List of the Paleozoic life of Maryland

This list of the Paleozoic 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 538.8 and 252.17 million years of age.

A

• †Acanthopecten – tentative report
  • †Acanthopecten armigerus
  • †Acanthopecten carboniferus
• †Acanthotriletes
  • †Acanthotriletes pullus
• †Acoblatta – type locality for genus
  • †Acoblatta argillacea – type locality for species
• †Actinopteria
  • †Actinopteria boydi
  • †Actinopteria boydii
  • †Actinopteria decussata
• †Aglaoglypta
  • †Aglaoglypta maera
• †Ambloblatta – type locality for genus
  • †Ambloblatta bassleri – type locality for species
• †Ambocoelia
  • †Ambocoelia umbonata
• †Ambonychia
• †Amphiscapha
  • †Amphiscapha catilloides

• Fossils of the Ordovician-Permian bryozoan Amplexopora

  †Amplexopora
• †Anapiculatisporites
  • †Anapiculatisporites crassisetus – type locality for species
• †Anazyga
  • †Anazyga recurvirostra – tentative report
• †Ancyrospora
  • †Ancyrospora ancyrea
• †Aneurospora
  • †Aneurospora semizonalis
• †Anoplotheca
• †Anthraconeilo
  • †Anthraconeilo taffiana
• †Aparchites
  • †Aparchites punctillosa
• †Archaeoscyphia
• †Archaeotriletes
  • †Archaeotriletes aduncus
• †Archaeozonotriletes
  • †Archaeozonotriletes notatus
• †Archimylacris
  • †Archimylacris delicata – type locality for species
• †Arthroacantha
  • †Arthroacantha punctobrachiata – or unidentified comparable form
• †Astartella
  • †Astartella concentrica
  • †Astartella vera
• †Atlanticocoelia
• †Atrypa

  • 

    Fossilized shell of the Silurian-Late Devonian brachiopod Atrypa reticularis

    †Atrypa reticularis – report made of unidentified related form or using admittedly obsolete nomenclature
• †Aviculopecten

B

• †Bactrites
• Bairdia
• †Bassipterus
  • †Bassipterus virginicus
• †Batostomella
• †Bellefontia
  • †Bellefontia collieana – tentative report

• 

  Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon

  †Bellerophon
  • †Bellerophon clarki
• †Beyrichia
  • †Beyrichia moodeyi
  • †Beyrichia veronica
• †Biharisporites
  • †Biharisporites maguashensis
• †Bolbiprimitia
• †Bollia
  • †Bollia immersa
  • †Bollia nitida
  • †Bollia pulchella
• †Bonnemaia
  • †Bonnemaia celsa
  • †Bonnemaia perlonga
• †Brachymylacris
  • †Brachymylacris martini – type locality for species
• †Brochotriletes
• †Bucania – tentative report
• †Buthotrephis
  • †Buthotrephis gracilis
• †Buthrotrephis
• †Byssonychia
  • †Byssonychia radiata
• Bythocypris
  • †Bythocypris obesa
  • †Bythocypris pergracilis

C

• †Calamospora
  • †Calamospora atava
  • †Calamospora nigrata
• †Calymene
  • †Calymene camerata
  • †Calymene cresapensis

  • 

    Fossils in enrolled posture of the Silurian trilobite Calymene niagarensis

    †Calymene niagarensis – or unidentified comparable form
  • †Calymene niagraensis
• †Camarotoechia
  • †Camarotoechia andrewsi
  • †Camarotoechia litchfieldensis
  • †Camarotoechia tonolowayensis
• †Cariniferella
  • †Cariniferella carinata
• †Cavellina
• †Ceratopea
• †Cheliphlebia – tentative report
  • †Cheliphlebia argillacea – type locality for species
• †Chonetes
  • †Chonetes novascoticus
• †Chonetina
  • †Chonetina verneuilianus
• †Chonostrophia

• 

  Assemblage of fossilized shells of the Ordovician brachiopod Cincinnetina

  †Cincinnetina
  • †Cincinnetina multisecta
• †Clidophorus
  • †Clidophorus nitidus
• †Clitendoceras
• †Coelospira
  • †Coelospira nitens
  • †Coelospira sulcata
• †Composita
  • †Composita ovata – tentative report
• †Conularia
  • †Conularia niagarensis
• †Convolutispora
  • †Convolutispora subtilis
• †Coreanoceras

