# List of the Paleozoic life of Wisconsin

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

## A

* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
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* R
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* T
* U
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* W
* X
* Y
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* †Acernaspis
* †Acheilops
* †Acheronauta- type locality of the genus
* †Acidaspis
* †Acrotreta
* †Actinoceras
* †Actinopteria
** †Actinopteria brisa
* †Actinurus
* Life restoration of the Cambrian arthropod Aglaspis †Aglaspis
* †Agraulos
** †Agraulos woosteri
* †Alveolites
* †Amphicoelia
** †Amphicoelia leidyi
* †Amphicyrtoceras
** †Amphicyrtoceras laterale
** †Amphicyrtoceras orcas
* †Amplexopora
** †Amplexopora minnesotensis
* †Amplexus
** †Amplexus fenestratus
* †Anastrophia
** †Anastrophia internascens
* †Anatolepis – tentative report
** †Anatolepis heintzi
* †Ancrinurus
** †Ancrinurus nereus
* †Antirhynchonella
** †Antirhynchonella ventricosa
* †Arcadiaspis – type locality for genus
** †Arcadiaspis bispinata – type locality for species
* †Archinacella – type locality for genus
** †Archinacella powersi – type locality for species
* Fossil of the Silurian trilobite Arctinurus †Arctinurus
* †Arctunurus
* †Arenosicaris
* †Arenosicaris- Type locality for the genus
* †Armonia
* †Ascoceras
** †Ascoceras croneisi
* †Aspeluindia
** †Aspeluindia fluegeli
* †Astraeospongium
* †Athyris
** †Athyris vittara
* †Atrpina
** †Atrpina magnaventra
* †Atrypa
** †Atrypa pronis
** Fossilized shell of the Silurian-Late Devonian brachiopod Atrypa reticularis †Atrypa reticularis – tentative report
* †Atrypina
** †Atrypina magnaventra

## B

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* †Beloitoceras – or unidentified related form
* †Billingsella
* †Bucanella
* Fossil of the Early Ordovician-Silurian trilobite Bumastus †Bumastus
** †Bumastus armatus
** †Bumastus cuniculus
** †Bumastus dayi
** †Bumastus ioxus
** †Bumastus niagarensis
** †Bumastus tenuis
* †Bumastoides
* †Burnetiella
* †(The butterfly animal)- type locality of the organism
* †Buthograptus
** †Buthograptus gundersoni – type locality for species
** †Buthograptus meyeri – type locality for species

## C

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* †Calliocrinus
** †Calliocrinus cornatus
** †Calliocrinus cornutus
** †Calliocrinus longispinus – or unidentified comparable form
* †Calvinella
** †Calvinella wisconsinensis – or unidentified comparable form
* †Calymene
** Fossil of the Silurian trilobite Calymene celebra †Calymene celebra
* †Camaraspis
* †Camerella
* †Campylorthis
** †Campylorthis deflecta
* †Capelliniella
** †Capelliniella mira
* †Caryocrinites
** †Caryocrinites ornatus – or unidentified comparable form
* †Catenipora
* †Cedaria
* †Ceratocephala
** †Ceratocephala goniata
* †Cerauromerus
** †Cerauromerus hydei
* †Ceraurus
** †Ceraurus hydei
** †Ceraurus plattinensis
* †Ceratiocaris
* †Cheirurus
** †Cheirurus niagarensis
* †Chippewaella – type locality for genus
** †Chippewaella patellitheca – type locality for species
* †ClimactichnitesIllustration of a fossil of the Cambrian-modern burrow ichnogenus Chondrites
* †Chondrites
* †Chonetes
** †Chonetes schucherti
* †Clathrospira
** †Clathrospira subconica
* †Conaspis
* †Conchidium
** †Conchidium multicostatum
* †Conocoryphe
* †Conotoma
** †Conotoma bispiralis
* †Conularia
* †Coolina
** †Coolina subplana
* †Coolinia
** †Coolinia applanata
** †Coolinia subplana
* †Coosia
* †Corbina
* †Corbinia
** †Corbinia burkhalteri – type locality for species
* Fossil of the Middle Ordovician-Carboniferous horn coral Cornulites †Cornulites
* †Corynotrypa
** †Corynotrypa abrupta
* †Cranaena
** †Cranaena subovata
** †Cranaena thomasi
* †Crateroceras
** †Crateroceras raymondi
* †Crepicephalus
* †Crotalocrinites
** †Crotalocrinites cora
* †Ctenodonta
** †Ctenodonta nasuta
* †Cupulocrinus
** †Cupulocrinus levorsoni
* †Cyathaxonia
** †Cyathaxonia wisconsinensis
* †Cyathocrinites – tentative report
** †Cyathocrinites vanhornei
* †Cycloceras
** †Cycloceras niagarense
* †Cypricardinia
** †Cypricardinia arata
* †Cyrtia
** †Cyrtia meta
* †Cyrtina
** †Cyrtina triqueira
** †Cyrtina umbonata
* †Cyrtocerina
** †Cyrtocerina crenulata – type locality for species
* †Cyrtodonta
** †Cyrtodonta huronensis
* †Cyrtorizoceras
** †Cyrtorizoceras dardanus
** †Cyrtorizoceras fosteri
** †Cyrtorizoceras lucillum
** †Cyrtorizoceras unguicurvatum
* †Cyrtospira
** †Cyrtospira ventricosus
* †Cystiphyllum
** †Cystiphyllum niagarense

