This list of the Cenozoic 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 66 million and 10,000 years of age.
A
†Abra – tentative report †Abra longicalla Acanthodesia †Acanthodesia oblongula †Acanthodesia savartii †Acantodesia †Acantodesia oblongula Acipenser †Acrocoelum †Acrocoelum richardsi – type locality for species Acropora †Acropora palmata Acteocina †Acteocina canaliculata Acteon †Acteon danicus – type locality for species †Acteon ovoides †Adocus †Aepycamelus – tentative report Aetobatus †Aetobatus arcuatus †Aetobatus irregularis †Aetobatus profundus – type locality for species †Aglaocetus †Aglaocetus patulus Alca †Alca torda – or unidentified comparable form Aligena †Aligena aequata †Aligena elevata †Ambystoma †Ambystoma maculatum †Ambystoma tigrinum Amia †Amphicyon Amyda †Amyda cellulosa Anachis †Anachis avara Anadara †Anadara andrewsi †Anadara ovalis †Anadara subrostrata †Anadara transversa Anas †Anas crecca Ancilla – report made of unidentified related form or using admittedly obsolete nomenclature Angulus †Angulus agilis Anomia †Anomia aculeata †Anomia marylandica †Anomia multilineata †Anomia simplex Anticlimax – tentative report †Anticlimax gardnerae – type locality for species †Aphelops – tentative report †Aporrhaid †Aporrhaid gastropod Aporrhais †Aporrhais potomacensis Aquila †Aquila chrysaetos †Araeodelphis – type locality for genus †Araeodelphis natator – type locality for species †Araloselachus †Araloselachus cuspidata Arca †Arca callipleura †Arca improcera †Archaeohippus Architectonica †Architectonica form A informal †Architectonica form B informal †Arctodus †Arctodus pristinus Argopecten †Argopecten irradians †Armatobalanus †Armatobalanus calvertensis Arossia †Arossia bohaska – type locality for species †Arossia cummembrana – type locality for species †Arossia newmani †Asaphis †Asaphis centenaria †Aspideretoides †Aspideretoides virginianus Astarte †Astarte cuneiformis †Astarte exaltata †Astarte marylandica †Astarte obruta †Astarte perplana †Astarte thisphila †Astarte thomasi †Astarte undata Asterias †Asterias forbesi – or unidentified comparable form Astrangia †Astrangia danae †Astrehelia †Astrehelia palmata †Astrhelia †Astrhelia plamata †Astroscopus †Astroscopus countermani – type locality for species Astyris †Astyris communis †Astyris lunata Ataphrus †Ataphrus glandula Athleta †Athleta limopsis †Athleta tuomeyi †Atopomys †Atopomys texensis Atrina †Atrina harrisi †Atrina harrisii †Aulophyseter †Aulophyseter mediatlanticus – type locality for species
B
Balaenoptera †Balaenoptera cephalus †Balaenoptera pusilla – type locality for species Balanus †Balanus concabvus †Balanus concava †Balanus crenatus †Balanus imitator †Balanus vulcanellus – type locality for species Bankia †Bankia gouldi Barnea †Barnea costata Bathytormus †Bathytormus alaeformis †Batiacasphaera †Batiacasphaera sphaerica †Belosphys Bicorbula †Bicorbula idonea Blarina †Blarina brevicauda †Blarina carolinensis †Bolis – or unidentified comparable form Bonasa †Bonasa umbellus Boreotrophon †Boreotrophon harasewychi – type locality for species Brachidontes †Brachidontes potomacensis †Brachyprotoma †Brachyprotoma obtusata †Brevirostrodelphis †Brevirostrodelphis dividum – type locality for species †Brevoortia †Brevoortia tyrannus – or unidentified comparable form Buccinofusus †Buccinofusus chesapeakensis †Buccinofusus parilis Bufo †Bufo americanus †Bufo woodhousei †Bulliopsis †Bulliopsis marylandica †Bulliopsis quadrata Busycon – type locality for genus †Busycon carica †Busycon fusiforme †Busycon fusiformis †Busycotyphus †Busycotyphus coronatum †Busycotyphus rugosum Busycotypus †Busycotypus alveatum †Busycotypus asheri – type locality for species †Busycotypus canaliculatus †Busycotypus coronatum †Busycotypus rugosum
C
