Fossil Invertebrates Diversity

Photos of specimens in the the Fossil Invertebrate collection highlighting their amazing biodiversity.

Note: the yellow scale bar represents 1 cm in all the photos.

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Brachiopoda - Rhynchonellata - Terebratulida

Magellania sp.
Specimen P 28814

Patagonian beds

Cenozoic - Paleogene - Eocene

Santa Cruz, Argentina

Bryozoa - Stenolaemata - Cystoporata

Ceramoporella ohioensis
This specimen is the holotype of Ceramopora concentrica which was later determined to be a synonym of Ceramoporella ohioensis.
Specimen UC 233

Utica Shale

Paleozoic - Middle Ordovician

Cincinnati, Ohio

Brachiopoda - Rhynchonellata - Orthida

Diceromyonia storeya
Specimen PE 11058

Upper Bighorn Formation - "Rock Creek beds"

Paleozoic - Late Ordovician

Johnson County, Wyoming

Annelida - Polychaeta - Phyllodocida

Dryptoscolex matthiesae
Specimen PE 12491

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years old)

Mazon Creek Area, Illinois

Echiura -
(spoon worms)

Coprinoscolex ellogimus
Specimen PE 12964

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years old)

Mazon Creek Area, Illinois

Problematica

Tullimonstrum gregarium Richardson 1966
(Tully Monster)
Specimen PE 13867

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years old)

Mazon Creek Area, Illinois

Nematoda -
(ribbon worms)

Nemavermes mackeei
Specimen PE 21551

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years old)

Mazon Creek Area, Illinois

Annelida - Polychaeta - Eunicida

Esconites zelus
Specimen PE 22881

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years old)

Mazon Creek Area, Illinois

Annelida - Polychaeta - Phyllodocida

Rutellifrons wolfforum
Specimen PE 22898

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years old)

Mazon Creek Area, Illinois

Sipunculoida -
(peanut worms)

Lecthaylus gregarius
Specimen PE 31533-2

Racine Formation - Lecthaylus Shale

Paleozoic - Silurian - Niagaran
(~420 million years ago)

Chicago area, Illinois

Echiura -
(spoon worms)

Coprinoscolex ellogimus
Specimen PE 32583

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years old)

Mazon Creek Area, Illinois

Annelida - Polychaeta - Phyllodocemorpha
(bristle worms)

Levisettius sp.
Specimen PE 33384

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years old)

Mazon Creek Area, Illinois

Cnidaria - Anthozoa - Tabulata

Michelinia favosoidea
(honeycomb coral)
Specimen UC 12913

Onondaga Formation

Paleozoic - Middle Devonian

Port Colborne, Ontario, Canada

Porifera - Hexactinellida - Reticulosa
(glass sponge)

Hydnoceras hypastrum
Specimen UC 13154

Chemung Group

Paleozoic - Late Devonian

Steuben County, New York

Porifera - Hexactinellida - Reticulosa
(glass sponge)

Hydnoceras Avoca
Specimen UC 14399 (holotype)

Chemung Group

Paleozoic - Late Devonian

Avoca, Steuben County, New York

Bryozoa - Stenolaemata - Fenestrida

Polypora cultellata
Previously Fenestella cultellata (syntype)
Specimen UC 14016

Jeffersonville Limestone

Paleozoic - Middle Devonian

Falls of the Ohio, Indiana & Kentucky

Bryozoa - Stenolaemata - Cystoporata

Constellaria florida
Specimen UC 17494

Fairview Formation - Mt. Hope Member

Paleozoic - Late Ordovician

Covington, Kentucky

Bryozoa - Stenolaemata - Trepostomida

Batostoma minnesotense
Specimen UC 17503

Decorah Formation - "Rhinidictya beds"

Paleozoic - Late Ordovician

Minneapolis, Minnesota

Porifera - Hexactinellida - Reticulosa
(glass sponges)