## D

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* †Dalejina
* Fossil of the Late Ordovician-Middle Devonian trilobite Dalmanites †Dalmanites
** †Dalmanites illinoiensis
** †Dalmanites illinoisensis
** †Dalmanites platycaudatus
* †Dawsonoceras
** †Dawsonoceras nodocostatum
* †Decoriconus
** †Decoriconus fragilis
* †Decoroproetus
* †Deiphon
** †Deiphon americanus
* †Dendrograptus
* †Desquamatia
* †Dicellomus
* †Dicoelosia
** †Dicoelosia biloba
* †Dicranopeltis
** †Dicranopeltis decipiens
** †Dicranopeltis greeni
** †Dicranopeltis nasuta
* Illustration of the fossilized pygidium (tail segment) of the Cambrian trilobite Dikelocephalus †Dikelocephalus
** †Dikelocephalus minnesotensis
* †Dimerocrinited
** †Dimerocrinited pentangularis
* †Dimerocrinites
** †Dimerocrinites occidentalis
** †Dimerocrinites pentangularis
* †Dinobolus
** †Dinobolus conradi
* †Dinorthis
* †Diplotrypa
* †Distomodus
** †Distomodus stenolophata
* †Distyrax
* †Dolerorthis
* †Dresbachia
* †Dudleyaspis

## E

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* †Echinochiton – type locality for genus
** †Echinochiton dufoei – type locality for species
* †Elita
** †Elita subundifera
* †Ellesmeroceras
** †Ellesmeroceras hotchkissi
* Fossil of the Cambrian trilobite Ellipsocephalus †Ellipsocephalus
* †Ellsworthoconus
** †Ellsworthoconus barabuensis
* †Elrodoceras
** †Elrodoceras abnorme
* †Elvinia
* †Encrinurus
** †Encrinurus egani
** †Encrinurus nereus
** †Encrinurus reflexus
* †Entomaspis
* †Eodictyonella (formerly Dictyonella)
** †Eodictyonella reticulata
* †Eoleperditia
** †Eoleperditia fabulites
* †Eophacops
** †Eophacops handwerki
* †Eoplectodonta
* †Eospirifer
** †Eospirifer radiatus
* †Eosyringothyris
** †Eosyringothyris occidentalis
* †Eridotrypa
* †Escharopora
* †Eucalyptocrinites
** †Eucalyptocrinites crassus
** †Eucalyptocrinites depressus
** †Eucalyptocrinites nodolosus
** †Eucalyptocrinites nodulosus
** †Eucalyptocrinites ornatus
* †Eunema
** †Eunema fatua
* †Euomphalopterus
** †Euomphalopterus alatus
* †Eurekia
** †Eurekia eos – or unidentified comparable form
* †Eurychilina
** †Eurychilina subradiata

## F

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* Fossil of the Late Ordovician-Permian tabulate coral Favosites †Favosites
* †Foerstephyllum
* †Fusispira
** †Fusispira schucherti – type locality for species
** †Fusispira ventricosa

## G

* A
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* †Gabriceraurus
* †Geisonocerina
** †Geisonocerina wauwatosense
* †Glomospirella
** †Glomospirella exserta
* †Gomophocystites
** †Gomophocystites glans
* †Gomphocystites
** †Gomphocystites glans
* †Goniophora
** †Goniophora quadrilatera
* †Gyronema
** †Gyronema pulchellum – type locality for species
** †Gyronema semicarinatum