• 

  Fossil of the Middle Ordovician-Carboniferous horn coral Cornulites

  †Cornulites
  • †Cornulites concavus
  • †Cornulites rosehillensis
• †Corvellites
• †Crurithyris
  • †Crurithyris planoconvexa
• †Cryptolithus
• †Ctenodonta
  • †Ctenodonta subreniformis
• †Culunana
  • †Culunana attenuata
• †Cupularostrum
  • †Cupularostrum contracta
• †Cyathophyllum
• †Cymatospira
  • †Cymatospira montfortianus
• †Cyphomylacris – type locality for genus
  • †Cyphomylacris atrata – type locality for species
• †Cyphotrypa
• †Cypricardella
  • †Cypricardella crassa
  • †Cypricardella cumberlandiae
  • †Cypricardella gregaria
  • †Cypricardella nitidula
  • †Cypricardella tenuistriata
• †Cypricardinia
  • †Cypricardinia elegans
• †Cyrtina
• †Cyrtodontula
  • †Cyrtodontula subtruncata

D

• †Dakeoceras

• 

  Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites

  †Dalmanites
  • †Dalmanites limulurus
• †Dekayia
• †Delthyris
  • †Delthyris vanuxemi
• †Derbyia
  • †Derbyia crassa
• †Diaphanospora
  • †Diaphanospora reticulatus
• †Diaphelasma
• †Dibolbina
  • †Dibolbina cristata
• †Dictyotriletes
• †Dinoblatta – type locality for genus
  • †Dinoblatta cubitalis – type locality for species
  • †Dinoblatta fortis – type locality for species
• †Diparelasma
• †Dizygopleura
  • †Dizygopleura acuminata
  • †Dizygopleura carinata
  • †Dizygopleura conjugata
  • †Dizygopleura costata
  • †Dizygopleura gibba
  • †Dizygopleura halli
  • †Dizygopleura intermedia
  • †Dizygopleura micula
  • †Dizygopleura perrugosa
  • †Dizygopleura pricei
  • †Dizygopleura proutyi
  • †Dizygopleura simulans
  • †Dizygopleura subdivisa
  • †Dizygopleura subovalis
  • †Dizygopleura swartzi
  • †Dizygopleura symmetrica

• 

  Life restoration of the Silurian eurypterid ("sea scorpion") Dolichopterus

  †Dolichopterus
• †Doloresella
• †Donaldina
  • †Donaldina stevensana
• †Drepanellina
  • †Drepanellina clarki
  • †Drepanellina ventralis
• †Dunbarella
  • †Dunbarella striata – type locality for species

E

• †Ecculiomphalus
• †Edmondia
  • †Edmondia aspenwallensis
  • †Edmondia pseudoreflexa – type locality for species
• †Eldredgeops
  • †Eldredgeops rana
• †Elita
• †Ellesmeroceras
• †Emphanisporites
  • †Emphanisporites annulatus
  • †Emphanisporites rotatus
• †Encrinurus
  • †Encrinurus ornatus
• †Endocycloceras
  • †Endocycloceras legorense
• †Eospirifer
  • †Eospirifer crispus

• 

  Life restoration of the Silurian-Early Devonian eurypterid ("sea scorpion") Erettopterus

  †Erettopterus – tentative report
• †Escharendoceras
• †Euchondria
  • †Euchondria levicula – tentative report
• †Eukloedenella
  • †Eukloedenella elongata
  • †Eukloedenella punctillosa
  • †Eukloedenella sinuata
  • †Eukloedenella sulcifrons
  • †Eukloedenella umbilicata
• †Euomphalus
• †Euphemites
  • †Euphemites vittatus

• 

  Life restoration of Silurian eurypterid ("sea scorpion") Eurypterus

  †Eurypterus
  • †Eurypterus remipes
• †Euthydesma

F

• 

  Fossil of the Late Ordovician-Permian tabulate coral Favosites

  †Favosites
  • †Favosites niagarensis – or unidentified comparable form
• †Finkelnburgia
  • †Finkelnburgia virginica – tentative report
• †Fistulipora
• †Flexicalymene
• †Floweria
  • †Floweria chemungensis
• †Foveosporites
  • †Foveosporites insculptus

