List of the Paleozoic life of Michigan

Last updated April 13, 2024

This list of the Paleozoic life of Michigan contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Michigan and are between 538.8 and 252.17 million years of age.

A

† Acanthoclema
- † Acanthoclema ohioensis
† Acanthonema – type locality for genus
- † Acanthonema holopiforme – type locality for species
- † Acanthonema laxa – type locality for species
† Acidaspis
† Actinoceras
- † Actinoceras backi ^[1]
- † Actinoceras bigsbyi – or unidentified comparable form
- † Actinoceras gouldense – type locality for species^[1]
- † Actinoceras sphaeroidale ^[1]
† Alaskozygopleura
- † Alaskozygopleura gracillium
Fossilized fronds of the Carboniferous-Early Cretaceous seed fern Alethopteris
† Alethopteris
- † Alethopteris decurrens
- † Alethopteris Helenae
† Allonema
† Ambocoelia – report made of unidentified related form or using admittedly obsolete nomenclature
- † Ambocoelia umbonata – report made of unidentified related form or using admittedly obsolete nomenclature
† Ambonychia
- † Ambonychia carinata
- † Ambonychia elroyi
- † Ambonychia obesa
† Amphilichas
- † Amphilichas cucullus – tentative report
† Anazyga
- † Anazyga recurvirostra
Fossil of the Carboniferous horsetail relative Annularia
† Annularia
- † Annularia asteris
- † Annularia sphenophylloides
† Anomalodonta
- † Anomalodonta gigantea – or unidentified comparable form
† Anoptera
- † Anoptera angusta
† Anthropora
- † Anthropora shafferi
† Antirotella
- † Antirotella helicinaeformis – type locality for species
† Archinacella
- † Archinacella kagawongensis
† Arcyzona
- † Arcyzona apobathrota
† Arthroacantha
- † Arthroacantha carpenteri
† Ascodictyon
- † Ascodictyon fusiforme
† Asolanus
- † Asolanus camptotaena
† Asterophyllites
- † Asterophyllites equisetiformis
- † Asterophyllites longifolius – or unidentified comparable form
- † Asterophyllites vernensis
† Atactoechus
- † Atactoechus typicus – or unidentified comparable form
† Athyris
- † Athyris lens
- † Athyris vittata
Fossilized shell of the Late Ordovician-Carboniferous brachiopod Atrypa
† Atrypa
- † Atrypa traversensis
† Aulacera
- † Aulacera nodulifera
† Aulacotheca
- † Aulacotheca Campbelli
† Aulocystis
- † Aulocystis auloporoidea
- † Aulocystis jacksoni
- † Aulocystis lucasensis
† Aulopora
- † Aulopora microbuccinata

B

† Batostoma
† Beatricea
- † Beatricea undulata
Fossilized shell of the Silurian-Early Triassic mollusc Bellerophon
† Bellerophon
- † Bellerophon barquensis – type locality for species
- † Bellerophon newberryi
- † Bellerophon pelops
† Bensbergia
- † Bensbergia subcostata
† Bethanyphyllum
- † Bethanyphyllum robustum
† Bicarina
- † Bicarina petilitornata
† Bigalea – type locality for genus
- † Bigalea yangi – type locality for species
† Billingsites
- † Billingsites newberryi
† Bothrodendron
- † Bothrodendron minutifolium
- † Bothrodendron punctatum
† Botryllopora
- † Botryllopora socialis
† Bowmanites
† Brachyprion
† Buechelia
- † Buechelia tyrrelli
† Byssonychia
- † Byssonychia richmondensis
Bythocypris
- † Bythocypris cylindrica
† Bythopora
- † Bythopora striata

