Milwaukee County, Wisconsin, USAi

Regional Level Types
Milwaukee County	County
Wisconsin	State
USA	Country

Milwaukee County is underlain by Silurian and Devonian sedimentary rocks, primarily dolostones. Quarries can yield some well-crystallized specimens, such as calcite, celestine and marcasite. Superb millerite was found in the past in Devonian Milwaukee Formation in Estabrook Park, where bedrock was previously quarried for cement. The few exposures of the sedimentary rocks can also yield interesting fossils from reefs and associated environments. Thick glacial sediments, including lake sediments, obscure the bedrock in most places. Beach combing along Lake Michigan's shore can provide interesting samples of local and glacially transported rocks. Milwaukee features some excellent geology displays - the Milwaukee Public Museum downtown and the geology department displays on the U. W. Milwaukee campus.

Fossils

There are 9 fossil localities from the PaleoBioDB database within this region.

BETA TEST - These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences	803
Youngest Fossil Listed	383 Ma (Middle Devonian)
Oldest Fossil Listed	443 Ma (Silurian)
Stratigraphic Units	Click here to view 7 stratigraphic units.
Stratigraphic Units	Unit No. Occurrences Age Milwaukee 24 387.7 - 372.2 Ma (Devonian) Milwaukee - Berthelet 4 387.7 - 382.7 Ma (Devonian) Milwaukee - Lindwurm 8 387.7 - 382.7 Ma (Devonian) Racine 559 427.4 - 423 Ma (Silurian) Salina - Racine 53 430.5 - 427.4 Ma (Silurian) Racine Dolomite 57 433.4 - 423 Ma (Silurian) Brandon Bridge 23 438.5 - 433.4 Ma (Silurian)
Fossils from Region	Click here to show the list.
Accepted Name Hierarchy Age Glomospirella genus Chromista : Foraminifera : Tubothalamea : Spirillinida : Ammodiscidae : Glomospirella 438.5 - 433.4 Ma Silurian Lagenammina genus Chromista : Foraminifera : Monothalamea : Astrorhizida : Saccamminidae : Lagenammina 438.5 - 433.4 Ma Silurian Thurammina genus Chromista : Foraminifera : Monothalamea : Astrorhizida : Saccamminidae : Thurammina 438.5 - 433.4 Ma Silurian Lithistida subclass Animalia : Porifera : Demospongea : Lithistida 433.4 - 427.4 Ma Silurian Heteractinida class Animalia : Porifera : Heteractinida 433.4 - 427.4 Ma Silurian Hexactinellida class Animalia : Porifera : Hexactinellida 433.4 - 427.4 Ma Silurian Catenipora genus Animalia : Cnidaria : Anthozoa : Halysitidae : Catenipora 433.4 - 427.4 Ma Silurian Halysites genus Animalia : Cnidaria : Anthozoa : Favositidae : Halysites 433.4 - 427.4 Ma Silurian Pleurodictyum genus Animalia : Cnidaria : Anthozoa : Micheliniidae : Pleurodictyum 443.4 - 427.4 Ma Silurian Rugosa subclass Animalia : Cnidaria : Anthozoa : Rugosa 443.4 - 423 Ma Silurian Amplexus genus Animalia : Cnidaria : Anthozoa : Amplexidae : Amplexus 433.4 - 427.4 Ma Silurian Cyathaxonia genus Animalia : Cnidaria : Anthozoa : Cyathaxoniidae : Cyathaxonia 433.4 - 427.4 Ma Silurian Zaphrenthis genus Animalia : Cnidaria : Anthozoa : Zaphrentidae : Zaphrenthis 433.4 - 427.4 Ma Silurian Serpulimorpha order Animalia : Annelida : Polychaeta : Serpulimorpha 433.4 - 427.4 Ma Silurian Lecathylus genus Animalia : Sipuncula : Lecathylus 433.4 - 423 Ma Silurian Machaeridia unranked clade Animalia : Annelida : Polychaeta : Phyllodocida : Machaeridia 433.4 - 427.4 Ma Silurian Cornulites genus Animalia : Mollusca : Cornulitidae : Cornulites 443.4 - 427.4 Ma Silurian Gastropoda class Animalia : Mollusca : Gastropoda 443.4 - 423 Ma Silurian Platyceras genus