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
 * Amplexopora petasifomis.jpg †[[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
 * Atrypa reticularis pedunculate Gondelsheim CRF.jpg †[[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
 * Bellerophon umbilicalis.jpg †[[Bellerophon (genus)|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
 * Calymenidae - Calymene niagarensis.JPG †[[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
 * Cincinnetina meeki (Miller, 1875) slab 3.jpg †[[Cincinnetina]]
 * †Cincinnetina multisecta
 * †Clidophorus
 * †Clidophorus nitidus
 * †Clitendoceras
 * †Coelospira
 * †Coelospira nitens
 * †Coelospira sulcata
 * †Composita
 * †Composita ovata – tentative report
 * †Conularia
 * †Conularia niagarensis
 * †Convolutispora
 * †Convolutispora subtilis
 * †Coreanoceras
 * Cornulites cellulosus.jpg †[[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
 * SilurianTrilobite.jpg †[[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
 * The Eurypterida of New York plate 40.jpg †[[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
 * Erettopterus osiliensis.jpg †[[Erettopterus]] – tentative report
 * †Escharendoceras
 * †Euchondria
 * †Euchondria levicula – tentative report
 * †Eukloedenella
 * †Eukloedenella elongata
 * †Eukloedenella punctillosa
 * †Eukloedenella sinuata
 * †Eukloedenella sulcifrons
 * †Eukloedenella umbilicata
 * †Euomphalus
 * †Euphemites
 * †Euphemites vittatus
 * Eurypterus Paleoart.jpg †[[Eurypterus]]
 * †Eurypterus remipes
 * †Euthydesma

F

 * FavositesOrdovicianIndiana.jpg †[[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
 * Goniatitidae - Goniatites species.JPG †[[Goniatites]]
 * †Grammysia
 * †Gyrodoma
 * †Gyrodoma marylandica

H

 * †Halliella
 * †Halliella fissurella
 * †Halliella subequata
 * Hallopora multitabulata fossil bryozoan (Ordovician; Frankfort IL.jpg †[[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
 * Holopeidae - Holopea praestans.JPG †[[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
 * Isotelus brachycephalus.JPG †[[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
 * Lingula anatina 7 .JPG †[[Lingula (genus)|Lingula]]
 * †Lingula carbonaria
 * †Lingula gracilis
 * †Linoproductus
 * †Linoproductus prattenianus
 * †Liocalymene
 * †Liocalymene clintoni
 * †Lobosiphon
 * †Longispina
 * †Lophotriletes
 * †Lophotriletes atratus
 * †Loxonema
 * †Lyrodesma
 * †Lyrodesma poststriatum
 * Lysorophus.jpg †[[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
 * Metacoceras discoideum 01.jpg †[[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
 * Neritopsidae - Naticopsis.JPG †[[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
 * Olenellus NT small.jpg †[[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
 * PlatycerasLoganOhio.jpg †[[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
 * Pterygotus anglicus reconstruction.jpg †[[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
 * Solemya elarraichensis holotype.jpg [[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
 * Spirifer perlamosus pedunculate valve.jpg †[[Spirifer]]
 * †Spirifer disjunctus
 * †Spirifer vanuxemi
 * †Stegerhynchus
 * †Stegerhynchus neglectum
 * †Stenosiphon
 * †Stereostylus
 * †Stereostylus profundus
 * †Stichotrophia
 * †Straparollus
 * †Straparollus marylandicus
 * †Strobeus
 * †Strobeus paludinaeformis
 * Strophomena costellata brachial.jpg †[[Strophomena]]
 * †Syntrophinella

T

 * †Tainoceras
 * †Tainoceras monolifer
 * †Tancrediopsis
 * †Tancrediopsis cuneata
 * Tentaculitid041011.jpg †[[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
 * Waeringopterus head 3.png †[[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