G

• †Gasconadia
  • †Gasconadia putilla
• †Geminospora
  • †Geminospora svalbardiae
  • †Geminospora tuberculata
• †Girtyspira
  • †Girtyspira minuta
• †Glabrocingulum
  • †Glabrocingulum grayvillense
  • †Glabrocingulum ornatum
• †Glyptoglossella
  • †Glyptoglossella cavellosa
• †Glyptorthis
  • †Glyptorthis equiconvexa – type locality for species

• 

  Fossilized shell of the Late Devonian-Late Triassic ammonoid cephalopod Goniatites

  †Goniatites
• †Grammysia
• †Gyrodoma
  • †Gyrodoma marylandica

H

• †Halliella
  • †Halliella fissurella
  • †Halliella subequata

• 

  Fossil of the Ordovician bryozoan ("moss animal") Hallopora

  †Hallopora
• †Healdia
• †Hebertella
  • †Hebertella sinuata
• †Hemimylacris – type locality for genus
  • †Hemimylacris bassleri – type locality for species
• †Heterotrypa
• †Hindella
  • †Hindella congregata
• †Hippocardia
  • †Hippocardia cumberlandiae – type locality for species

• 

  Fossilized shells of the Ordovician-Carboniferous sea snail Holopea

  †Holopea
• †Homeospira
  • †Homeospira evax
• †Hormotoma
  • †Hormotoma hopkinsi
  • †Hormotoma rowei
• †Hyolithes
• †Hystricosporites
  • †Hystricosporites porcatus
• †Hystriculina – tentative report
  • †Hystriculina wabashensis
• †Hystricurus

I

• †Inaperaturate
• †Ischyrodonta – tentative report
  • †Ischyrodonta truncata

• 

  Fossil of the Middle-Late Ordovician giant trilobite Isotelus.

  †Isotelus

J

• †Juresania
  • †Juresania symmetrica – tentative report

K

• †Kitikamispira
  • †Kitikamispira concinna
  • †Kitikamispira multistriata
• †Kloedenella
  • †Kloedenella cornuta
  • †Kloedenella immersa
  • †Kloedenella intermedia
  • †Kloedenella nitida
• †Kloedenia
  • †Kloedenia normalis
• †Kyammodes
  • †Kyammodes swartzi

L

• †Lasiocrinus
  • †Lasiocrinus scoparius – or unidentified comparable form
• †Lecanospira
  • †Lecanospira compacta – tentative report
• †Leiorhynchus
• †Leperditia
  • †Leperditia alta
  • †Leperditia elongata
• †Leptaena
  • †Leptaena rhomboidalis – report made of unidentified related form or using admittedly obsolete nomenclature
• †Lepterditia
• †Leptodesma
  • †Leptodesma marylandica
  • †Leptodesma naviforme
  • †Leptodesma nitida
  • †Leptodesma spinerigum
  • †Leptodesma subplana – or unidentified comparable form
• †Leptostrophia
  • †Leptostrophia proutyi
• †Lesueurilla
• †Levenea
• †Lichenaria

• 

  Shell of the Cambrian-modern brachiopod Lingula

  †Lingula
  • †Lingula carbonaria
  • †Lingula gracilis
• †Linoproductus
  • †Linoproductus prattenianus
• †Liocalymene
  • †Liocalymene clintoni
• †Lobosiphon
• †Longispina
• †Lophotriletes
  • †Lophotriletes atratus
• †Loxonema
• †Lyrodesma
  • †Lyrodesma poststriatum

• 

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

  †Lysorophus
• †Lytospira

M

• †Macluritella
  • †Macluritella marylandica – type locality for species
• †Mastigobolbina
  • †Mastigobolbina arguta
  • †Mastigobolbina lata
  • †Mastigobolbina typus
• †Mcqueenoceras
• †Meekospira
  • †Meekospira percuta – or unidentified related form
• †Megamolgophis
  • †Megamolgophis agostini
• †Melanoblattula – type locality for genus
  • †Melanoblattula nigrescens – type locality for species
• †Meristina

• 

  Fossilized shell of the Carboniferous-Permian nautiloid cephalopod Metacoceras

  †Metacoceras
  • †Metacoceras marylandica – type locality for species
• †Modiolopsis
  • †Modiolopsis gregarius
  • †Modiolopsis leightoni
  • †Modiolopsis modiolaris
• †Modiomorpha
• †Monticulipora
• †Mylacris
  • †Mylacris lapsa – type locality for species
• †Mysticoceras