Animalia : Mollusca : Gastropoda : Platyceratidae : Platyceras 443.4 - 427.4 Ma Silurian Cycloceras genus Animalia : Mollusca : Cephalopoda : Nautilida : Nautilidae : Cycloceras 443.4 - 427.4 Ma Silurian Dawsonoceras genus Animalia : Mollusca : Cephalopoda : Nautilida : Nautilidae : Dawsonoceras 443.4 - 427.4 Ma Silurian Geisonocerina genus Animalia : Mollusca : Cephalopoda : Geisonoceratidae : Geisonocerina 443.4 - 427.4 Ma Silurian Kionoceras genus Animalia : Mollusca : Cephalopoda : Orthoceratidae : Kionoceras 443.4 - 427.4 Ma Silurian Metaspyroceras genus Animalia : Mollusca : Cephalopoda : Dawsonoceratidae : Metaspyroceras 443.4 - 427.4 Ma Silurian Michelinoceras genus Animalia : Mollusca : Cephalopoda : Orthoceratidae : Michelinoceras 443.4 - 427.4 Ma Silurian Ophioceras genus Fungi : Ascomycota : Sordariomycetes : Magnaporthales : Ophioceraceae : Ophioceras 443.4 - 427.4 Ma Silurian Protokionoceras genus Animalia : Mollusca : Cephalopoda : Geisonoceratidae : Protokionoceras 443.4 - 427.4 Ma Silurian Sactorthoceras genus Animalia : Mollusca : Cephalopoda : Sactorthoceratidae : Sactorthoceras 443.4 - 427.4 Ma Silurian Sphooceras genus Animalia : Mollusca : Cephalopoda : Sphooceratidae : Sphooceras 443.4 - 427.4 Ma Silurian Ascoceras genus Animalia : Mollusca : Cephalopoda : Ascoceratidae : Ascoceras 443.4 - 427.4 Ma Silurian Phragmoceras genus Animalia : Mollusca : Cephalopoda : Phragmoceratidae : Phragmoceras 443.4 - 427.4 Ma Silurian Amphicyrtoceras genus Animalia : Mollusca : Cephalopoda : Acleistoceratidae : Amphicyrtoceras 443.4 - 427.4 Ma Silurian Crateroceras genus Animalia : Mollusca : Cephalopoda : Acleistoceratidae : Crateroceras 443.4 - 427.4 Ma Silurian Cyrtorizoceras genus Animalia : Mollusca : Cephalopoda : Oncoceratidae : Cyrtorizoceras 443.4 - 427.4 Ma Silurian Hexameroceras genus Animalia : Mollusca : Cephalopoda : Hemiphragmoceratidae : Hexameroceras 443.4 - 427.4 Ma Silurian Inversoceras genus Animalia : Mollusca : Cephalopoda : Trimeroceratidae : Inversoceras 443.4 - 427.4 Ma Silurian Metarizoceras genus Animalia : Mollusca : Cephalopoda : Oncoceratidae : Metarizoceras 443.4 - 427.4 Ma Silurian Lechritrochoceras genus Animalia : Mollusca : Cephalopoda : Nautilida : Nautilidae : Lechritrochoceras 443.4 - 427.4 Ma Silurian Bivalvia class Animalia : Mollusca : Bivalvia 443.4 - 427.4 Ma Silurian Matheria genus Animalia : Mollusca : Bivalvia : Cyrtodontidae : Matheria 443.4 - 427.4 Ma Silurian Actinopteria genus Animalia : Mollusca : Bivalvia : Ostreida : Pterineidae : Actinopteria 443.4 - 427.4 Ma Silurian Palaeocardia genus Animalia : Mollusca : Bivalvia : Palaeocardia 443.4 - 427.4 Ma Silurian Rhombopteria genus Animalia : Mollusca : Bivalvia : Leiopectinidae : Rhombopteria 443.4 - 427.4 Ma Silurian Modiomorphida order Animalia : Mollusca : Bivalvia : Modiomorphida 443.4 - 427.4 Ma Silurian Goniophora genus Animalia : Mollusca : Bivalvia : Modiomorphida : Modiomorphidae : Goniophora 443.4 - 427.4 Ma Silurian Cypricardinia genus Animalia : Mollusca : Bivalvia : Carditida : Cardiniidae : Cypricardinia 443.4 - 427.4 Ma Silurian Trilobita class Animalia : Arthropoda : Trilobita 433.4 - 427.4 Ma Silurian Bumastus genus Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae : Bumastus 443.4 - 423 Ma Silurian Illaenoides genus Animalia : Arthropoda : Trilobita : Corynexochida : Styginidae : Illaenoides 433.4 - 423 Ma Silurian Stenopareia genus Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae : Stenopareia 