## H

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* †Hadromeros
** †Hadromeros welleri
* †Hallicystis
** †Hallicystis imago
* Fossil of the Ordovician-Silurian tabulate coral Halysites †Halysites
* †Harpidella
* †Harpidium
** †Harpidium racinensis
* †Harrisoceras
** †Harrisoceras orthoceroides
* †Hedeina
* †Helicotoma
** †Helicotoma planulata
** †Helicotoma umbilicata
* †Heliolites
* †Hesperorthis
** †Hesperorthis concava
** †Hesperorthis tricenaria
* †Heterocladus- Type locality for the genus
* †Hexameroceras
** †Hexameroceras septoris
* †Hineacrinus
** †Hineacrinus angusta – or unidentified comparable form
* †Holocystites
** †Holocystites abnormis
** †Holocystites alternatus
** †Holocystites cylindricus
* Fossilized shells of the Ordovician-Carboniferous sea snail Holopea †Holopea
** †Holopea ampla
** †Holopea guelphensis
* †Hormotoma
** †Hormotoma gracilis
* †Housia
* †Howella
* †Howellella
* †Huenella
* Fossilized shells of the Cambrian-Permian brachiopod relative Hyolitha †Hyolithes
* †Hypseloconus
* †Hypsiptycha

## I

* A
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* †Ichyocrinus
** †Ichyocrinus subangularis
* †Idahoia
* †Illaenoides
** †Illaenoides triloba
* †Illaenurus
* †Illaenus
* †Inversoceras
** †Inversoceras dayi
* †Irvingella
* †Ischadites
** †Ischadites tenuis
* †Isorthis
** †Isorthis clivosa
* Fossil of the Middle-Late Ordovician giant trilobite Isotelus. †Isotelus
** †Isotelus simplex

## J

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* †Janius
** †Janius nobilis
* †Januns
** †Januns nobilis
* †Jonesea

## K

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* Fossilized shells of the Middle Ordovician-Permian nautiloid cephalopod Kionoceras †Kionoceras
** †Kionoceras scammoni
* †Kosovopeltis
** †Kosovopeltis acamas
** †Kosovopeltis acamus
* †Krausella

## L

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* Lagenammina
* †Lambeophyllum
** †Lambeophyllum profundum
* †Lampterocrinus
** †Lampterocrinus inflatus
* †Leangella
** †Leangella dissiticostella
* †Lecanocrinus
** †Lecanocrinus waucoma
** †Lecanocrinus waukoma
* †Lechritrochoceras
** †Lechritrochoceras desplainense
* Fossil of the Late Ordovician-Middle Devonian trilobite Leonaspis †Leonaspis
* †Leperditella
** †Leperditella germana
* †Lepidocyclus
* †Leptaena
** †Leptaena depressa
** †Leptaena rhomboidalis
* †Leptodesma
** †Leptodesma actualaris
* †Leptotrypa
** †Leptotrypa hexagonalis
* †Lesueurilla
** †Lesueurilla beloitensis
* †Leurocycloceras
** †Leurocycloceras raymondi
* †Levicyathocrinites – tentative report
** †Levicyathocrinites vanhorni
* †Lingula
** †Lingula milwaukeensis
* Illustration of a fossilized shell of the Cambrian-Late Ordovician brachiopod Lingulella †Lingulella
* †Lingulepis
* †Lingulidiscina
** †Lingulidiscina marginalis
* †Linnarssonella
* †Liospira
* †Litagnostus
* †Lonchocephalus
* †Lophospira
** †Lophospira serrulata
* †Loxonema
** †Loxonema leda
* †Loxoplocus – type locality for genus
** †Loxoplocus gothlandicus
** †Loxoplocus nelsonae – type locality for species
* †Lyriocrinus – tentative report
** †Lyriocrinus melissa
* †Lysocystites
** †Lysocystites nodosus

