Fossil Invertebrates Diversity
Image slideshow
Brachiopoda - Rhynchonellata - Terebratulida Magellania sp.Specimen P 28814 Patagonian beds Cenozoic - Paleogene - Eocene Santa Cruz, Argentina
Bryozoa - Stenolaemata - Cystoporata Ceramoporella ohioensisThis 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 storeyaSpecimen PE 11058 Upper Bighorn Formation - Rock Creek beds Paleozoic - Late Ordovician Johnson County, Wyoming
Annelida - Polychaeta - Phyllodocida Dryptoscolex matthiesaeSpecimen PE 12491 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian (~305 million years old) Mazon Creek Area, Illinois
Echiura -(spoon worms) Coprinoscolex ellogimusSpecimen 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 mackeeiSpecimen PE 21551 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian (~305 million years old) Mazon Creek Area, Illinois
Annelida - Polychaeta - Eunicida Esconites zelusSpecimen PE 22881 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian (~305 million years old) Mazon Creek Area, Illinois
Annelida - Polychaeta - Phyllodocida Rutellifrons wolfforumSpecimen PE 22898 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian (~305 million years old) Mazon Creek Area, Illinois
Sipunculoida - (peanut worms) Lecthaylus gregariusSpecimen PE 31533-2 Racine Formation - Lecthaylus Shale Paleozoic - Silurian - Niagaran(~420 million years ago) Chicago area, Illinois
Echiura -(spoon worms) Coprinoscolex ellogimusSpecimen 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 FormationPaleozoic - Middle Devonian Port Colborne, Ontario, Canada
Porifera - Hexactinellida - Reticulosa(glass sponge) Hydnoceras hypastrumSpecimen UC 13154 Chemung Group Paleozoic - Late Devonian Steuben County, New York
Porifera - Hexactinellida - Reticulosa(glass sponge) Hydnoceras AvocaSpecimen 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 floridaSpecimen UC 17494 Fairview Formation - Mt. Hope Member Paleozoic - Late Ordovician Covington, Kentucky
Bryozoa - Stenolaemata - Trepostomida Batostoma minnesotenseSpecimen UC 17503 Decorah Formation - Rhinidictya beds Paleozoic - Late Ordovician Minneapolis, Minnesota
Porifera - Hexactinellida - Reticulosa(glass sponges) Uphantaenia chemungensisSpecimen UC 18696 Chemung Group Paleozoic - Late Devonian Owego, New York
Cnidaria - Anthozoa - Rugosa Pachyphyllum woodmaniSpecimen 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 percarinatumSpecimen UC 38750 Paleozoic - Middle Devonian Emmet County, Michigan
Brachiopoda - Rhynchonellata - Rhynchonellida Hiscobeccus capaxPreviously (Lepidocyclus capax) (Atrypa capax)Specimen PE 16568 Tanner's Creek Formation Paleozoic - Late Ordovician Abington, Indiana
Brachiopoda - Rhynchonellata - Pentamerida Pentamerus oblongusSpecimen PE 53958-A Red Mountain Formation Paleozoic - Silurian Jefferson County, Alabama
Brachiopoda - Rhynchonellata - Spiriferida Imbrexia incertus Previously Spirifer incertusSpecimen UC 8620 Burlington Limestone Paleozoic - Mississippian Burlington, Iowa
Brachiopoda - Rhynchonellata - Orthida Dinorthis occidentalis Previously Plaesiomys occidentalisSpecimen 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 oblongusSpecimen 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 alternataSpecimen UC 29379 Paleozoic - Late Ordovician(~450 Million years ago) Minooka, Illinois
