mesenterica
* Fossilized skeleton of the Late Cretaceous-Oligocene Alligator relative Allognathosuchus †Allognathosuchus – or unidentified comparable form
* †Allosaurus
** †Allosaurus medius – type locality for species
* †Ambigostrea
** †Ambigostrea tecticosta
* Amuletum
** †Amuletum dumasensis
** †Amuletum fasciolatum – or unidentified comparable form
* Assemblage of fossilized skeletons of the softshell turtle Amyda †Amyda
** †Amyda prisca
* †Anatimya
** †Anatimya anteradiata
* †Ancilla
** †Ancilla acutula
* †Anomalofusus
** †Anomalofusus lemniscatus
* †Anomia
** †Anomia argentaria
** †Anomia ornata
* †Anomoeodus
** †Anomoeodus latidens
** †Anomoeodus phaseolus
* †Anteglossia
* †Aphrodina
** †Aphrodina tippana
* †Araloselachus
** †Araloselachus cuspidata
* †Arctostrea
** †Arctostrea falacata
* †Argillomys – type locality for genus
** †Argillomys marylandensis – type locality for species
* †Ariadnaesporites
** †Ariadnaesporites intermedius – type locality for species
* Arrhoges
* †Arundelconodon – type locality for genus
** †Arundelconodon hottoni – type locality for species
* †Arundelemys – type locality for genus
** †Arundelemys dardeni – type locality for species
* Astarte
** †Astarte culebrensis
* Life restoration of the Early Cretaceous sauropod dinosaur Astrodon †Astrodon
** †Astrodon johnstoni – type locality for species

## B

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* Fossilized shell of the Late Cretaceous ammonoid cephalopod Baculites †Baculites
** †Baculites baculus
** †Baculites elisasi
** †Baculites vertebralis
* †Bathytormus
** †Bathytormus pteropsis
* †Bellifusus
** †Bellifusus curvicostatus
* †Belliscala
* †Beretra
** †Beretra gracilis – or unidentified comparable form
** †Beretra ripleyana
** †Beretra speciosa
* †Bottosaurus
** †Bottosaurus harlani
* Botula
** †Botula conchafodentis
** †Botula lingua
** †Botula ripleyana
* †Buccinopsis
** †Buccinopsis crassicostata

## C

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* Cadulus
** †Cadulus obnutus
* Caestocorbula
** †Caestocorbula crassaplica
** †Caestocorbula crassiplica
** †Caestocorbula percompressa
** †Caestocorbula terramaria
* †Camptonectes
** †Camptonectes bubonis
* Carcharias
** †Carcharias holmdelensis
** †Carcharias samhammeri
* †Cardiaster
** †Cardiaster marylandicus
* Cardium [fr; nl; sv]
* †Caveola
** †Caveola acuta
* Life restoration of the Late Triassic-Eocene lungfish Ceratodus †Ceratodus
** †Ceratodus kranzi – type locality for species
* Cerithium
** †Cerithium weeksi – or unidentified related form
* Chiloscyllium
** †Chiloscyllium greeni
* †Cimoliasaurus
** †Cimoliasaurus magnus
* †Clavatipollenites
* †Clavipholas
** †Clavipholas pectorosa
** †Clavipholas pectrosa
* †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
** †Corax pristiodontus
* Corbula
** †Corbula subradiata
* †Corymya – or unidentified comparable form
** †Corymya tennis
* †Couperites
** †Couperites mauldinensis
* Crassatella
** †Crassatella vadosa
* †Crenella
** †Crenella elegantula
** †Crenella serica
* †Creonella
** †Creonella subangulata – or unidentified comparable form
** †Creonella triplicata
* Fossil of the Early Cretaceous-Eocene shark Cretolamna †Cretolamna
** †Cretolamna appendiculata
** †Cretolamna serrata – or unidentified comparable form
* Cucullaea
** †Cucullaea capax
* †Cuna
** †Cuna texana
* †Cuneolus
** †Cuneolus pectrosa
** †Cuneolus tippana
* Cuspidaria
** †Cuspidaria ampulla
* †Cyclorisma
** †Cyclorisma parva
* Cylichna
** †Cylichna diversilirata
** †Cylichna incisa
* †Cylindracanthus
* †Cymbophora
** †Cymbophora appressa
** †Cymbophora berryi
** †Cymbophora wordeni
* †Cymella
** †Cymella bella
* †Cyprimeria
** †Cyprimeria alta
** †Cyprimeria depressa
** †Cyprimeria major