## M

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* †Mackenziurus
** †Mackenziurus lauriae
* †Maclurina
** †Maclurina bigsbyi
* †Macropleura
** †Macropleura eudora
* †Macroscenella
** †Macroscenella superba
* †Macrostylocrinus
** †Macrostylocrinus obconicus
** †Macrostylocrinus semiradiatus – or unidentified comparable form
** †Macrostylocrinus striatus – or unidentified comparable form
* †Manespira
** †Manespira nicolleti – report made of unidentified related form or using admittedly obsolete nomenclature
* †Marsupiocrinus
** †Marsupiocrinus chagoensis
* †Maryvillia
* †Matheria
** †Matheria recta
* Fossilized plates of the Cambrian-Early Ordovician chiton Matthevia †Matthevia
* †Megamyonia
* †Megastrophia
** †Megastrophia profunda
* †Melocrinites
* †Menomonia
* †Merista
* †Meristina
* †Meroperix
* †Metaconularia
* †Metarizoceras
** †Metarizoceras brevicorne
* †Metaspyroceras
** †Metaspyroceras reudemanni
** †Metaspyroceras ruedemanni
* †Michelinoceras
* †Milaculum
* †Monocheilus
* Fossils of the Early Devonian graptolite Monograptus †Monograptus
** †Monograptus spiralis
* †Monomuchites
** †Monomuchites annularis
* †Morinorhynchus
* †Mosineia- type locality of the genus
* †Murchisonia
** †Murchisonia conradi
** †Murchisonia laphami
* †Myelodactylus
* †Mytilarca
** †Mytilarca acutirostra

## N

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* †Neozaphrentis
** †Neozaphrentis racinensis
* †Norwoodia
* †Nucleospira

## O

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* †Obolus
* †Oepikina
** †Oepikina minnesotensis
* †Onniella
* †Ophiletina
** †Ophiletina sublaxa
* †Ophioceras
** †Ophioceras wilmingtonense
* †Opikina
* †Orbicudloidea
** †Orbicudloidea telleri
* †Orbiculoidea
** †Orbiculoidea doria
* †Oriostoma
** †Oriostoma globosum
** †Oriostoma pauper
* †Orthonata
* †Orthospirifer
** †Orthospirifer milwaukeensis
* †Otarion
* †Otusia
* †Owenella
** †Owenella antiquata
* †Oxoplecia
** †Oxoplecia niagarensis
* †Ozarkodina
** †Ozarkodina polinclinata – or unidentified comparable form

## P

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* †Pagodia
* †Palaeocardia
** †Palaeocardia cordiiformis
* †Palaeoneilo
** †Palaeoneilo constricta
* †Palaeophycus
* †Panderodus
** †Panderodus gracilis
** †Panderodus greenlandensis
** †Panderodus unicostatus
* †Parioscorpio- type locality of the genus
* †Paraliospira
** †Paraliospira supracingulata – type locality for species
* †Parastophinella
** †Parastophinella multiplicata
* †Parastrophinella
** †Parastrophinella multiplicata
* Illustration of a fossilized shell in multiple views of the Paleozoic mollusc Pelagiella. †Pelagiella
* †Pemphigaspis
* †Pentamerella
** †Pentamerella multicosta
* †Pentamerus
** †Pentamerus oblongus
* †Pentlandia
** †Pentlandia glypta
* †Pentlandina
** †Pentlandina glypta
* Fossil of the Silurian-Carboniferous crinoid ("sea lily") Periechocrinus †Periechocrinus
** †Periechocrinus infelix
** †Periechocrinus necis
** †Periechocrinus uniformis
** †Periechocrinus urniformis
* †Periechorinus
* †Phanerotrema
** †Phanerotrema occidens
* †Philhedra
** †Philhedra magnacostata
* †Pholidostrophia
** †Pholidostrophia iowensis
* †Phragmoceras
** †Phragmoceras nestor
** †Phragmoceras parvum
** †Phragmoceras procerum
* †Phragmolites
** †Phragmolites triangularis
* †Pionodema
** †Pionodema conradi
* †Pisocrinus
* Fossilized shell of the Ordovician brachiopod Plaesiomys †Plaesiomys
* †Plagiostomoceras
* †Planolites
* †Platyceras
** †Platyceras niagarensis
** †Platyceras wisconsinensis – type locality for species
* †Platystrophia
** †Platystrophia biforata
* †Plectatrypa
** †Plectatrypa imbricata
* †Plectodonta
* †Plethopeltis
* †Pleurodictyum
* Fossilized shell of a Pleurotomaria slit snail Pleurotomaria
** †Pleurotomaria perlata
* †Polygnathoides
* †Polygrammoceras
* †Praenucula
* †Primitella
** †Primitella constricta
* †Proagnostus
* †Proetus
** †Proetus handwerki
* †Promelocrinus
** †Promelocrinus obpramidalis
** †Promelocrinus obpyramidalis
* †Proplina – tentative report
** †Proplina extensum
* †Prosolarium
** †Prosolarium halei
* †Protokionoceras
** †Protokionoceras medullare
* †Protomegastrophia
* †Prozacompsus
* †Pseudagnostus
* †Pseudooneotodus
** †Pseudooneotodus beckmanni
** †Pseudooneotodus bicornis
* †Ptychaspis
* †Ptychocaulus
** †Ptychocaulus bivittata
* †Ptychopleurella
* †Pycnocrinus
** †Pycnocrinus gerki
* †Pycnomphalus
** †Pycnomphalus solarioides