Arthropoda - Myriapoda - Arthropleuridea Arthropleura cristataSpecimen PE 5262 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian(~305 million years ago) Mazon Creek Area, Illinois
Arthropoda - Myriapoda - Diploda(millipedes) Hexecontasoma carinatumSpecimen 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 majorSpecimen PE 25432 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian(~305 million years ago) Mazon Creek Area, Illinois
Onychophora -(velvet worms) Helenodora inopinataSpecimen PE 29049 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian(~305 million years ago) Mazon Creek Area, Illinois
Arthropoda - Insecta - Blattodea(cockroaches) Adeloblatta columbianaSpecimen 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 columbianaSpecimen 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 gloriosusSpecimen PE 27874 Carbondale Formation - Francis Creek Shale Paleozoic - Middle Pennsylvanian(~305 million years ago) Mazon Creek area, Illinois
Arthropoda - Insecta - Protorthoptera Eucaenus mazonusSpecimen 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 bownockeriSpecimen UC 36158 (topotype) Silica Shale Paleozoic - Middle Devonian Silica, Ohio
Brachiopoda - Rhynchonellata - Orthida Onniella meekiSpecimen UC 16542 Tanner's Creek Formation Paleozoic - Upper Ordovician Brookfield, Indiana
Mollusca - Gastropoda -(snails) Platystomata turbinataSpecimen UC 11758 (cotype) Onondaga Limestone Paleozoic - Middle Devonian Onondaga County, New York
Mollusca - Gastropoda -(snails) Platystoma turbinataSpecimen UC 11757 Onondaga Limestone Paleozoic - Middle Devonian Onondaga County, New York
Arthropoda - Euthycarcinoidea - Euthycarcinoida Kottixerxes gloriosusSpecimen PE 27873 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian(~305 million years ago) Mazon Creek Area, Illinois
Arthropoda -Myriapoda - Chilopoda(centipedes) Mazoscolopendra richardsoniSpecimen 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 danaeSpecimen P 29181 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian(~305 Million years ago) Mazon Creek Area, Illinois
Media for Mazon Creek Fossil Invertebrates
Arthropoda - Myriapoda -Diplopoda Eileticus aequalisSpecimen PE 789 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian(~305 Million years ago) Mazon Creek Area, Illinois
Arthropoda - Crustacea -Malacostraca Kallidecthes richiardsoniSpecimen PE 9771 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian(~305 Million years ago) Mazon Creek Area, Illinois
Arthropoda - Crustacea - Malacostraca Mamayocaris jaskowskiiSpecimen 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 kingiiSpecimen PE 25610 Paleozoic - Middle Cambrian Wheeler Formation Millard County, Utah
Arthropoda - Trilobita - Ptychopariida Elrathia kingiiSpecimen PE 25610 Paleozoic - Middle Cambrian Wheeler Formation Millard County, Utah
Arthropoda - Trilobita - Phacopida Diacalymene claviculaSpecimen PE 25639 Hunton Group - Henryhouse Formation Paleozoic - Silurian Ada, Oklahoma
Arthropoda - Chelicerata - Eurypterida Adelophthalmus mazonensisSpecimen PE 32377 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian(~305 Million years ago) Mazon Creek Area, Illinois
Arthropoda - Chelicerata - Eurypterida Adelophthalmus mazonensisSpecimen 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 typusSpecimen PE 37976 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian(~305 Million years ago) Mazon Creek Area, Illinois