Uphantaenia chemungensis
Specimen UC 18696

Chemung Group

Paleozoic - Late Devonian

Owego, New York

Cnidaria - Anthozoa - Rugosa

Pachyphyllum woodmani
Specimen UC 26016

Lime Creek Formation

Paleozoic - Late Devonian

Hackberry Grove, Iowa

Bryozoa - Stenolaemata - Fenestrata

Archimedes symmetricus
(corkscrew bryozoan)
Specimen UC 28227

Paint Creek Limestone

Paleozoic - Mississippian

Princeton, Kentucky

Cnidaria - Anthozoa - Rugosa

Prismatophyllum percarinatum
Specimen UC 38750

Paleozoic - Middle Devonian

Emmet County, Michigan

Brachiopoda - Rhynchonellata - Rhynchonellida

Hiscobeccus capax
Previously (Lepidocyclus capax)
(Atrypa capax)
Specimen PE 16568

Tanner's Creek Formation

Paleozoic - Late Ordovician

Abington, Indiana

Brachiopoda - Rhynchonellata - Pentamerida

Pentamerus oblongus
Specimen PE 53958-A

Red Mountain Formation

Paleozoic - Silurian

Jefferson County, Alabama

Brachiopoda - Rhynchonellata - Spiriferida

Imbrexia incertus
Previously Spirifer incertus
Specimen UC 8620

Burlington Limestone

Paleozoic - Mississippian

Burlington, Iowa

Brachiopoda - Rhynchonellata - Orthida

Dinorthis occidentalis
Previously Plaesiomys occidentalis
Specimen UC 11047

Upper Bighorn Formation - "Rock Creek beds"

Paleozoic - Late Ordovician

Johnson County, Wyoming

Brachiopoda - Rhynchonellata - Pentamerida

Kirkidium laqueatum
Previously (Conchidium laqueatum)
Specimen UC 12329

Paleozoic - Silurian -Niagaran
(~420 million years ago)

Delphi, Indiana

Brachiopoda - Rhynchonellata - Pentamerida

Pentamerus oblongus
Specimen UC 13212

Paleozoic - Silurian - Niagaran
(~420 million years ago)

Northern Indiana?

Brachiopoda - Rhynchonellata - Spiriferida

Anthracospirifer bifurcatus
Previously (Spirifer bifurcatus)
Specimen UC 13520

St. Louis Group

Paleozoic - Mississippian

New Providence, Indiana

Brachiopoda - Strophomenata - Productida

Echinoconchus alternata
Previously (Pustula alternata)
Specimen UC 14318

Keokuk Formation

Paleozoic - Mississippian

Warsaw, Illinois

Brachiopoda - Strophomenata - Strophomenida

Rafinesquina alternata
Specimen UC 29379

Paleozoic - Late Ordovician
(~450 Million years ago)

Minooka, Illinois

Arthropoda - Myriapoda - Arthropleuridea

Arthropleura cristata
Specimen PE 5262

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek Area, Illinois

Arthropoda - Myriapoda - Diploda
(millipedes)

Hexecontasoma carinatum
Specimen PE 23487

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek Area, Illinois

Arthropoda - Myriapoda - Diploda - Euphoberiida
(millipedes)

Acantherpestes major
Specimen PE 25432

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek Area, Illinois

Onychophora -
(velvet worms)

Helenodora inopinata
Specimen PE 29049

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek Area, Illinois

Arthropoda - Insecta - Blattodea
(cockroaches)

Adeloblatta columbiana
Specimen PE

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek Area, Illinois

Arthropoda - Insecta - Blattodea
(cockroaches)

Adeloblatta columbiana
previously Progonoblattina columbiana
Specimen UC 6388

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek Area, Illinois

Arthropoda - Euthycarcinoidea - Euthycarcinoida
(extinct group)

Kottixerxes gloriosus
Specimen PE 27874

Carbondale Formation - Francis Creek Shale

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek area, Illinois

Arthropoda - Insecta - "Protorthoptera"

Eucaenus mazonus
Specimen UC 9243

Carbondale Formation - Francis Creek Shale

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek area, Illinois

Brachiopoda - Rhynchonellata - Spiriferida

Paraspirifer bownockeri
previously Spirifer bownockeri
Specimen UC 36158 (topotype)

Silica Shale

Paleozoic - Middle Devonian

Silica, Ohio

Brachiopoda - Rhynchonellata - Orthida

Onniella meeki
Specimen UC 16542

Tanner's Creek Formation

Paleozoic - Upper Ordovician

Brookfield, Indiana

Mollusca - Gastropoda -
(snails)

Platystomata turbinata
Specimen UC 11758 (cotype)