## R

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* †Rafinesquina
* †Rasettia
* †Reserella
** †Reserella canalis
* †Resserella
** †Resserella canalis
* †Reticulatrypa
* †Rhombopteria
* †Rhynchotrema
* †Rhynchotreta
* Rostricellula
** †Rostricellula minnesotensis
* †Ruedemannia
** †Ruedemannia lirata
** †Ruedemannia robusta
* †Rusosa

## S

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* †Sactorthoceras
** †Sactorthoceras depressum
* †Saffordia
* †Salmanites
** †Salmanites platycaudatus
* †Salpingostoma
** †Salpingostoma buelli
* †Saukia
* Fossil of the Cambrian-Ordovician trilobite Saukiella †Saukiella
* †Scaevogyra
* †Scharyia
* †Schizonema
* †Schizopea
* †Schizophoria
** †Schizophoria iowensis
** †Schizophoria lata
* †Schmidtella
** †Schmidtella crassimarginata
* †Scotoharpes
** †Scotoharpes telleri
* †Scutellum
* †Similodonta
* †Sinuites
** †Sinuites cancellatus
** †Sinuites rectangularis – type locality for species
* †Sinuopea
** †Sinuopea sweeti – type locality for species
* †Siphonocrinus
** †Siphonocrinus armosus
** †Siphonocrinus nobilis
** †Siphonocrinus nobilus
* †Skenidioides
** †Skenidioides anthonensis
* Fossils of the Cambrian-modern worm burrow ichnogenus Skolithos †Skolithos
* †Sowerbyella
* †Sphaerexochus
** †Sphaerexochus roemingeri
** †Sphaerexochus romingeri
* †Sphaerirhynchia
* †Sphooceras
* †Spinatrypa
** †Spinatrypa hystrix
** †Spinatrypa spinosa
* †Spinocyrtia
** †Spinocyrtia iowensis
* †Spirodentalium
** †Spirodentalium osceola – type locality for species
* †Staurocephalus
** †Staurocephalus obsoleta
* †Stegerhynchus
* †Stenopareia
** †Stenopareia imperiator
* †Stenopilus
* †Stephanocrinus
** †Stephanocrinus osgoodensis
* †Stictopora
** †Stictopora trentonensis
* †Straparollus
** †Straparollus mopsus
** †Straparollus paveyi
* †Streptelasma
* †Striispirifer
* †stromatoporoids
* Fossilized shell of the Ordovician-Silurian brachiopod Strophomena †Strophomena
** †Strophomena costata
** †Strophomena halli
** †Strophomena plattinensis
* †Strophostylus
** †Strophostylus elevatus
* †Subulites
** †Subulites beloitensis – type locality for species

## T

* 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
* †Taenicephalus
* †Tancrediopsis
* †Tellerina
* †Tetranota
** †Tetranota sexcarinata
** †Tetranota wisconsinensis
* †Thalassinoides
* †Thaleops
* Thurammina
** †Thurammina polygona
* Life restoration of the Silurian arthropod Thylacares †Thylacares – type locality for genus
** †Thylacares brandonensis – type locality for species
* †Tremanotus
** †Tremanotus angustata
* †Trocholites
* †Trochonema
** †Trochonema beachi – tentative report
** †Trochonema beloitense
* †Trochurus
** †Trochurus welleeri
** †Trochurus welleri
* †Tylothyris
** †Tylothyris subvaricosa

## U

* 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
* †Uranoceras
** †Uranoceras hercules

## 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
* †Vanuxemia
* †Virgiana
** †Virgiana mayvillensis
* †Venustulus (Type locality of the genus)

## 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
* †Walliserodus
** †Walliserodus curvatus
* †Westonia
* †Whitfieldella
* †Whitfieldoceras
* †Whitfieldia
* †Wilbernia
* †Wisconsinella – type locality for genus
** †Wisconsinella clelandi – type locality for species
* †Woosteroceras
** †Woosteroceras trempealeauense
* †Wurmiella
** †Wurmiella excavata

## Z

* 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
* †Zaphrenthis
** †Zaphrenthis racinensis
* †Zophocrinus – tentative report