Arthropoda - Trilobita - Phacopida Calymene celebraSpecimen PE 39218 Racine Formation Paleozoic - Silurian Milwaukee, Wisconsin
Arthropoda - Trilobita - Phacopida Calymene celebraSpecimen PE 39218 Racine Formation Paleozoic - Silurian Milwaukee, Wisconsin
Arthropoda - Insecta - Palaeodictyoptera Eubleptus danielsiSpecimen PE 40223 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian(~305 Million years ago) Mazon Creek Area, Illinois
Arthropoda - Chelicerata - Arachnida Triangulotarbus terrehautensisSpecimen PE 40269 Lower Shelburn Foramtion - Sandy Shale Member Paleozoic - Middle Pennsylvanian(~305 Million years ago) Terre Haute, Indiana
Arthropoda - Trilobita - Phacopida Dalmanites limuloidesSpecimen PE 56128 Rochester Shale Paleozoic - Silurian - Wenlockian Lockport, New York
Arthropoda - Trilobita - Phacopida Greenops boothiSpecimen PE 56147 Ludlowville Formation - Ledyard Shale Member - Alden Pyrite Bed Paleozoic - Middle Devonian - Givetian Alden, New York
Arthropoda - Trilobita - Phacopida Greenops stelliferSpecimen 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 hymenopteridSpecimen 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 sulcataSpecimen UC 9235 Carbondale Formation - Francis Creek Shale Member Paleozoic - Middle Pennsylvanian(~305 million years ago) Mazon Creek, Illinois
Arthropoda - Chelicerata - Eurypterida Carcinosoma newliniPreviously Eusarcus newliniSpecimen UC 12900 Kokomo Dolomite Silurian(~418 million years ago) Kokomo, Indiana
Arthropoda - Chelicerata - Eurypterida Carcinosoma newliniPreviously Eusarcus newliniSpecimen UC 12901 Kokomo Dolomite Silurian(~418 million years ago) Kokomo, Indiana
Arthropoda - Chelicerata - Eurypterida Carcinosoma newliniPreviously Eusarcus newliniSpecimen UC 12900 (plesiotypes) Kokomo Dolomite Silurian(~418 million years ago) Kokomo, Indiana
Arthropoda - Dinocaridida - Radiodonta Anomalocaris sp.Previously Peytonia nathorstiOriginally 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 spinosaSpecimen 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 canadensisSpecimen PE 25586 Collingswood Formation Paleozoic - Ordovician Collingswood, Ontario, Canada
Arthropoda - Trilobita - Asaphida Ogygites canadensisSpecimen PE 25586 Collingswood Formation Paleozoic - Ordovician Collingswood, Ontario, Canada
Arthropoda - Trilobita - Asaphida Pseudogygites latimarginatusSpecimen PE 56130 Lower Whitby Formation Paleozoic - Late Ordovician Ontario, Canada
Echinodermata - Diploporita - Triamara tumidaSpecimen P 8424 Paleozoic - Silurian Romeo, Illinois
Echinodermata - Acroechinoidea - Spatangoida Linthia variabilisSpecimen P 10458 Ripley Group Mesozoic - Cretaceous Pontotoc, Mississippi
Arthropoda - Trilobita - Phacopida Phacops handwerkiSpecimen 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 praecursorSpecimen 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 formosusSpecimen PE 28991 Renault Formation Paleozoic - Mississippian Waterloo, Illinois
Echinodermata - Asteroidea - Ambuloasteroidea(starfish or sea stars) Compsaster formosusSpecimen PE 28996 Renault Formation Paleozoic - Mississippian Waterloo, Illinois
Arthropoda - Trilobita - Agnostida Peronopsis interstrictaSpecimen PE agnostid Wheeler Formation Paleozoic - Middle Cambrian Millard County, Utah
Arthropoda - Trilobita - Agnostida Peronopsis interstrictaSpecimen PE agnostid Wheeler Formation Paleozoic - Middle Cambrian Millard County, Utah