Cadulus †Cadulus bellulus †Cadulus newtonensis †Cadulus thallus Caecum †Caecum patuxentium †Calianassa †Calianassa atlantica †Calianassa matsoni – or unidentified comparable form Callinectes †Callinectes ornatus †Callinectes sapidus Calliostoma †Calliostoma alphelium †Calliostoma aphelium †Calliostoma humile – or unidentified comparable form †Calliostoma philanthropus †Calliostoma philathropus Callista †Callista marylandica Callocardia †Callocardia catharia Calonectris Calyptraea †Calyptraea aldrichi – type locality for species †Calyptraea centralis †Calyptraphorus †Calyptraphorus jacksoni Cancellaria †Cancellaria alternata Cancer †Cancer irroratus Canis †Canis armbrusteri – type locality for species †Canis latrans †Canis rufus – or unidentified comparable form Cantharus †Cantharus marylandicus †Carassatellites †Carassatellites turgidulus Carcharhinus †Carcharhinus egertoni Carcharias †Carcharias collata – type locality for species Carcharodon †Carcharodon auriculatus †Carcharodon hastalis Cardita †Cardita protracta †Caricella Carphophis †Carphophis amoenus Caryocorbula †Caryocorbula cuneata †Caryocorbula inaqualis Cassis Castor †Castor canadensis Catapleura †Catapleura repanda – type locality for species †Cephalotropis – type locality for genus †Cephalotropis coronatus – type locality for species Cerastoderma †Cerastoderma leptopleurum Cervus †Cetophis – type locality for genus †Cetophis heteroclitus – type locality for species Cetorhinus †Cetotherium †Cetotherium megalophysum †Cetotherium parvum – type locality for species Chama †Chama corticosa Chelone Chelydra †Chelydra serpentina †Chesacardium †Chesacardium craticuloides †Chesacardium laqueatum †Chesaclava – type locality for genus †Chesaclava dissimilis †Chesaclava quarlesi – type locality for species †Chesaconavus †Chesaconavus chesapeakensis †Chesaconavus rossi †Chesaconcavus †Chesaconcavus chesapeakensis †Chesaconcavus myosulcatus †Chesaconcavus proteus †Chesaconcavus rossi †Chesaconcavus santamaria †Chesapecten †Chesapecten coccymelus †Chesapecten coccymeus †Chesapecten covepointensis †Chesapecten jeffersonius †Chesapecten madisonius †Chesapecten monicae †Chesapecten nefrens †Chesapecten santamaria †Chesasyrinx – type locality for genus †Chesasyrinx rotifera †Chesatrophon – type locality for genus †Chesatrophon chesapeakeanus – type locality for species Chlamys †Chlamys choctavensis †Chlamys sheldonae †Chloridella †Chloridella empusa Chrysemys †Chrysemys picta †Cimomia †Cimomia marylandensis – type locality for species Circulus – report made of unidentified related form or using admittedly obsolete nomenclature †Circulus form A informal Cirsotrema †Cirsotrema form A informal †Cirsotrema from B informal Clavus †Cleistophaeridium †Cleistophaeridium placacanthum Clementia †Clementia inoceriformis Clethrionomys †Clethrionomys gapperi – or unidentified comparable form Cliona †Cliona sulphurea †Clionia †Clionia sulphurea Coluber †Coluber constrictor Concavus †Concavus concavus †Concavus crassostricola Condylura †Condylura cristata Conopeum †Conopeum germanum Conus †Conus deluvianus †Conus diluvianus †Conus sanctaemariae – type locality for species Coralliophaga †Coralliophaga bryani Corbula †Corbula elevata †Corbula inaequalis †Corbula pectorosa – type locality for species †Coronia Crassatella †Crassatella aquiana †Crassatella marylandica †Crassatella melinus Crassostrea †Crassostrea virginica Crenilabium – or unidentified comparable form †Crenilabium elatum †Creonella †Creonella obscuriplica – type locality for species Crepidula †Crepidula fornicata †Crepidula plana †Cretolamna †Cretolamna appendiculata Crotalus †Crotalus horridus Crucibulum †Crucibulum constrictum †Crucibulum costata †Crucibulum multilineatum Cryptobranchus †Cryptobranchus guildayi – type locality