C

Fossilized stems from the Carboniferous-Permian horsetail relative Calamites
† Calamites
- † Calamites carinatus
- † Calamites cistii
- † Calamites ramosus
- † Calamites schutzeiformis
- † Calamites suckowii
- † Calamites undulatus
† Calapoecia
- † Calapoecia cribriformis
- † Calapoecia huronensis
† Callipleura
- † Callipleura nobilis – or unidentified comparable form
† Callixylon
- † Callixylon newberryi
Fossil of the Early Ordovician-Early Devonian trilobite Calymene
† Calymene
† Camarotoechia
† Cardiocaron
- † Cardiocaron reniformis
† Cardiocarpon
- † Cardiocarpon annulatum
- † Cardiocarpon bicuspidatum
- † Cardiocarpon cuyahogae
- † Cardiocarpon late-alatum
- † Cardiocarpon ovale
Fossil of the Middle-Late Ordovician trilobite Ceraurus
† Ceraurus
- † Ceraurus simmonsi
† Cerithioides
- † Cerithioides incomptum
† Cheirocrinus – tentative report
† Chonetes
- † Chonetes ensicosta
- † Chonetes hybus
- † Chonetes pachyactis
† Clathronema
- † Clathronema cingulata
† Clidophorus
- † Clidophorus noquettensis
- † Clidophorus ogontzensis
Assemblage of fossils of the Cambrian graptolite Climacograptus
† Climacograptus
- † Climacograptus putillus
† Coelospira
† Coleolus
† Colpomya
- † Colpomya colgateri
† Columnaria
- † Columnaria alveolata
- † Columnaria calicina
- † Columnaria stokesi
† Conularia
- † Conularia formosa
- † Conularia trentonensis
† Cordaianthus
- † Cordaianthus ampullaceus
- † Cordaianthus devonicus
Fossilized foliage of the Carboniferous-Permian conifer relative Cordaites
† Cordaites
- † Cordaites borassifolius
- † Cordaites crassinervis
- † Cordaites michiganensis
- † Cordaites palmaeformis
- † Cordaites principalis
- † Cordaites Robbii – tentative report
† Cornulites
- † Cornulites corrugatus
- † Cornulites flexuosus
- † Cornulites sterlingensis – or unidentified comparable form
† Corocrinus
- † Corocrinus pettyesi
† Corynepteris
- † Corynepteris coralloides – tentative report
† Cranaena
- † Cranaena amygdaloidea – or unidentified related form
- † Cranaena lincklaeni
- † Cranaena romingeri
† Crenulazona
- † Crenulazona angulata
† Cryptonella
† Ctenodonta
- † Ctenodonta iphigenia
† Cuneamya
- † Cuneamya miamiensis
† Cupularostrum
- † Cupularostrum prolificum
† Cyclonema
- † Cyclonema minuta
† Cylindrophyllum
- † Cylindrophyllum profundum
† Cymatonota
- † Cymatonota typicalis – or unidentified comparable form
† Cyrtina
- † Cyrtina alpenensis
- † Cyrtina hamiltonensis – report made of unidentified related form or using admittedly obsolete nomenclature
- † Cyrtina umbonata
† Cyrtoceras – tentative report^[1]
† Cyrtodonta
- † Cyrtodonta grandis
- † Cyrtodonta potteri
† Cyrtolites
- † Cyrtolites ornatus
† Cyrtostropha
- † Cyrtostropha salteri

D

† Dalmanella
- † Dalmanella emacerata
- † Dalmanella jugosa
† Decorochilina
- † Decorochilina robusta
† Denayella
- † Denayella bella – type locality for species
† Devonalosia
- † Devonalosia wrightorum
† Devonochonetes
- † Devonochonetes coronatus
- † Devonochonetes fragilis
- † Devonochonetes scitulus
† Dictyobembix – type locality for genus
- † Dictyobembix bella – type locality for species
† Diplothmema
† Discinites
- † Discinites delectus
- † Discinites jongmansi
† Discosorus ^[1]
- † Discosorus ehlersi – type locality for species^[1]
- † Discosorus halli – type locality for species^[1]
- † Discosorus parksi – type locality for species^[1]
- † Discosorus remotus – tentative report^[1]
† Douvillina
- † Douvillina distans
† Duncanella – tentative report

E

† Echinocaris
- † Echinocaris punctata
† Echinocoelia
† Elasmonema – tentative report
- † Elasmonema corrugata
† Eldredgeops
- † Eldredgeops rana
† Eliasopora
- † Eliasopora stellatum
† Elita
- † Elita filicosta
† Encrinurus
† Endoceras
† Eremopteris
- † Eremopteris michiganensis
Fossils (figures 2–10) of the Silurian-Devonian eurypterid ("sea scorpion") Erieopterus
† Erieopterus
- † Erieopterus microphthalmus
† Euphemites – tentative report
- † Euphemites devoniana
† Euryzone
- † Euryzone latitornata – type locality for species
- † Euryzone pharkidopyndax – type locality for species
† Euthyrhachis
- † Euthyrhachis indianense