## D

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* Dasyatis
* Life restoration of the Early Cretaceous dromaeosaur ("raptor") Deinonychus †Deinonychus
** †Deinonychus antirrhopus
* †Deinosuchus
** †Deinosuchus rugosus
* †Dentalium
** †Dentalium leve
* †Deussenia
** †Deussenia bellalirata
** †Deussenia ripleyana
* †Discoscaphites
** †Discoscaphites abyssinius
** †Discoscaphites conradi
** †Discoscaphites gulosus
** †Discoscaphites iris
* †Drilluta
** †Drilluta buboanus
** †Drilluta distans
** †Drilluta marylandicus

## E

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* †Egertonia
* †Ellipsoscapha
** †Ellipsoscapha cylindrica
** †Ellipsoscapha mortoni
** †Ellipsoscapha occidentalis – or unidentified comparable form
* Restoration of the Early Cretaceous-Eocene bony fish Enchodus, or the "saber-toothed herring" †Enchodus
** †Enchodus dirus
** †Enchodus ferox
** †Enchodus feroz
* †Endoptygma
** †Endoptygma leprosa
* †Eoacteon
** †Eoacteon linteus
* †Etea
** †Etea carolinensis
* †Eubaculites
** †Eubaculites carinatus
** †Eubaculites latecarinatus
* †Eufistulana
* †Eufistulina
* †Eulima
** †Eulima clara
** †Eulima monmouthensis
* †Euspira
** †Euspira rectilabrum
** †Euspira reetilabrum
* †Eutrephoceras
** †Eutrephoceras dekayi
* †Ewingia
** †Ewingia problematica
* Interior of a fossilized shell of the Jurassic-Cretaceous foam oyster Exogyra †Exogyra
** †Exogyra costata

## F

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* †Flabellosmilia
** †Flabellosmilia vaughani
* †Fulgerca
** †Fulgerca attenuata – or unidentified related form
* †Fusimilis
** †Fusimilis kummeli
** †Fusimilis novemcostatus
** †Fusimilis tippanus

## G

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* Galeorhinus
** †Galeorhinus giradoti
* Ginglymostoma
* Glossus
* Glycimeris
** †Glycimeris mortoni
* Glycymeris
** †Glycymeris rotundata
* †Glyptops
** †Glyptops caelatus – type locality for species
* †Goniochasma
* †Goniopholis
** †Goniopholis affinis – type locality for species
* Fossil negative with skin impressions of the theropod dinosaur footprint ichnogenus Grallator †Grallator – or unidentified comparable form
* †Granocardium
** †Granocardium dumosum
** †Granocardium eufalense
** †Granocardium kuemmeli
** †Granocardium kummeli
** †Granocardium lowei
* †Graphidula
** †Graphidula multicostata
** †Graphidula terebriformis
* †Gryphaeostrea
** †Gryphaeostrea vomer
* Gyrodes
** †Gyrodes americanus
** †Gyrodes spillmani
** †Gyrodes subcarinatus
** †Gyrodes supraplicatus

## H

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* †Hadrodus
* Life restoration of the Late Cretaceous mosasaur Halisaurus †Halisaurus
** †Halisaurus platyspondylus
* †Hamatia – type locality for genus
** †Hamatia elkneckensis – type locality for species
* †Hamulus
** †Hamulus falcatus
** †Hamulus huntensis – tentative report
** †Hamulus onyx
** †Hamulus squamosus
* †Hercorhynchus
** †Hercorhynchus trililatus
* †Hercorhyncus
** †Hercorhyncus pagodaformis
** †Hercorhyncus tippanus
* Heterodontus
* †Heteromorpha
** †Heteromorpha ammonite
* Fossil of the Jurassic-Paleogene lobster Hoploparia †Hoploparia
** †Hoploparia gladiator
* †Hybodus
* †Hydrotribulus
** †Hydrotribulus asper
* †Hyposaurus
** †Hyposaurus rogersii
* †Hypotodus
* †Hypsiloichnus – type locality for genus
** †Hypsiloichnus marylandicus – type locality for species

## I

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* 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

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* †Jeletzkytes
** †Jeletzkytes criptonodosus
** †Jeletzkytes nebrascensis
* Juliacorbula
** †Juliacorbula monmouthensis