Onondaga Limestone

Paleozoic - Middle Devonian

Onondaga County, New York

Mollusca - Gastropoda -
(snails)

Platystoma turbinata
Specimen UC 11757

Onondaga Limestone

Paleozoic - Middle Devonian

Onondaga County, New York

Arthropoda - Euthycarcinoidea - Euthycarcinoida

Kottixerxes gloriosus
Specimen PE 27873

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek Area, Illinois

Arthropoda -Myriapoda - Chilopoda
(centipedes)

Mazoscolopendra richardsoni
Specimen PE 29002 (paratype)

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek Area, Illinois

Arthropoda -Myriapoda -Diplopoda
(millipedes)

Pleurojulus sp.
Specimen PE 32282

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek Area, Illinois

Arthropoda - Chelicerata - Xiphosurida

Euproops danae
Specimen P 29181

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 Million years ago)

Mazon Creek Area, Illinois

Arthropoda - Crustacea - Malacostraca

Kallidecthes richardsoni
Specimen PE 12308

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 Million years ago)

Mazon Creek Area, Illinois

Arthropoda - Myriapoda -Diplopoda

Eileticus aequalis
Specimen PE 789

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 Million years ago)

Mazon Creek Area, Illinois

Arthropoda - Crustacea -Malacostraca

Kallidecthes richiardsoni
Specimen PE 9771

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 Million years ago)

Mazon Creek Area, Illinois

Arthropoda - Crustacea - Malacostraca

Mamayocaris jaskowskii
Specimen PE 25499

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 Million years ago)

Mazon Creek Area, Illinois

Arthropoda - Crustacea - Malacostraca

Tyrannophontes theridion
(mantis shrimp)
Specimen PE 25507

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 Million years ago)

Mazon Creek Area, Illinois

Arthropoda - Trilobita - Ptychopariida

Elrathia kingii
Specimen PE 25610

Paleozoic - Middle Cambrian

Wheeler Formation

Millard County, Utah

Arthropoda - Trilobita - Ptychopariida

Elrathia kingii
Specimen PE 25610

Paleozoic - Middle Cambrian

Wheeler Formation

Millard County, Utah

Arthropoda - Trilobita - Phacopida

Diacalymene clavicula
Specimen PE 25639

Hunton Group - Henryhouse Formation

Paleozoic - Silurian

Ada, Oklahoma

Arthropoda - Chelicerata - Eurypterida

Adelophthalmus mazonensis
Specimen PE 32377

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 Million years ago)

Mazon Creek Area, Illinois

Arthropoda - Chelicerata - Eurypterida

Adelophthalmus mazonensis
Specimen PE 32378

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 Million years ago)

Mazon Creek Area, Illinois

Arthropoda - Crustacea - Malacostraca

Belotelson sp.
Specimen PE 34275

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 Million years ago)

Mazon Creek Area, Illinois

Arthropoda - Crustacea - Malacostraca

Palaeocaris typus
Specimen PE 37976

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 Million years ago)

Mazon Creek Area, Illinois

Arthropoda - Trilobita - Phacopida

Calymene celebra
Specimen PE 39218

Racine Formation

Paleozoic - Silurian

Milwaukee, Wisconsin

Arthropoda - Trilobita - Phacopida

Calymene celebra
Specimen PE 39218

Racine Formation

Paleozoic - Silurian

Milwaukee, Wisconsin

Arthropoda - Insecta - Palaeodictyoptera

Eubleptus danielsi
Specimen PE 40223

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 Million years ago)

Mazon Creek Area, Illinois

Arthropoda - Chelicerata - Arachnida

Triangulotarbus terrehautensis
Specimen PE 40269

Lower Shelburn Foramtion - Sandy Shale Member

Paleozoic - Middle Pennsylvanian
(~305 Million years ago)