Echinodermata - Asteroidea - Petraster americanusSpecimen UC 2465 Cincinnatian Group Paleozoic - Late Ordovician Cincinnati, Ohio
Echinodermata - Diploporita - Triamara tumidaPreviously described as Holocystites adipatusas (holotype)Specimen UC 6020 Osgood Formation ?? Paleozoic - Silurian - Niagaran Jefferson County, Indiana
Echinodermata - Rhombifera - Caryocrinites indianensisSpecimen UC 6028 Paleozoic - Silurian - Niagaran Jefferson County, Indiana
Echinodermata - Blastoidea - Fissiculata Orophocrinus stelliformisSpecimen UC 6366 Burlington Formation Paleozoic - Mississippian Burlington, Iowa
Echinodermata - Edrioasteroidea - Isorophida Agelacrinites pulaskensisSpecimen UC 6419 Paleozoic - Late Ordovician Pulaski County, Kentucky
Echinodermata - Echinoidea - Palaechinoida Oligoporus sulcatusSpecimen 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 verneuiliSpecimen UC 9956 Onondaga Formation Paleozoic - Middle Devonian Jeffersonville, Indiana(Falls of the Ohio)
Echinodermata - Diploporita - Holocystites alternatusSpecimen UC 18061 Osgood Formation ?? Paleozoic - Silurian - Niagaran Jefferson County, Indiana
Echinodermata - Diploporita Gomphocystites bownockeriSpecimen UC 22943 Racine Formation ?? Paleozoic - Silurian - Niagaran Chicago, Illinois
Echinodermata - Blastoidea - Spiraculata Pentremites nodosusSpecimen UC 25150 Lower Okaw (Golconda Limestone) Paleozoic - Mississippian Marigold, Illinois
Echinodermata - Blastoidea - Spiraculata Pentremites godoniSpecimen UC 25351 Paint Creek Shale Paleozoic - Mississippian Horaville, Illinois
Echinodermata - Echinoidea - Archaeocidaridae Nortonechinus welleriSpecimen UC 34711 Lime Creek Formation Paleozoic - Late Devonian Rockford, Iowa
Echinodermata - Edrioasteroidea -Isorophida Carneyella pileaSpecimen UC 54070 Paleozoic - Late Ordovician Cincinnati, Ohio
Mollusca - Gastropoda - Platystoma ShumardiSpecimen P 20623 Jeffersonville Limestone ??? Paleozoic - Middle Devonian Falls of the Ohio, Indiana & Kentucky
Mollusca - Bivalvia - Arcoida Glycymerita camaronesiaSpecimen P 28796 Patagonian beds Cenozoic - Paleogene - Eocene Santa Cruz, Argentina
Mollusca - Gastropoda -Neogastropoda - Muricidae Purpura chicoanaSpecimen P 28798 Patagonian beds Cenozoic - Paleogene - Eocene Punta Casamayor, Santa Cruz, Argentina
Mollusca - Gastropoda -Neogastropoda - Muricidae Purpura chicoanaSpecimen P 28798 Patagonian beds Cenozoic - Paleogene - Eocene Punta Casamayor, Santa Cruz, Argentina
Mollusca - Gastropoda - Murchisoniina - Hormotomidae Hormotoma rotundivolvisSpecimen P 28842 Paleozoic - Late Ordovician - Richmondian Frobisher Bay, Baffin Island, Nunavut, Canada
Mollusca - Bivalvia - Pholadomyoida - Edmondiidae Edmondia aspinwallensisSpecimen PE 22318 Carbondale Formation, Francis Creek Shale Member Paleozoic - Middle Pennsylvanian(~305 million years ago) Mazon Creek Area, Illinois
Mollusca - Bivalvia - Arcoida - Cucullaeidae Cucullaea marshalliSpecimen 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 etiwanensisSpecimen 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 marshalliSpecimen PE 288096-C Jaliense Cenozoic - Paleogene - Eocene Santa Cruz, Argentina
Mollusca - Cephalopoda - Ceratitida - Ceratitidae Ceratites hersheyiSpecimen PE Mesozoic - Middle Triassic - C. trinodosus Zone Fossil Hill, West Humboldt Range, Nevada