F

Fossil of the Late Ordovician-Permian tabulate coral Favosites
† Favosites
† Ferganella
† Flexicalymene
- † Flexicalymene croneisi
- † Flexicalymene magnipapilla – type locality for species
- † Flexicalymene meeki – or unidentified comparable form
- † Flexicalymene planilabra – type locality for species
- † Flexicalymene praelongicephala – type locality for species
- † Flexicalymene quadricapita – type locality for species
- † Flexicalymene senaria
† Floweria
- † Floweria lirella

G

† Geniculograptus
- † Geniculograptus pygmaeus
† Gennaeocrinus
- † Gennaeocrinus chilmanae
- † Gennaeocrinus romingeri
† Genuspira – type locality for genus
- † Genuspira nodosa – type locality for species
† Gigantopteris
- † Gigantopteris dawsoni
- † Gigantopteris kellyi
Fossilized calyx and partial stem of the Devonian-Carboniferous crinoid ("sea lily") Gilbertsocrinus
† Gilbertsocrinus
- † Gilbertsocrinus ohioensis
† Ginkgophyllum
- † Ginkgophyllum grandifolium
† Girvanella
- † Girvanella richmondensis
† Glossograptus
† Grammysia
† Graptodictya
- † Graptodictya proava
Multiple views of a fossil of the Ordovician horn coral Grewingkia
† Grewingkia
- † Grewingkia canadensis
- † Grewingkia deltensis
† Gypidula
- † Gypidula petoskeyensis

H

Fossil of the Ordovician bryozoan ("moss animal") Hallopora
† Hallopora
- † Hallopora subnodosa
† Halysites
- † Halysites gracilis
† Hebertella
- † Hebertella alveata
- † Hebertella occidentalis
† Hederella
- † Hederella alpenensis
- † Hederella bilineata
- † Hederella cirrhosa
- † Hederella concinnoides
- † Hederella delicatula
- † Hederella filiformis
- † Hederella magna
- † Hederella parvirugosa
- † Hederella rectifurcata
- † Hederella reimanni
- † Hederella stolonifera
- † Hederella thedfordensis
- † Hederella vagans
† Helicelasma
- † Helicelasma rusticum
† Helicotoma
- † Helicotoma brocki
† Helopora
- † Helopora inexpectata
† Hercostrophia
- † Hercostrophia robusta
† Hesperorthis
- † Hesperorthis tricenaria
† Heterophrentis
- † Heterophrentis simplex
† Heterotrypa
Fossil of the Devonian colonial rugose coral Hexagonaria , also known as a Petoskey stone
† Hexagonaria
- † Hexagonaria pericarinata
† Hindia
- † Hindia subrotunda
† Hippocardia
- † Hippocardia monroica
† Hippurograptus
† Hiscobeccus
- † Hiscobeccus capax
Fossilized shells of the Ordovician-Carboniferous sea snail Holopea
† Holopea
- † Holopea hubbardi – or unidentified related form
† Holtedahlina
- † Holtedahlina sulcata
† Hormotoma
- † Hormotoma gracilis
† Hormotomina
- † Hormotomina penduliobesa
† Howellella
† Huronia ^[1]
- † Huronia annulata ^[1]
- † Huronia bigsbyi ^[1]
  - † Huronia bigsbyi intermedia – type locality for variety^[1]
- † Huronia distincta ^[1]
- † Huronia engadinensis – type locality for species^[1]
- † Huronia minuens ^[1]
- † Huronia obliqua ^[1]
- † Huronia paulodilatata ^[1]
- † Huronia romingeri ^[1]
- † Huronia turbinata ^[1]
- † Huronia minuens ^[1]
- † Huronia vertebralis ^[1]
† Huroniella ^[1]
- † Huroniella ehlersi – type locality for species^[1]
† Hyperoblastus
- † Hyperoblastus reimanni
† Hypomphalocirrus
- † Hypomphalocirrus rugosus