N

• †Narkema
  • †Narkema alternatum – type locality for species

• 

  Fossilized shell of the Early Devonian – Triassic sea snail Naticopsis

  †Naticopsis
• †Neochonetes
  • †Neochonetes granulifer
• †Neospirifer
  • †Neospirifer dunbari – tentative report
• †Nucleospira
• †Nucularca
  • †Nucularca pectunculoides
• †Nuculites
• †Nuculopsis
  • †Nuculopsis anadontoides
  • †Nuculopsis girtyi

O

• †Obolella
• †Obolus – tentative report
• †Ochetopteron – type locality for genus
  • †Ochetopteron canaliculatum – type locality for species
• †Octonaria
  • †Octonaria muricata

• 

  Restoration of the Cambrian trilobite Olenellus

  †Olenellus
• †Olethroblatta
  • †Olethroblatta lineolata – type locality for species
• †Ophileta
• †Orbiculoidea
  • †Orbiculoidea missouriensis – tentative report
• †Ormoceras
  • †Ormoceras neumani
• †Orospira
• †Orthoceras
  • †Orthoceras mackenzicum
• †Orthomylacris
  • †Orthomylacris berryi – type locality for species
  • †Orthomylacris recta – type locality for species
• †Orthonychia
  • †Orthonychia prosseri
  • †Orthonychia unguiculata
• †Orthopora
• †Orthorhynchula
  • †Orthorhynchula linneyi

P

• †Pachyblatta – type locality for genus
  • †Pachyblatta convexa – type locality for species
  • †Pachyblatta radiata – type locality for species
• †Palaeoneilo
  • †Palaeoneilo angusta
  • †Palaeoneilo brevis
  • †Palaeoneilo clarkei
  • †Palaeoneilo constricta
  • †Palaeoneilo crassa
  • †Palaeoneilo petila
  • †Palaeoneilo plana
• †Palaeozygopleura
  • †Palaeozygopleura glabra – tentative report
  • †Palaeozygopleura hamiltoniae
  • †Palaeozygopleura styliola
  • †Palaeozygopleura terebra
• †Paleonucula
  • †Paleonucula croneisi
• †Paleyoldia – type locality for genus
  • †Paleyoldia glabra
• †Paracyclas
  • †Paracyclas lirata
• †Paraechmina
  • †Paraechmina abnormis
  • †Paraechmina crassa
  • †Paraechmina depressa
  • †Paraechmina postica
  • †Paraechmina spinosa
• †Parajuresania
  • †Parajuresania nebrascensis – tentative report
• †Parallelodon
  • †Parallelodon tenuistriata
• †Patellilabia
  • †Patellilabia tentoriolum – tentative report
• †Permophorus
  • †Permophorus oblongus
• †Peronopora – tentative report
• †Pharkidonotus
  • †Pharkidonotus percarinatus
• †Pholidops
  • †Pholidops squamiformis
• †Pholidostrophia
• †Phragmosiphon
• †Phymatopleura
  • †Phymatopleura brazonensis
• †Pintopsis
• †Plagioglypta
  • †Plagioglypta annulostriata

• 

  Fossilized shell of the Silurian-Early Triassic sea snail Platyceras

  †Platyceras
  • †Platyceras marylandicum
  • †Platyceras niagarense
• †Platysiphon
• †Plectonotus
  • †Plectonotus boucoti
• †Plethobolbina
  • †Plethobolbina cornigera
  • †Plethobolbina typicalis
• †Pleurophorus
  • †Pleurophorus occidentalis
• †Pliendoceras
• †Polidevcia – type locality for genus
  • †Polidevcia bellistriata
• †Polytoechia – tentative report
• †Praenucula
  • †Praenucula lavata
• †Proterocameroceras
• †Prothyris
  • †Prothyris singewaldi – type locality for species
• †Protodouvillina
• †Psalikilus
• †Pseudoatrypa
• †Pseudorthoceras
  • †Pseudorthoceras knoxense
• †Pseudozygopleura
  • †Pseudozygopleura girtyi – or unidentified comparable form
• †Pterinea
  • †Pterinea demissa
  • †Pterinea flintstonensis