Mollusca - Gastropoda - Euomphalina Poleumita? discoideaSpecimen UC 2879 (holotype) Guelph Formation Paleozoic - Silurian Thornton, Illinois
Mollusca - Gastropoda - Euomphalina - Platyceratidae Platyceras niagarensisSpecimen 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 gorbyiSpecimen UC 6474 Chouteau Limestone Paleozoic - Mississippian Pettis County, Missouri
Mollusca - Cephalopoda - Goniatitida - Prodromitidae Prodromites gorbyiSpecimen UC 6474 Chouteau Limestone Paleozoic - Mississippian Pettis County, Missouri
Mollusca - Gastropoda - Cyrtoneritimorpha - Orthonychiidae Igoceras fissurellaSpecimen UC 6929 Keokuk Group Paleozoic - Mississippian Warsaw, Illinois
Mollusca - Gastropoda - Neritopsina - Naticopsidae Naticopsis giganteusSpecimen UC 10526 Paleozoic - Pennsylvanian Alton, Illinois
Mollusca - Gastropoda - Euomphalina - Platyceratidae Platyceras erectumSpecimen UC 11761 Hamilton Group Paleozoic - Middle Devonian Geneseo, New York
Mollusca - Gastropoda - Euomphalina - Euomphalidae Straparollus magnusSpecimen UC 18104 (holotype) Guelph Formation Paleozoic - Silurian Hawthorne, Illinois
Mollusca - Gastropoda - Murchisoniina - Lophospiridae Worthenia tabulataSpecimen UC 23068 Gunsight Shale(Gunsight Limestone of the Cisco Group??) Paleozoic - Late Pennsylvanian Gunsight, Texas
Mollusca - Gastropoda - Euomphalina - Platyceratidae Strophostylus allaniSpecimen 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 cancellatumSpecimen UC 18124 Port Byron Formation Paleozoic - Silurian - Niagaran Bridgeport, Illinois
Mollusca - Bivalvia - Amphicoelia neglectaSpecimen UC 21873 Racine Formation? Paleozoic - Silurian - Niagaran Bridgeport, Illinois
Mollusca - Bivalvia - Amphicoelia neglectaSpecimen UC 21873 Racine Formation? Paleozoic - Silurian - Niagaran Bridgeport, Illinois
Cnidaria - Anthozoa - Favositida - Favositidae Favosites hisingeriSpecimen P 478 Racine Formation? Paleozoic - Silurian - Niagaran Hawthorne, Illinois
Brachiopoda - Strophomenata - Orthotetida - Chilidiopsidae Coolinia subplanaPreviously named: Orthothetes subplanusSpecimen P 5097 Racine Formation? Paleozoic - Silurian - Niagaran Chicago, Illinois
Brachiopoda - Rhynchonellata - Pentamerida - Pentameridae Kirkidium knightiPreviously identified as Conchidium sp.Specimen P 16393 Racine Formation? Paleozoic - Silurian - Niagaran Thornton, Illinois
Cnidaria - Anthozoa - Rugosa - Stauriida - Acervulariidae Diplophyllum caespitosum Previously Diphyphyllum caespitosumSpecimen P 459 Racine Formation? Paleozoic - Silurian - Niagaran Chicago, Illinois
Cnidaria - Anthozoa - Favositida - Favositidae Favosites hisingeriSpecimen P 478 Racine Formation? Paleozoic - Silurian - Niagaran Hawthorne, Illinois
Cnidaria - Anthozoa - Favositida - Favositidae Favosites niagarensisSpecimen P 5049 Racine Formation? Paleozoic - Silurian - Niagaran Chicago, Illinois
Cnidaria - Anthozoa - Heliolitida - Halysitidae Halysites catenulariusSpecimen P 8596 Racine Formation? Paleozoic - Silurian - Niagaran Bellwood, Illinois
Cnidaria - Anthozoa - Rugosa - Stauriida - Acervulariidae Diplophyllum caespitosum Previously Diphyphyllum caespitosumSpecimen P 21106 Racine Formation? Paleozoic - Silurian - Niagaran Chicago, Illinois
Mollusca - Cephalopoda - Orthocerida - Dawsonoceratidae Dawsonoceras annulatumSpecimen 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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