I

† Icriodus
- † Icriodus latericrescens
† Illionia
† Inocaulis
† Intrapora
† Isochilina
Fossil of the Middle-Late Ordovician giant trilobite Isotelus .
† Isotelus
- † Isotelus gigas

K

† Kitikamispira
- † Kitikamispira speciosum

L

† Leioclema
- † Leioclema alpenense
† Leiorhynchus
- † Leiorhynchus kelloggi
- † Leiorhynchus lucasi
† Leperditia
† Lepidocarpon
- † Lepidocarpon linear
Restoration of the Carboniferous-Late Triassic club moss relative Lepidodendron . Eli Heimans (1911).
† Lepidodendron
- † Lepidodendron aculeatum
- † Lepidodendron Brittsii
- † Lepidodendron dichotomum
- † Lepidodendron lanceolatum
- † Lepidodendron lycopodiodes
- † Lepidodendron obovatum
- † Lepidodendron obvatum
- † Lepidodendron ophiurioides
- † Lepidodendron vestitum
† Lepidostrobus
- † Lepidostrobus bartlettii
† Leptaena
† Leptalosia
- † Leptalosia radicans
† Leptobolus
- † Leptobolus insignis
† Leptolosia
- † Leptolosia radicans
† Leptotrypella
- † Leptotrypella ohioensis
† Lichenocrinus
- † Lichenocrinus tuberculatus
† Lingula
- † Lingula changi
- † Lingula cobourgensis
- † Lingula ogontzensis
- † Lingula progne – or unidentified comparable form
- † Lingula whitfieldi – or unidentified comparable form
† Liospira
- † Liospira micula
† Longispina
- † Longispina lissohybus
† Lophospira
- † Lophospira milleri
- † Lophospira perangulata – or unidentified related form
† Lyopora
- † Lyopora goldfussi

M

† Maelonoceras
- † Maelonoceras ligarius
† Manitobiella
- † Manitobiella goniostoma
† Mariopteris
- † Mariopteris muricata
- † Mariopteris nervosa
† Mastigograptus
† Mastigospira
- † Mastigospira ingens – type locality for species
- † Mastigospira intermedia – type locality for species
† Mediospirifer
- † Mediospirifer audaculus
† Megastrophia
- † Megastrophia concava
Illustration (lower right, entry 15) of a fossilized shell in front and side views of the Silurian-Late Devonian brachiopod Meristella
† Meristella
† Mesocoelia
- † Mesocoelia obstipisutura
- † Mesocoelia priscum
† Mesotrypa
† Modiolopsis
- † Modiolopsis noquettensis
- † Modiolopsis valida
† Monticulipora
- † Monticulipora epidermata
Fossilized shell of the Devonian brachiopod Mucrospirifer
† Mucrospirifer
- † Mucrospirifer attenuatus
- † Mucrospirifer grabaui
- † Mucrospirifer latus
- † Mucrospirifer mucronatus
- † Mucrospirifer profundus
- † Mucrospirifer prolificus
- † Mucrospirifer thedfordensis
† Murchisonia
- † Murchisonia akidota
- † Murchisonia anderdoniae
- † Murchisonia deludisubzona – type locality for species
- † Murchisonia dowlingii
- † Murchisonia gracilicrista
- † Murchisonia sibleyensis
- † Murchisonia subcarinata
- † Murchisonia subulata – type locality for species

N

† Naticopsis
- † Naticopsis manitobensis
Fronds of the Carboniferous seed fern Neuropteris
† Neuropteris
- † Neuropteris caudata
- † Neuropteris dilitata
- † Neuropteris flexuosa
- † Neuropteris gigntea – tentative report
- † Neuropteris harrisi – or unidentified comparable form
- † Neuropteris heterophylla – or unidentified comparable form
- † Neuropteris obliqua
- † Neuropteris rarinervis
- † Neuropteris saginawensis
- † Neuropteris scheuchzeri
- † Neuropteris Schlehani
- † Neuropteris tenuifolia
† Nodonema
- † Nodonema granulatum
† Nowakia
† Nuculites
- † Nuculites neglectus
† Nuculoidea
- † Nuculoidea lirata – or unidentified comparable form