Terre Haute, Indiana

Arthropoda - Trilobita - Phacopida

Dalmanites limuloides
Specimen PE 56128

Rochester Shale

Paleozoic - Silurian - Wenlockian

Lockport, New York

Arthropoda - Trilobita - Phacopida

Greenops boothi
Specimen PE 56147

Ludlowville Formation - Ledyard Shale Member - Alden Pyrite Bed

Paleozoic - Middle Devonian - Givetian

Alden, New York

Arthropoda - Trilobita - Phacopida

Greenops stellifer
Specimen PE 56151

Hamar Laghdad Formation

Paleozoic - Early Devonian

Southeast of Erfoud, Morocco

Arthropoda - Insecta - Diptera - Bibionidae

Plecia pealei
(march fly)
Specimen PE 60929

Green River Formation - Fossil Butte Member

Cenozoic - Paleogene - Eocene

Kemmerer, Wyoming

Arthropoda - Insecta - Hymenoptera
(ants, bees, wasps)

unidentified hymenopterid
Specimen PE 60938

Green River Formation - Fossil Butte Member

Cenozoic - Paleogene - Eocene

Kemmerer, Wyoming

Arthropoda - Insecta - Diptera

unidentified tipulid
(crane fly)
Specimen PE 60946

Green River Formation - Fossil Butte Member

Cenozoic - Paleogene - Eocene

Kemmerer, Wyoming

Arthropoda - Chelicerata - Arachnida

Kustarachne sulcata
Specimen UC 9235

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek, Illinois

Arthropoda - Chelicerata - Eurypterida

Carcinosoma newlini
Previously Eusarcus newlini
Specimen UC 12900

Kokomo Dolomite

Silurian
(~418 million years ago)

Kokomo, Indiana

Arthropoda - Chelicerata - Eurypterida

Carcinosoma newlini
Previously Eusarcus newlini
Specimen UC 12901

Kokomo Dolomite

Silurian
(~418 million years ago)

Kokomo, Indiana

Arthropoda - Chelicerata - Eurypterida

Carcinosoma newlini
Previously Eusarcus newlini
Specimen UC 12900 (plesiotypes)

Kokomo Dolomite

Silurian
(~418 million years ago)

Kokomo, Indiana

Arthropoda - Dinocaridida - Radiodonta

Anomalocaris sp.
Previously Peytonia nathorsti
Originally thought to be a jellyfish now is known to be the mouthpart of Anomalocaris.
Specimen UC 24020

Stephen Formation - Burgess Shale Member

Paleozoic - Middle Cambrian

British Columbia, Canada

Annelida - Polychaeta -

Canadia spinosa
Specimen UC 24026

Stephen Formation - Burgess Shale Member

Paleozoic - Middle Cambrian

British Columbia, Canada

Arthropoda - Trilobita - Asaphida

Thysanopyge argentina
Specimen PE 6164

Paleozoic - Ordovician

Argentina

Arthropoda - Trilobita - Asaphida

Ogygites canadensis
Specimen PE 25586

Collingswood Formation

Paleozoic - Ordovician

Collingswood, Ontario, Canada

Arthropoda - Trilobita - Asaphida

Ogygites canadensis
Specimen PE 25586

Collingswood Formation

Paleozoic - Ordovician

Collingswood, Ontario, Canada

Arthropoda - Trilobita - Asaphida

Pseudogygites latimarginatus
Specimen PE 56130

Lower Whitby Formation

Paleozoic - Late Ordovician

Ontario, Canada

Echinodermata - Diploporita -

Triamara tumida
Specimen P 8424

Paleozoic - Silurian

Romeo, Illinois

Echinodermata - Acroechinoidea - Spatangoida

Linthia variabilis
Specimen P 10458

Ripley Group

Mesozoic - Cretaceous

Pontotoc, Mississippi

Arthropoda - Trilobita - Phacopida

Phacops handwerki
Specimen PE 10xx9

Racine Formation

Paleozoic - Silurian -Niagaran

Lemont, Illinois

Echinodermata - Holothuroidea - Apodida - Achistridae

Achistrum sp.
Specimen PE 20866

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 Million years ago)

Mazon Creek Area, Illinois

Echinodermata - Echinoidea - Camarodonta

Isechinus praecursor
Specimen PE 22297-B

Patagonian beds

Cenozoic - Paleogene - Eocene

Santa Cruz, Argentina

Echinodermata - Edrioasteroidea -

Savagella illinoisensis
Specimen PE 25563

Orchard Creek Formation

Paleozoic - Late Ordovician

Thebes, Illinois

Echinodermata - Asteroidea - Ambuloasteroidea

Compsaster formosus
Specimen PE 28991

Renault Formation

Paleozoic - Mississippian

Waterloo, Illinois

Echinodermata - Asteroidea - Ambuloasteroidea
(starfish or sea stars)