## L

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* Laternula
** †Laternula robusta
* †Latiala
** †Latiala lobata – or unidentified comparable form
* Shells in multiple views of Latiaxis coral sea snails Latiaxis
* †Legumen
** †Legumen ellipticum
** †Legumen planulatum
* Lepisosteus
* †Leptosolen
** †Leptosolen biplicata
** †Leptosolen elongata
* Lima
** †Lima pelagica
* Limatula
** †Limatula acutilineata
* †Linearia
** †Linearia crebelli
* †Linearis
** †Linearis metastriata
* †Liopeplum
** †Liopeplum canalis
** †Liopeplum coronatum
** †Liopeplum cretaceum
* †Liopistha
** †Liopistha prolexta
** †Liopistha protexta
* Lithophaga
** †Lithophaga carolinensis
** †Lithophaga julia
* †Longitubus
** †Longitubus lineatus
* †Longoconcha
* Fossilized shell of the Triassic-modern marine bivalve Lopha Lopha
** †Lopha falcata
** †Lopha mesenterica
* †Lowenstamia
** †Lowenstamia cucullata
* †Loxsomopteris – type locality for genus
** †Loxsomopteris anasilla – type locality for species
* †Lupira
* †Lycettia
** †Lycettia tippana
** †Lycettia tippanus
* †Lyriochlamys
** †Lyriochlamys cretosa
** †Lyriochlamys cretosus

## M

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* Malletia
** †Malletia littlei
** †Malletia longfrons
** †Malletia longifrons
** †Malletia stephensoni
* †Mathilda
** †Mathilda cedarensis – or unidentified comparable form
** †Mathilda corona
* †Mauldinia – type locality for genus
** †Mauldinia mirabilis – type locality for species
* †Menabites
** †Menabites delawarensis
** †Menabites vanuxemi
* †Mesostoma
* †Micrabacia
** †Micrabacia marylandica
** †Micrabacia radiata
* †Modiolus
** †Modiolus sedesclaris
** †Modiolus sedesclarus
** †Modiolus trigonus
* †Morea
** †Morea cancellaria
** †Morea marylandica
* Life restoration of two of the Late Cretaceous Mosasaurus †Mosasaurus
** †Mosasaurus conodon
** †Mosasaurus dekayi
** †Mosasaurus maximus
* Myliobatis
** †Myliobatis obesus
* †Myobarbum
** †Myobarbum monmouthensis – tentative report
* Myrtea
** †Myrtea stephensoni
* †Mytilus – tentative report

## N

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* †Napulus
** †Napulus octoliratus
* Close-up portrait of a living Nebrius nurse shark Nebrius
* †Nemodon
** †Nemodon eufalensis
** †Nemodon eufaulensis
** †Nemodon stantoni
* †Nonactaeonina
** †Nonactaeonina graphoides – or unidentified comparable form
* Nucula
** †Nucula camia
** †Nucula cuneifrons
** †Nucula percrassa
** †Nucula perequalis
** †Nucula severnensis
** †Nucula slackiana
* Nuculana
** †Nuculana rostratruncata
** †Nuculana whitfieldi
* †Nymphalucina
** †Nymphalucina linearia

## O

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* A living Odontaspis sand shark Odontaspis
** †Odontaspis aculeatus
** †Odontaspis macrota
* †Odontobasis
** †Odontobasis sulcata – or unidentified comparable form
* †Oligoptycha
* †Opertochasma
* †Osteopygis
** †Osteopygis emarginatus