O

† Odontopteris
† Oenonites
- † Oenonites curvidens – or unidentified related form
Fossil of the Ordovician trilobite Ogygites
† Ogygites
- † Ogygites latimarginatus
† Oligorachs
- † Oligorachs littletonensis
† Omphalocirrus
† Onchometopus
† Oncoceras
† Ophisthoptera
- † Ophisthoptera casei – or unidentified comparable form
† Ophistoloba
- † Ophistoloba gouldi
† Opisthoptera
- † Opisthoptera gouldi
- † Opisthoptera griffini
† Opisthopteri
- † Opisthopteri casei – or unidentified comparable form
† Orbiculoidea
† Ormoceras ^[1]
- † Ormoceras bayfieldi ^[1]
- † Ormoceras whitei ^[1]
† Orthoceras
- † Orthoceras alienum – or unidentified comparable form^[1]
† Orthodesma
- † Orthodesma subangulatum – or unidentified comparable form
† Orthograptus
- † Orthograptus eucharis
- † Orthograptus quadrimucronatus
- † Orthograptus truncatus
† Orthonota
- † Orthonota parvula
- † Orthonota undulata
† Orthonychia
- † Orthonychia variablis – type locality for species
† Orthopleura
- † Orthopleura B Imbrie – informal
† Oxoplecia – or unidentified comparable form
- † Oxoplecia calhouni

P

† Pachydictya
† Pagodea
- † Pagodea falcatinoda – type locality for species
† Palaeopteridium
- † Palaeopteridium Reussi
† Palaeoscurria – tentative report
† Palaeozygopleura
- † Palaeozygopleura hamiltoniae
- † Palaeozygopleura joani
- † Palaeozygopleura sibleyensis
† Paleofavosites
- † Paleofavosites asper
† Palmatopteris
- † Palmatopteris furcata
† Panenka
- † Panenka canadensis
† Papillicalymene
- † Papillicalymene husseyi – type locality for species
Assemblage of the Early-Middle Devonian brachiopod Paraspirifer
† Paraspirifer
- † Paraspirifer bownockeri
† Paupospira
- † Paupospira bowdeni
- † Paupospira tropidophora
† Pecopteris
- † Pecopteris dentata – tentative report
- † Pecopteris miltoni
† Penniretepora
- † Penniretepora irregularis – or unidentified comparable form
† Pentamerella
- † Pentamerella athyroides
- † Pentamerella aulax
- † Pentamerella papilla
- † Pentamerella pericosta
- † Pentamerella petoskeyensis
- † Pentamerella proteus
- † Pentamerella E – informal
† Pentameroides
Fossilized shell of the Silurian-Middle Devonian brachiopod Pentamerus
† Pentamerus
† Peronopora
- † Peronopora decipiens
† Petrochus
- † Petrochus conica – type locality for species
- † Petrochus mellaria – type locality for species
† Petrocrania
- † Petrocrania scabiosa
† Pholadomorpha
- † Pholadomorpha pholadiformis
† Pholidops
- † Pholidops subtruncata
† Pholidostrophia
- † Pholidostrophia geniculata
- † Pholidostrophia gracilis
- † Pholidostrophia nacrea
- † Pholidostrophia ovata
† Phragmolites
- † Phragmolites slawsoni
† Physostoma
- † Physostoma winchellii
- † Physostoma Winchellii
† Plaesiomys
- † Plaesiomys subquadrata
† Planalveolitella
- † Planalveolitella parasitica
Fossilized shell of the Silurian-Early Triassic sea snail Platyceras
† Platyceras
- † Platyceras bucculentum
- † Platyceras carinatum
- † Platyceras rarispinum
† Platystrophia
- † Platystrophia acutilirata
- † Platystrophia annieana
- † Platystrophia clarkesvillensis
- † Platystrophia clarksvillensis
- † Platystrophia cypha – or unidentified related form
- † Platystrophia moritura
† Plectambonites
- † Plectambonites rugosus
- † Plectambonites sericeus
† Plectonotus
- † Plectonotus raricostatus
Fossil of the Silurian-Carboniferous tabulate coral Pleurodictyum
† Pleurodictyum
- † Pleurodictyum cornu
† Polygnathus
- † Polygnathus varcus
† Primitia
- † Primitia cincinnatiensis
† Primitiella
- † Primitiella stoningtonensis
- † Primitiella unicornis
Proboscina
- † Proboscina auloporoides
† Productella
Restoration of the Silurian trilobite Proetus
† Proetus
- † Proetus chambliensis
† Prosserella
- † Prosserella subtransversa
† Protaraea
- † Protaraea richmondensis
† Protarea
- † Protarea richmondensis
† Protokionoceras ^[1]
† Protoleptostrophia
- † Protoleptostrophia lirella
- † Protoleptostrophia perplana
† Pseudoatrypa
- † Pseudoatrypa devoniana – or unidentified comparable form
† Pseudomphalotrochus
- † Pseudomphalotrochus cottrelli – type locality for species
- † Pseudomphalotrochus gibsoni – type locality for species
† Pseudopecopteris
- † Pseudopecopteris avoldensis – or unidentified comparable form
† Psiloconcha
- † Psiloconcha subovalis
† Pterinea
- † Pterinea demissa
- † Pterinea insueta – or unidentified related form
- † Pterinea insuetta – or unidentified related form
† Ptychomphalina
- † Ptychomphalina lucina – tentative report
† Ptychopteria
- † Ptychopteria fasciulatus
- † Ptychopteria michiganesis
- † Ptychopteria swanni
† Pugnoides