• 

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

  †Pterygotus
  • †Pterygotus marylandicus
• †Punctatisporites
  • †Punctatisporites calamites
  • †Punctatisporites glaber
  • †Punctatisporites laevigatus
  • †Punctatisporites solidus

R

• †Rafinesquina
  • †Rafinesquina alternata
  • †Rafinesquina corrugata
• †Resserella
  • †Resserella elegantula
• †Reticularia
  • †Reticularia bicostata
• †Retroclitendoceras
• †Retusotriletes
  • †Retusotriletes goensis
  • †Retusotriletes planus
  • †Retusotriletes punctatus
• †Rhabdosporites
  • †Rhabdosporites parvulus
• †Rhipidomella
• †Rhombopora – tentative report
  • †Rhombopora lepidendroides – or unidentified comparable form
• †Rhynchospirina
  • †Rhynchospirina globosa
• †Ribeiria
• †Rioceras
• †Ruedemannia – tentative report
  • †Ruedemannia lirata

S

• †Samarisporites
  • †Samarisporites grossicorrugatus – type locality for species
  • †Samarisporites grossicorugatus
• †Sansabella
• †Schellwienella
  • †Schellwienella elegans
  • †Schellwienella rugosa
  • †Schellwienella tenuis
• †Schizodus
  • †Schizodus curtus
  • †Schizodus oherni
  • †Schizodus wheeleri
• †Schuchertella
• †Serpulopsis
  • †Serpulopsis insita
• †Shansiella
  • †Shansiella carbonaria – tentative report
• †Shellwienella
  • †Shellwienella elegans

• 

  Modern specimen of the marine bivalve Solemya

  Solemya
  • †Solemya radiata
  • †Solemya trapezoides
• †Soleniscus
  • †Soleniscus primigenius
• † Solenopsis
  • †Solenopsis solenoides
• †Sowerbyella
  • †Sowerbyella serica
  • †Sowerbyella sericea
• †Spaniodera – tentative report
  • †Spaniodera simplex – type locality for species
• †Spelaeotriletes
• †Spinozonotriletes

• 

  Fossilized shell of the Late Ordovician-Late Triassic brachiopod Spirifer

  †Spirifer
  • †Spirifer disjunctus
  • †Spirifer vanuxemi
• †Stegerhynchus
  • †Stegerhynchus neglectum
• †Stenosiphon
• †Stereostylus
  • †Stereostylus profundus
• †Stichotrophia
• †Straparollus
  • †Straparollus marylandicus
• †Strobeus
  • †Strobeus paludinaeformis

• 

  Fossilized shell of the Ordovician-Silurian brachiopod Strophomena

  †Strophomena
• †Syntrophinella

T

• †Tainoceras
  • †Tainoceras monolifer
• †Tancrediopsis
  • †Tancrediopsis cuneata

• 

  Fossilized shell of the Early Ordovician-Late Devonian probable mollusc Tentaculites

  †Tentaculites
  • †Tentaculites gyracanthus
  • †Tentaculites minutus
  • †Tentaculites niagarense
  • †Tentaculites niagarensis
• †Tetralobula
• †Trigonocera
• †Trimerus
  • †Trimerus delphinocephalus
• †Tritoechia
• †Truncalosia
• †Turbonopsis
  • †Turbonopsis coronola – type locality for species

U

• †Uncinulus
  • †Uncinulus marylandicus
  • †Uncinulus obtusiplicatus
  • †Uncinulus stricklandi

V

• †Verrucosisporites
  • †Verrucosisporites rarituberculatus

W

• †Waagenella
  • †Waagenella crassus

• 

  Fossilized head of the Silurian eurypterid ("sea scorpion") Waeringopterus

  †Waeringopterus
  • †Waeringopterus cumberlandicus
• †Welleria
  • †Welleria obliqua
• †Whitfieldella
  • †Whitfieldella marylandica
• †Worthenia
  • †Worthenia castlemanensis – type locality for species

X

• †Xenelasma

Z

• †Zygobeyrichia
  • †Zygobeyrichia incipiens
  • †Zygobeyrichia tonolowayensis
  • †Zygobeyrichia ventricornis
  • †Zygobeyrichia ventripunctata
• †Zygosella
  • †Zygosella postica
• †Zygospira
  • †Zygospira modesta

References

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.