## P

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* †Paladmete
** †Paladmete cancellaria
** †Paladmete laevis
* †Paleopsephaea
** †Paleopsephaea tenuilirata
* Panopea
** †Panopea decisa
** †Panopea monmouthensis
* †Paralbula
** †Paralbula casei
* †Parmicorbula
** †Parmicorbula percompressa
** †Parmicorbula terramaria
* †Pelletixia
** †Pelletixia amelguita – type locality for species
* †Periplomya
* †Peritresius
** †Peritresius ornatus
* †Perrisonota
** †Perrisonota littlei
** †Perrisonota protexta
* †Phelopteria
** †Phelopteria linguaeformis
** †Phelopteria linguiformis
* Pholas
* †Pinna
** †Pinna laqueata
* Fossilized shell of the Late Cretaceous ammonoid cephalopod Placenticeras †Placenticeras
** †Placenticeras placenta
** †Placenticeras syrtale
* †Platananthus
** †Platananthus potomacensis – type locality for species
* †Platanocarpus – type locality for genus
** †Platanocarpus elkneckensis – type locality for species
** †Platanocarpus marylandensis – type locality for species
* †Pleuriocardia
** †Pleuriocardia eufalensis
* †Pleurocoelus – type locality for genus
** †Pleurocoelus altus – type locality for species
** †Pleurocoelus nanus – type locality for species
* †Plicatoscyllium
** †Plicatoscyllium antiquum
** †Plicatoscyllium derameei
* Polinices
** †Polinices kummeli
* †Postligata
** †Postligata wordeni
* †Praeleda
** †Praeleda compar
* †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
* †Promathildia
** †Promathildia parvula – or unidentified comparable form
* †Propanoplosaurus – type locality for genus
** †Propanoplosaurus marylandicus – type locality for species
* †Protocallianassa
** †Protocallianassa mortoni
* †Protocardia
** †Protocardia spillmani
* †Pseudohypolophus
** †Pseudohypolophus menultyi
* †Pseudolimea
** †Pseudolimea reticulata
** †Pseudolimea serrata
* Pseudomalaxis
** †Pseudomalaxis pateriformis
** †Pseudomalaxis pilsbryi
** †Pseudomalaxis stantoni
* †Pteria
** †Pteria rhombica
* †Pterocerella
** †Pterocerella tippana
* Fossilized shell of the Jurassic-Cretaceous marine bivalve Pterotrigonia †Pterotrigonia
** †Pterotrigonia eufalensis
** †Pterotrigonia eufaulensis
** †Pterotrigonia thoracica
* †Ptychotrygon
** †Ptychotrygon vermiculata
* †Pugnellus
** †Pugnellus densatus
* Pycnodonte
** †Pycnodonte vesicularis
* †Pyrifusus
** †Pyrifusus crassus
** †Pyrifusus subdensatus
* †Pyropsis
** †Pyropsis perlata
** †Pyropsis prolixa

## R

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* Raja
** †Raja farishi
* †Remera
** †Remera cretacea – or unidentified comparable form
** †Remera flexicostata
** †Remera juncea
* †Remnita
** †Remnita anomalocostata
** †Remnita biacuminata – or unidentified comparable form
** †Remnita hastata
* Rhinobatos
* Restoration of the Late Cretaceous-Paleocene ray Rhombodus †Rhombodus
** †Rhombodus binkhorsti
* †Rhombopsis
* Ringicula
** †Ringicula clarki
** †Ringicula pulchella
* Rissoina
** †Rissoina tennesseensis

## S

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* †Sargana
** †Sargana stantoni
* †Scambula
** †Scambula perplana
* Fossilized shell of the Late Cretaceous ammonoid cephalopod Scaphites †Scaphites
** †Scaphites hippocrepis
* Serpula
* †Serratolamna
** †Serratolamna serrata
* †Serrifusus – tentative report
* †Solariorbis
** †Solariorbis clara – or unidentified comparable form
* †Solyma
** †Solyma elliptica
** †Solyma gardnerae
* †Sourimis
** †Sourimis georgiana – tentative report
* †Spanomera
** †Spanomera marylandensis
* †Sphenodiscus
** †Sphenodiscus lobatus
** †Sphenodiscus pleurisepta
* Life restoration of the Late Cretaceous shark Squalicorax Squalicorax
** †Squalicorax falcatus
** †Squalicorax kaupi
** †Squalicorax pristodontus
* Squatina
** †Squatina hassei
* †Stantonella
** †Stantonella interrupta
* †Stephanodus
* Striarca
** †Striarca cuneata
** †Striarca saffordi
* †Striaticostatum
** †Striaticostatum sparsum
* †Striatopollis
** †Striatopollis paraneus
** †Striatopollis vermimurus
* †Syncyclonema
** †Syncyclonema simplicius

## T

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* Tellina
* †Tellinimera
** †Tellinimera buboana
** †Tellinimera gabbi
* †Tenea
** †Tenea parilis
* Life restoration of the Early Cretaceous Iguanodon relative Tenontosaurus †Tenontosaurus
* †Tenuipteria
** †Tenuipteria argentea
** †Tenuipteria argenteus
* †Thoracosaurus
** †Thoracosaurus neocesariensis
* Trachycardium
** †Trachycardium eufaulensis
* †Trachytriton
* 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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* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Urceolabrum
** †Urceolabrum tuberculatum

## V

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Veniella
** †Veniella conradi
* †Vetericardiella
** †Vetericardiella crenalirata
* †Vorhisia

## W

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Weeksia
** †Weeksia peplanata

## X

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* †Xylophagella
** †Xylophagella irregularis