R

† Rafinesquina
- † Rafinesquina alternata
- † Rafinesquina breviusculus
- † Rafinesquina pregibbosa
† Rafinesquna
- † Rafinesquna pregibbosa
† Rectograptus
- † Rectograptus amplexicaulis
- † Rectograptus peosta
† Retispira
- † Retispira sullivani
† Rhabdocarpus
- † Rhabdocarpus mammilaris
- † Rhabdocarpus mansfieldi
- † Rhabdocarpus multistriatus
† Rhinocaris
- † Rhinocaris ehlersi
† Rhipidomella
- † Rhipidomella penelope – or unidentified comparable form
- † Rhipidomella trigona
- † Rhipidomella vanuxemi
† Rhipidothyris
- † Rhipidothyris B – informal
† Rhombotrypa
- † Rhombotrypa quadrata
- † Rhombotrypa subquadrata
† Rhynchospirina
† Rhynchotrema
- † Rhynchotrema minnesotensis – or unidentified comparable form
- † Rhynchotrema perlamellosum
† Rugomena
- † Rugomena vetusta
† Rutkowskicrinus
- † Rutkowskicrinus collieri – type locality for species
- † Rutkowskicrinus patriciae
† Rutkowskiella – type locality for genus
- † Rutkowskiella tumula – type locality for species