for species Cucullaea †Cucullaea gigantea †Cucullaea transversa Cumingia †Cumingia tellinoides †Cybium Cyclocardia †Cyclocardia granulata †Cyclopsiella †Cyclopsiella lusatica Cyclostremiscus †Cyclostremiscus sohli – type locality for species Cylichna †Cylichna venusta – type locality for species Cymatosyrinx †Cymatosyrinx mariana – type locality for species †Cynarctus †Cynarctus marylandica – type locality for species †Cynarctus wangi – type locality for species †Cynorca – tentative report Cypraea Cyrtopleura †Cyrtopleura costata Cythara †Cythereis †Cythereis tuberculata Cytheridea †Cytheridea punctillata †Cytheris †Cytheris tuberculata
D
†Dallarca †Dallarca elevata †Dallarca elnia †Dallarca idonea †Dallarca staminea †Dallarca subrostrata Dasyatis †Dasyatis centrourus – or unidentified comparable form †Delphinodon †Delphinodon leidyi Dentalium †Dentalium attenuatum †Desmathyus Diadophis †Diadophis punctatus Diodora †Diodora griscomi †Diodora marlboroensis †Diodora marylandica †Diodora marylandicus †Diodora nassula †Diodora redimicula †Diorocetus – type locality for genus †Diorocetus hiatus – type locality for species Diplodonta †Diplodonta marlboroensis †Diplodonta subvexa †Dipoides Discinisca †Discinisca lugubris †Discinisca lugubrius Divalinga †Divalinga quadrisulcata †Dolicholatirus Dosinia †Dosinia acetabulum †Dosiniopsis †Dosiniopsis lenticularis
E
†Eburneopecten †Eburneopecten cerinus – type locality for species †Eburneopecten dalli Echinocardium †Echinocardium marylandiense – type locality for species Echinophoria – type locality for genus †Echinophoria caelatura †Ecphora †Ecphora chesapeakensis – type locality for species †Ecphora gardnerae †Ecphora meganae †Ecphora quadricostata †Ecphora scientistensis †Ecphora tampaensis †Ecphora tricostata †Ecphora turneri †Ectoganus †Ectoganus gliriformis – or unidentified comparable form †Ectopistes †Ectopistes migratorius Elaphe †Elaphe vulpina Electra †Electra monostachys Elphidium †Elphidium discoidale †Elphidium incertum †Elphidium latispatium Ensis †Ensis directus †Ensis ensiformis †Entobia Entosolenia †Entosolenia globosa †Entosolenia lucida Eontia †Eontia palmerae †Eontia ponderosa †Eopleurotoma – or unidentified comparable form †Eopleurotoma harrisi †Eopleurotoma potomacensis †Eosuchus †Eosuchus minor †Eosurcula – or unidentified comparable form †Eosurcula ducateli Epitonium †Epitonium angulatum †Epitonium chancellorensis – type locality for species †Epitonium denticulatum †Epitonium humphreysii †Epitonium multistriatum †Epitonium rupicola †Epitonium sayanum Eponides †Eponides frigida Eptesicus †Eptesicus fuscus – or unidentified comparable form Equus †Equus complicatus †Equus giganteus Erethizon †Erethizon dorsatum †Euceratherium †Euceratherium collinum †Euclastes – tentative report Eucrassatella †Eucrassatella melinus Eulima †Eulima brightseatensis – type locality for species †Eulima form A informal Eumeces †Eumeces fasciatus – or unidentified comparable form Eupleura †Eupleura caudata †Eurhinodelphis †Eurhinodelphis longirostris Euspira †Euspira heros †Euspira marylandica †Euspira tuomeyi
F
Felis †Felis couguar †Ficopsis Fissurella †Fissurella fluviamariana – type locality for species †Fistulobalanus †Fistulobalanus klemmi †Florilus †Florilus chesapeakensis †Florimetis †Florimetis biplicata †Fulgar †Fulgar coronatum
G
Galeocerdo †Galeocerdo aduncus †Galeocerdo appendiculatus †Galeocerdo contortus †Galeocerdo latidens Galeodea Gari †Gari gubernatoria Gastrochaena Gavia †Gavia immer †Gavialosuchus †Gavialosuchus antiquus Gegania †Gegania marylandica Gemma †Gemma gemma Genota – or unidentified comparable form †Genota bellistriata Geukensia †Geukensia demissa Gibbula – tentative report †Gibbula glandula †Gilbertina †Gilbertina texana Glaucomys Globigerina