Compsaster formosus
Specimen PE 28996

Renault Formation

Paleozoic - Mississippian

Waterloo, Illinois

Arthropoda - Trilobita - Agnostida

Peronopsis interstricta
Specimen PE agnostid

Wheeler Formation

Paleozoic - Middle Cambrian

Millard County, Utah

Arthropoda - Trilobita - Agnostida

Peronopsis interstricta
Specimen PE agnostid

Wheeler Formation

Paleozoic - Middle Cambrian

Millard County, Utah

Echinodermata - Asteroidea -

Petraster americanus
Specimen UC 2465

Cincinnatian Group

Paleozoic - Late Ordovician

Cincinnati, Ohio

Echinodermata - Diploporita -

Triamara tumida
Previously described as Holocystites adipatusas (holotype)
Specimen UC 6020

Osgood Formation ??

Paleozoic - Silurian - Niagaran

Jefferson County, Indiana

Echinodermata - Rhombifera -

Caryocrinites indianensis
Specimen UC 6028

Paleozoic - Silurian - Niagaran

Jefferson County, Indiana

Echinodermata - Blastoidea - Fissiculata

Orophocrinus stelliformis
Specimen UC 6366

Burlington Formation

Paleozoic - Mississippian

Burlington, Iowa

Echinodermata - Edrioasteroidea - Isorophida

Agelacrinites pulaskensis
Specimen UC 6419

Paleozoic - Late Ordovician

Pulaski County, Kentucky

Echinodermata - Echinoidea - Palaechinoida

Oligoporus sulcatus
Specimen UC 6623

St. Louis Limestone

Paleozoic - Mississippian

Harding County, Kentucky

Echinodermata - Edrioasteroidea -Isorophida

Carneyella pilea
Specimen UC 8825

Maysville Formation

Paleozoic - Late Ordovician

Cincinnati, Ohio

Echinodermata - Blastoidea -

Elaeacrinus verneuili
Specimen UC 9956

Onondaga Formation

Paleozoic - Middle Devonian

Jeffersonville, Indiana
(Falls of the Ohio)

Echinodermata - Diploporita -

Holocystites alternatus
Specimen UC 18061

Osgood Formation ??

Paleozoic - Silurian - Niagaran

Jefferson County, Indiana

Echinodermata - Diploporita

Gomphocystites bownockeri
Specimen UC 22943

Racine Formation ??

Paleozoic - Silurian - Niagaran

Chicago, Illinois

Echinodermata - Blastoidea - Spiraculata

Pentremites nodosus
Specimen UC 25150

Lower Okaw (Golconda Limestone)

Paleozoic - Mississippian

Marigold, Illinois

Echinodermata - Blastoidea - Spiraculata

Pentremites godoni
Specimen UC 25351

Paint Creek Shale

Paleozoic - Mississippian

Horaville, Illinois

Echinodermata - Echinoidea - Archaeocidaridae

Nortonechinus welleri
Specimen UC 34711

Lime Creek Formation

Paleozoic - Late Devonian

Rockford, Iowa

Echinodermata - Edrioasteroidea -Isorophida

Carneyella pilea
Specimen UC 54070

Paleozoic - Late Ordovician

Cincinnati, Ohio

Mollusca - Gastropoda -

Platystoma Shumardi
Specimen P 20623

Jeffersonville Limestone ???

Paleozoic - Middle Devonian

Falls of the Ohio, Indiana & Kentucky

Mollusca - Bivalvia - Arcoida

Glycymerita camaronesia
Specimen P 28796

Patagonian beds

Cenozoic - Paleogene - Eocene

Santa Cruz, Argentina

Mollusca - Gastropoda -Neogastropoda - Muricidae

Purpura chicoana
Specimen P 28798

Patagonian beds

Cenozoic - Paleogene - Eocene

Punta Casamayor, Santa Cruz, Argentina

Mollusca - Gastropoda -Neogastropoda - Muricidae

Purpura chicoana
Specimen P 28798

Patagonian beds

Cenozoic - Paleogene - Eocene

Punta Casamayor, Santa Cruz, Argentina

Mollusca - Gastropoda - Murchisoniina - Hormotomidae

Hormotoma rotundivolvis
Specimen P 28842

Paleozoic - Late Ordovician - Richmondian

Frobisher Bay, Baffin Island, Nunavut, Canada

Mollusca - Bivalvia - Pholadomyoida - Edmondiidae

Edmondia aspinwallensis
Specimen PE 22318

Carbondale Formation, Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek Area, Illinois