S

† Samaropsis
- † Samaropsis Newberryi
- † Samaropsis newberryi
Fossils of the Cambrian mollusc Scenella
† Scenella – tentative report
† Schizophoria
- † Schizophoria ferronensis
- † Schizophoria mesacarina
- † Schizophoria tulliensis
† Schuchertella
† Scutellum
† Semicoscinium
† Semipora – tentative report
- † Semipora ehlersi
† Serpulospira
- † Serpulospira diversiformis
† Sigillaria
† Sinuites
† Spermatites
- † Spermatites cylix
- † Spermatites globosus
- † Spermatites reticulatus
† Sphenophragmus
- † Sphenophragmus nanus
Fossilized leaves and branches of the Devonian-Triassic horsetail relative Sphenophyllum
† Sphenophyllum
- † Sphenophyllum bifurcatum
- † Sphenophyllum cuneifolium
- † Sphenophyllum emarginatum
- † Sphenophyllum majus
- † Sphenophyllum saxifragaefolium
† Sphenopteris
† Sphenopters
† Spinocyrtia
- † Spinocyrtia clintoni
- † Spinocyrtia euryteines – report made of unidentified related form or using admittedly obsolete nomenclature
- † Spinocyrtia granulosa
† Spinulicosta
- † Spinulicosta mutocosta
- † Spinulicosta spinulicosta
† Spinyplatyceras
- † Spinyplatyceras bartlettense
† Spirifer – report made of unidentified related form or using admittedly obsolete nomenclature
- † Spirifer consors
† Spyroceras
† Stereotoechus
- † Stereotoechus typicus – or unidentified comparable form
Life restorations of a male (foreground) and female (background) of the Late Devonian-Carboniferous Chimaera relative Stethacanthus
† Stethacanthus
- † Stethacanthus depressus
† Stictoporina
- † Stictoporina granulifera
† Stigmaria
- † Stigmaria verrucosa
† Stigmatella
† Stokesoceras ^[1]
- † Stokesoceras engadinense – type locality for species^[1]
- † Stokesoceras gracile ^[1]
- † Stokesoceras romingeri – type locality for species^[1]
† Straparollus
- † Straparollus mortoni – type locality for species
† Streblotrypa
- † Streblotrypa anomala
- † Streblotrypa hamiltonensis
† Streptelasm
- † Streptelasm rusticum
† Streptelasma
- † Streptelasma divaricans
- † Streptelasma huronensis
† Striatopora
- † Striatopora linneana
† Strobeus
- † Strobeus alternatus
† Stromatocerium
- † Stromatocerium huronense
† Stropheodonta
- † Stropheodonta demissa – or unidentified comparable form
† Strophodonta
- † Strophodonta demissa
Fossilized shell of the Ordovician-Silurian brachiopod Strophomena
† Strophomena
- † Strophomena alpenensis
- † Strophomena costata
- † Strophomena crassa
- † Strophomena elongata
- † Strophomena erratica
- † Strophomena extenuata
- † Strophomena heteromys
- † Strophomena huronensis
- † Strophomena inaequiradiata
- † Strophomena levidensa
- † Strophomena neglecta
- † Strophomena nutans – or unidentified comparable form
- † Strophomena parvula
- † Strophomena pentagonia
- † Strophomena planumbona
- † Strophomena potterensis
- † Strophomena sulcata
- † Strophomena tenuicosta
- † Strophomena titan
† Styliolina
- † Styliolina fissurella
† Sulcoretepora
- † Sulcoretepora deissi
- † Sulcoretepora incisurata
- † Sulcoretepora B – informal
Fossil of the Devonian tabulate coral Syringopora
† Syringopora

T

† Technophorus
- † Technophorus quincuncialis
Fossilized shell of the Early Ordovician-Late Devonian probable mollusc Tentaculites
† Tentaculites
- † Tentaculites bellulus
† Tetradella
- † Tetradella regularis
- † Tetradella subquadratus
† Tetradium
- † Tetradium huronense
† Thamnopora
- † Thamnopora alpenensis
- † Thamnopora magniventra – type locality for species
† Thamnoptychia
- † Thamnoptychia labyrinthica
- † Thamnoptychia minuitissima
- † Thamnoptychia silicensis
† Trematis
- † Trematis rugosa
Restoration showing the top (left) and underside of the Late Ordovician trilobite Triarthrus
† Triarthrus
- † Triarthrus eatoni
† Trigonacarpolithus
- † Trigonacarpolithus typicus
† Trigonocarpus – report made of unidentified related form or using admittedly obsolete nomenclature
- † Trigonocarpus Noeggerathi
† Trigonocarus
† Trimerella
† Trochonema
- † Trochonema wartheni
† Tropidodiscus
- † Tropidodiscus compticarinatus – type locality for species
† Tropidoleptus
- † Tropidoleptus carinatus
† Truncalosia
- † Truncalosia gibbosa
† Turbinilopsis
- † Turbinilopsis anacarina – type locality for species
† Turbonitella
- † Turbonitella trunculinoda
† Tylothyris
- † Tylothyris subvaricosa

V

† Vanuxemia
- † Vanuxemia noquerrwnaia
- † Vanuxemia strattoni
† Vladanella
- † Vladanella lirata – type locality for species

W

† Warrenella
- † Warrenella laevis – or unidentified comparable form
† Whitfieldella
† Wisconsinella
- † Wisconsinella clelandi – type locality for species

Z

† Zeilleria
- † Zeilleria stellata
† Zygospira
- † Zygospira modesta – or unidentified comparable form

References

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Foerste, A. F. (1924). Silurian Cephalopods of northern Michigan (PDF).

Uncited entries

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

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[foerste-1924-1] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 Foerste, A. F. (1924). Silurian Cephalopods of northern Michigan (PDF).

[1]

List of the Paleozoic life of Michigan

Contents

A

B

C

D

E

F

G

H

I

K

L

M

N

O

P

R

S

T

V

W

Z

References

Uncited entries