Mollusca - Bivalvia - Arcoida - Cucullaeidae

Cucullaea marshalli
Specimen PE 28809

Patagonian beds

Cenozoic - Paleogene - Eocene

Santa Cruz, Argentina

Mollusca - Bivalvia - Pholadomyoida - Edmondiidae

Edmondia sp.
Specimen PE 35631

Carbondale Formation, Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek Area, Illinois

Mollusca - Gastropoda - Sorbeoconcha - Turritellidae

Turritella etiwanensis
Specimen PE 56825

Cenozoic - Paleogene - Eocene

Florida

Mollusca - Bivalvia - Pholadomyoida - Edmondiidae

Edmondia sp.
Specimen PE 56926

Above Croweburg Coal

Paleozoic - Middle Pennsylvanian

Windsor, Missouri

Mollusca - Gastropoda -

Goniobasis sp.
Specimen PE 60131

Green River Formation - Fossil Butte Member

Cenozoic - Paleogene - Eocene

Kemmerer, Wyoming

Mollusca - Bivalvia - Arcoida - Cucullaeidae

Cucullaea marshalli
Specimen PE 288096-C

Jaliense

Cenozoic - Paleogene - Eocene

Santa Cruz, Argentina

Mollusca - Cephalopoda - Ceratitida - Ceratitidae

Ceratites hersheyi
Specimen PE

Mesozoic - Middle Triassic - C. trinodosus Zone

Fossil Hill, West Humboldt Range, Nevada

Mollusca - Gastropoda - Euomphalina

Poleumita? discoidea
Specimen UC 2879 (holotype)

Guelph Formation

Paleozoic - Silurian

Thornton, Illinois

Mollusca - Gastropoda - Euomphalina - Platyceratidae

Platyceras niagarensis
Specimen UC 4655

Racine Formation?

Paleozoic - Silurian - Niagaran

Chicago, Illinois

Mollusca - Cephalopoda - Ammonoidea - Scaphitidae

Rhaeboceras halli
Previously named Ammonites opalus (type)
Specimen UC 6377

Mesozoic - Cretaceous

Great Bend of the Missouri River, Montana

Mollusca - Cephalopoda - Goniatitida - Prodromitidae

Prodromites gorbyi
Specimen UC 6474

Chouteau Limestone

Paleozoic - Mississippian

Pettis County, Missouri

Mollusca - Cephalopoda - Goniatitida - Prodromitidae

Prodromites gorbyi
Specimen UC 6474

Chouteau Limestone

Paleozoic - Mississippian

Pettis County, Missouri

Mollusca - Gastropoda - Cyrtoneritimorpha - Orthonychiidae

Igoceras fissurella
Specimen UC 6929

Keokuk Group

Paleozoic - Mississippian

Warsaw, Illinois

Mollusca - Gastropoda - Neritopsina - Naticopsidae

Naticopsis giganteus
Specimen UC 10526

Paleozoic - Pennsylvanian

Alton, Illinois

Mollusca - Gastropoda - Euomphalina - Platyceratidae

Platyceras erectum
Specimen UC 11761

Hamilton Group

Paleozoic - Middle Devonian

Geneseo, New York

Mollusca - Gastropoda - Euomphalina - Euomphalidae

Straparollus magnus
Specimen UC 18104 (holotype)

Guelph Formation

Paleozoic - Silurian

Hawthorne, Illinois

Mollusca - Gastropoda - Murchisoniina - Lophospiridae

Worthenia tabulata
Specimen UC 23068

Gunsight Shale
(Gunsight Limestone of the Cisco Group??)

Paleozoic - Late Pennsylvanian

Gunsight, Texas

Mollusca - Gastropoda - Euomphalina - Platyceratidae

Strophostylus allani
Specimen UC 27509

Little Saline Limestone

Paleozoic - Mississippian

Little Saline Creek, Missouri

Echinodermata - Crinoidea - Diplobathrida

Lampterocrinus? sp.
Specimen P 8866

Racine Formation?

Paleozoic - Silurian - Niagaran
(~420 million years ago)

Romeo, Illinois

Mollusca - Gastropoda - Euomphalina - Euomphalidae

Euomphalus sp.
Specimen PE 2924

Racine Foramtion?

Paleozoic - Silurian - Niagaran

Chicago?, Illinois

Mollusca - Gastropoda - Euomphalina - Euomphalidae

Poleumita sp.
Specimen PE 4336

Racine - Port Byron formations

Paleozoic - Silurian - Niagaran

Thornton, Illinois

Mollusca - Cephalopoda - Goniatitida - Wiedeyoceratidae

Wiedeyoceras sp.
Specimen PE 11157

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek Area, Illinois

Mollusca - Cephalopoda - Bactritida - Bactritidae

Bactrites sp.
Specimen PE 25584

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek Area, Illinois

Cnidaria - Hydrozoa - Hydroida

Mazohydra sp.
Specimen PE 32074

Carbondale Formation - Francis Creek Shale Member

Paleozoic - Middle Pennsylvanian
(~305 million years ago)

Mazon Creek Area, Illinois

Mollusca - Cephalopoda - Nautiloidea

Kionoceras cancellatum
Specimen UC 18124

Port Byron Formation

Paleozoic - Silurian - Niagaran

Bridgeport, Illinois

Mollusca - Bivalvia -

Amphicoelia neglecta
Specimen UC 21873

Racine Formation?

Paleozoic - Silurian - Niagaran

Bridgeport, Illinois

Mollusca - Bivalvia -

Amphicoelia neglecta
Specimen UC 21873

Racine Formation?

Paleozoic - Silurian - Niagaran

Bridgeport, Illinois

Cnidaria - Anthozoa - Favositida - Favositidae

Favosites hisingeri
Specimen P 478

Racine Formation?

Paleozoic - Silurian - Niagaran

Hawthorne, Illinois

Brachiopoda - Strophomenata - Orthotetida - Chilidiopsidae

Coolinia subplana
Previously named: Orthothetes subplanus
Specimen P 5097

Racine Formation?

Paleozoic - Silurian - Niagaran

Chicago, Illinois

Brachiopoda - Rhynchonellata - Pentamerida - Pentameridae

Kirkidium knighti
Previously identified as Conchidium sp.
Specimen P 16393

Racine Formation?

Paleozoic - Silurian - Niagaran

Thornton, Illinois

Cnidaria - Anthozoa - Rugosa - Stauriida - Acervulariidae

Diplophyllum caespitosum
Previously Diphyphyllum caespitosum
Specimen P 459

Racine Formation?

Paleozoic - Silurian - Niagaran

Chicago, Illinois

Cnidaria - Anthozoa - Favositida - Favositidae

Favosites hisingeri
Specimen P 478

Racine Formation?

Paleozoic - Silurian - Niagaran

Hawthorne, Illinois

Cnidaria - Anthozoa - Favositida - Favositidae

Favosites niagarensis
Specimen P 5049

Racine Formation?

Paleozoic - Silurian - Niagaran

Chicago, Illinois

Cnidaria - Anthozoa - Heliolitida - Halysitidae

Halysites catenularius
Specimen P 8596

Racine Formation?

Paleozoic - Silurian - Niagaran

Bellwood, Illinois

Cnidaria - Anthozoa - Rugosa - Stauriida - Acervulariidae

Diplophyllum caespitosum
Previously Diphyphyllum caespitosum
Specimen P 21106

Racine Formation?

Paleozoic - Silurian - Niagaran

Chicago, Illinois

Mollusca - Cephalopoda - Orthocerida - Dawsonoceratidae

Dawsonoceras annulatum
Specimen P 754

Racine Formation

Paleozoic - Silurian - Niagaran

Chicgao, Illinois

Bryozoa - Stenolaemata - Fenestrata

Ptiloporella sp.
Specimen PE 412

Racine Formation - Port Byron formations

Paleozoic - Silurian - Niagaran

Thornton, Illinois

Cnidaria - Anthozoa - Favositida - Pachyporidae

Coenites reticulata
Previously Cladopora reticulata
Specimen UC 2783

Racine Formation?

Paleozoic - Silurian - Niagaran

Chicago, Illinois

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