438.5 - 433.4 Ma Silurian Arctinurus genus Animalia : Arthropoda : Trilobita : Lichida : Lichidae : Arctinurus 443.4 - 423 Ma Silurian Dicranopeltis genus Animalia : Arthropoda : Trilobita : Lichida : Lichidae : Dicranopeltis 443.4 - 423 Ma Silurian Trochurus genus Animalia : Arthropoda : Trilobita : Lichida : Lichidae : Trochurus 433.4 - 423 Ma Silurian Acidaspis genus Animalia : Arthropoda : Trilobita : Lichida : Odontopleuridae : Acidaspis 433.4 - 423 Ma Silurian Dudleyaspis genus Animalia : Arthropoda : Trilobita : Lichida : Selenopeltidae : Dudleyaspis 433.4 - 423 Ma Silurian Leonaspis genus Animalia : Arthropoda : Trilobita : Lichida : Odontopleuridae : Leonaspis 433.4 - 423 Ma Silurian Kosovopeltis genus Animalia : Arthropoda : Trilobita : Corynexochida : Styginidae : Kosovopeltis 443.4 - 427.4 Ma Silurian Proetida order Animalia : Arthropoda : Trilobita : Proetida 443.4 - 427.4 Ma Silurian Harpidella genus Animalia : Arthropoda : Trilobita : Proetida : Aulacopleuridae : Harpidella 433.4 - 423 Ma Silurian Otarion genus Animalia : Arthropoda : Trilobita : Proetida : Aulacopleuridae : Otarion 443.4 - 427.4 Ma Silurian Proetus genus Animalia : Arthropoda : Trilobita : Proetida : Proetidae : Proetus 433.4 - 423 Ma Silurian Scharyia genus Animalia : Arthropoda : Trilobita : Proetida : Brachymetopidae : Scharyia 433.4 - 423 Ma Silurian Acernaspis genus Animalia : Arthropoda : Trilobita : Phacopida : Phacopidae : Acernaspis 438.5 - 433.4 Ma Silurian Calymene genus Animalia : Arthropoda : Trilobita : Phacopida : Calymenidae : Calymene 433.4 - 423 Ma Silurian Dalmanites genus Animalia : Arthropoda : Trilobita : Phacopida : Dalmanitidae : Dalmanites 443.4 - 423 Ma Silurian Deiphon genus Animalia : Arthropoda : Trilobita : Phacopida : Cheiruridae : Deiphon 443.4 - 423 Ma Silurian Distyrax genus Animalia : Arthropoda : Trilobita : Phacopida : Encrinuridae : Distyrax 438.5 - 433.4 Ma Silurian Encrinurus genus Animalia : Arthropoda : Trilobita : Phacopida : Encrinuridae : Encrinurus 443.4 - 423 Ma Silurian Eophacops genus Animalia : Arthropoda : Trilobita : Phacopida : Pterygometopidae : Eophacops 443.4 - 423 Ma Silurian Hadromeros genus Animalia : Arthropoda : Trilobita : Phacopida : Cheiruridae : Hadromeros 433.4 - 423 Ma Silurian Sphaerexochus genus Animalia : Arthropoda : Trilobita : Phacopida : Cheiruridae : Sphaerexochus 433.4 - 423 Ma Silurian Staurocephalus genus Animalia : Arthropoda : Trilobita : Phacopida : Encrinuridae : Staurocephalus 433.4 - 423 Ma Silurian Ostracoda class Animalia : Arthropoda : Ostracoda 438.5 - 433.4 Ma Silurian Bryozoa phylum Animalia : Bryozoa 443.4 - 423 Ma Silurian Fenestrata order Animalia : Bryozoa : Stenolaemata : Fenestrata 438.5 - 433.4 Ma Silurian Lingula genus Animalia : Brachiopoda : Lingulata : Lingulida : Lingulidae : Lingula 387.7 - 382.7 Ma Devonian Orbiculoidea genus Animalia : Brachiopoda : Lingulata : Lingulida : Discinidae : Orbiculoidea 443.4 - 382.7 Ma Paleozoic Philhedra genus Animalia : Brachiopoda : Craniata : Craniida : Craniidae : Philhedra 443.4 - 427.4 Ma Silurian Dinobolus genus Animalia : Brachiopoda : Craniata : Trimerellidae : Dinobolus 443.4 - 427.4 Ma Silurian Dalejina genus Animalia : Brachiopoda : Rhynchonellata : Orthida : Rhipidomellidae : Dalejina 443.4 - 423 Ma Silurian Dicoelosia genus Animalia : Brachiopoda : Rhynchonellata : Orthida : Dicoelosiidae : Dicoelosia 433.4 - 423 Ma Silurian Dolerorthis genus Animalia : Brachiopoda : Rhynchonellata : Orthida : Hesperorthidae : Dolerorthis 443.4 - 427.4 Ma Silurian Isorthis genus Animalia : Brachiopoda : Rhynchonellata : Orthida : Dalmanellidae : Isorthis 443.4 - 423 Ma Silurian Oxoplecia genus Animalia : Brachiopoda : Strophomenata : Orthotetida : Triplesiidae : Oxoplecia 443.4 - 427.4 Ma Silurian Platystrophia genus Animalia : Brachiopoda : Rhynchonellata : Orthida : Platystrophiidae : Platystrophia 443.4 - 427.4 Ma Silurian Ptychopleurella genus Animalia : Brachiopoda : Rhynchonellata : Orthida : Hesperorthidae : Ptychopleurella 443.4 - 427.4 Ma Silurian Resserella genus Animalia : Brachiopoda : Rhynchonellata : Orthida : Dalmanellidae : Resserella 438.5 - 423 Ma Silurian Schizonema genus Animalia : Brachiopoda : Rhynchonellata : Orthida : Hesperorthidae : Schizonema 443.4 - 427.4 Ma Silurian Skenidioides genus Animalia : Brachiopoda : Rhynchonellata : Protorthida : Skenidiidae : Skenidioides 443.4 - 423 Ma Silurian Chonetes genus Animalia : Brachiopoda : Strophomenata : Productida : Chonetidae : Chonetes 387.7 - 382.7 Ma Devonian Fardenia (Coolinia) subgenus Animalia : Brachiopoda : Strophomenata : Orthotetida : Chilidiopsidae : Fardenia : Fardenia (Coolinia) 443.4 - 427.4 Ma Silurian Eoplectodonta genus Animalia : Brachiopoda : Strophomenata : Strophomenida : Sowerbyellidae : Eoplectodonta 438.5 - 423 Ma Silurian Jonesea genus Animalia : Brachiopoda : Strophomenata : Strophomenida : Sowerbyellidae : Jonesea 438.5 - 433.4 Ma Silurian Leangella genus Animalia : Brachiopoda : Strophomenata : Strophomenida : Leptestiidae : Leangella 443.4 - 423 Ma Silurian Leptaena genus Animalia : Brachiopoda : Strophomenata : Strophomenida : Rafinesquinidae : Leptaena 433.4 - 423 Ma Silurian Pentlandina genus Animalia : Brachiopoda : Strophomenata : Strophomenida : Strophomenidae : Pentlandina 443.4 - 427.4 Ma Silurian Pholidostrophia genus Animalia : Brachiopoda : Strophomenata : Strophomenida : Strophodontidae : Pholidostrophia 387.7 - 382.7 Ma Devonian Plectodonta genus Animalia : Brachiopoda : Strophomenata : Strophomenida : Sowerbyellidae : Plectodonta 443.4 - 427.4 Ma Silurian Protomegastrophia genus Animalia : Brachiopoda : Strophomenata : Strophomenida : Leptostrophiidae : Protomegastrophia 433.4 - 423 Ma Silurian Anastrophia genus Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Parastrophinidae : Anastrophia 443.4 - 423 Ma Silurian Antirhynchonella genus Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Clorindidae : Antirhynchonella 443.4 - 423 Ma Silurian Camerella genus Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Camerellidae : Camerella 433.4 - 423 Ma Silurian Capelliniella genus Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Pentameridae : Capelliniella 443.4 - 427.4 Ma Silurian Conchidium genus Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Subrianidae : Conchidium 443.4 - 427.4 Ma Silurian Harpidium (Isovella) subgenus Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Pentameridae : Harpidium : Harpidium (Isovella) 443.4 - 423 Ma Silurian Pentamerella genus Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Clorindidae : Pentamerella 387.7 - 382.7 Ma Devonian Rhynchonellida order Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida 433.4 - 423 Ma Silurian Rhynchotreta genus Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Trigonirhynchiidae : Rhynchotreta 443.4 - 423 Ma Silurian Sphaerirhynchia genus Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Hebetoechiidae : Sphaerirhynchia 443.4 - 427.4 Ma Silurian Stegerhynchus genus Animalia : Brachiopoda : Rhynchonellata : Rhynchonellida : Rhynchotrematidae : Stegerhynchus 443.4 - 427.4 Ma Silurian Athyris genus Animalia : Brachiopoda : Rhynchonellata : Athyridida : Athyrididae : Athyris 387.7 - 382.7 Ma Devonian Cyrtia genus Animalia : Brachiopoda : Rhynchonellata : Spiriferinida : Syringothyrididae : Cyrtia 443.4 - 423 Ma Silurian Cyrtina genus Animalia : Brachiopoda : Rhynchonellata : Spiriferinida : Cyrtinidae : Cyrtina 387.7 - 382.7 Ma Devonian Elita genus Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Elythidae : Elita 387.7 - 382.7 Ma Devonian Eospirifer genus Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Cyrtiidae : Eospirifer 433.4 - 423 Ma Silurian Eosyringothyris genus Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Spinocyrtiidae : Eosyringothyris 387.7 - 382.7 Ma Devonian Hedeina genus Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Cyrtiidae : Hedeina 433.4 - 423 Ma Silurian Howellella genus Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Delthyrididae : Howellella 443.4 - 427.4 Ma Silurian Macropleura genus Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Cyrtiidae : Macropleura 443.4 - 427.4 Ma Silurian Meristina genus Animalia : Brachiopoda : Rhynchonellata : Athyridida : Meristellidae : Meristina 443.4 - 423 Ma Silurian Nucleospira genus Animalia : Brachiopoda : Rhynchonellata : Athyridida : Nucleospiridae : Nucleospira 443.4 - 427.4 Ma Silurian Orthospirifer genus Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Spinocyrtiidae : Orthospirifer 387.7 - 382.7 Ma Devonian Spinocyrtia genus Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Spinocyrtiidae : Spinocyrtia 387.7 - 382.7 Ma Devonian Striispirifer genus Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Cyrtiidae : Striispirifer 443.4 - 423 Ma Silurian Tylothyris genus Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Mucrospiriferidae : Tylothyris 387.7 - 382.7 Ma Devonian Whitfieldella genus Animalia : Brachiopoda : Rhynchonellata : Athyridida : Meristellidae : Whitfieldella 443.4 - 427.4 Ma Silurian Atrypida order Animalia : Brachiopoda : Rhynchonellata : Atrypida 438.5 - 433.4 Ma Silurian Atrypa genus Animalia : Brachiopoda : Rhynchonellata : Atrypida : Atrypidae : Atrypa 443.4 - 382.7 Ma Paleozoic Atrypina genus Animalia : Brachiopoda : Rhynchonellata : Atrypida : Atrypinidae : Atrypina 443.4 - 427.4 Ma Silurian Plectatrypa genus Animalia : Brachiopoda : Rhynchonellata : Atrypida : Atrypidae : Plectatrypa 443.4 - 423 Ma Silurian Reticulatrypa genus Animalia : Brachiopoda : Rhynchonellata : Atrypida : Punctatrypidae : Reticulatrypa 443.4 - 427.4 Ma Silurian Desquamatia (Seratrypa) subgenus Animalia : Brachiopoda : Rhynchonellata : Atrypida : Atrypidae : Desquamatia : Desquamatia (Seratrypa) 387.7 - 382.7 Ma Devonian Cranaena genus Animalia : Brachiopoda : Rhynchonellata : Terebratulida : Cranaenidae : Cranaena 387.7 - 382.7 Ma Devonian Blastoidea subclass Animalia : Echinodermata : Blastoidea 433.4 - 423 Ma Silurian Caryocrinites genus Animalia : Echinodermata : Rhombifera : Caryocrinitidae : Caryocrinites 443.4 - 423 Ma Silurian Gomphocystites genus Animalia : Echinodermata : Diploporita : Gomphocystitidae : Gomphocystites 433.4 - 423 Ma Silurian Lysocystites genus Animalia : Echinodermata : Eocrinoidea : Lysocystites 443.4 - 427.4 Ma Silurian Mitrata order Animalia : Echinodermata : Stylophora : Mitrata 433.4 - 423 Ma Silurian Crinoidea class Animalia : Echinodermata : Crinoidea 443.4 - 423 Ma Silurian Dimerocrinites genus Animalia : Echinodermata : Crinoidea : Dimerocrinitidae : Dimerocrinites 433.4 - 423 Ma Silurian Lampterocrinus genus Animalia : Echinodermata : Crinoidea : Lampterocrinidae : Lampterocrinus 443.4 - 423 Ma Silurian Lyriocrinus genus Animalia : Echinodermata : Crinoidea : Rhodocrinitidae : Lyriocrinus 443.4 - 427.4 Ma Silurian Siphonocrinus genus Animalia : Echinodermata : Crinoidea : Lampterocrinidae : Siphonocrinus 443.4 - 423 Ma Silurian Calliocrinus genus Animalia : Echinodermata : Crinoidea : Eucalyptocrinitidae : Calliocrinus 443.4 - 427.4 Ma Silurian Eucalyptocrinites genus Animalia : Echinodermata : Crinoidea : Eucalyptocrinitidae : Eucalyptocrinites 443.4 - 423 Ma Silurian Marsupiocrinus genus Animalia : Echinodermata : Crinoidea : Marsupiocrinidae : Marsupiocrinus 443.4 - 423 Ma Silurian Periechocrinus genus Animalia : Echinodermata : Crinoidea : Periechocrinidae : Periechocrinus 443.4 - 427.4 Ma Silurian Promelocrinus genus Animalia : Echinodermata : Crinoidea : Promelocrinus 443.4 - 427.4 Ma Silurian Myelodactylus genus Animalia : Echinodermata : Crinoidea : Myelodactylidae : Myelodactylus 433.4 - 423 Ma Silurian Parapisocrinus genus Animalia : Echinodermata : Crinoidea : Pisocrinidae : Parapisocrinus 443.4 - 423 Ma Silurian Pisocrinus genus Animalia : Echinodermata : Crinoidea : Pisocrinidae : Pisocrinus 433.4 - 423 Ma Silurian Zophocrinus genus Animalia : Echinodermata : Crinoidea : Zophocrinus 433.4 - 423 Ma Silurian Crotalocrinites genus Animalia : Echinodermata : Crinoidea : Crotalocrinitidae : Crotalocrinites 443.4 - 423 Ma Silurian Gissocrinus genus Animalia : Echinodermata : Crinoidea : Cyathocrinitidae : Gissocrinus 433.4 - 423 Ma Silurian Thalamocrinus genus Animalia : Echinodermata : Crinoidea : Thalamocrinus 433.4 - 423 Ma Silurian Lecanocrinus genus Animalia : Echinodermata : Crinoidea : Lecanocrinidae : Lecanocrinus 443.4 - 423 Ma Silurian Mysticocrinus genus Animalia : Echinodermata : Crinoidea : Mysticocrinus 433.4 - 423 Ma Silurian Pycnosaccus genus Animalia : Echinodermata : Crinoidea : Pycnosaccus 433.4 - 423 Ma Silurian Dendroidea order Animalia : Hemichordata : Graptolithina : Dendroidea 433.4 - 423 Ma Silurian Conodonta class Animalia : Chordata : Conodonta 438.5 - 433.4 Ma Silurian Ozarkodina genus Animalia : Chordata : Prioniodontidae : Ozarkodina 430.5 - 427.4 Ma Silurian Platyceratidae family Animalia : Mollusca : Gastropoda : Platyceratidae 438.5 - 433.4 Ma Silurian Eotomarioidea superfamily Animalia : Mollusca : Gastropoda : Murchisoniina : Eotomarioidea 443.4 - 427.4 Ma Silurian Bellerophontoidea superfamily Animalia : Mollusca : Gastropoda : Bellerophontida : Bellerophontoidea 443.4 - 427.4 Ma Silurian Amphicoelia leidyi species Animalia : Mollusca : Bivalvia : Myalinida : Ambonychiidae : Amphicoelia : Amphicoelia leidyi 443.4 - 427.4 Ma Silurian Mytilarca acutirostra species Animalia : Mollusca : Bivalvia : Myalinida : Ambonychiidae : Mytilarca : Mytilarca acutirostra 443.4 - 427.4 Ma Silurian Eunema fatua species Eunema fatua 443.4 - 427.4 Ma Silurian Prosolarium halei species Animalia : Mollusca : Gastropoda : Murchisoniina : Luciellidae : Prosolarium : Prosolarium halei 443.4 - 423 Ma Silurian Loxoplocus gothlandicus species Animalia : Mollusca : Gastropoda : Lophospiridae : Loxoplocus : Loxoplocus gothlandicus 433.4 - 423 Ma Silurian Conocardiidae family Animalia : Mollusca : Conocardiidae 433.4 - 423 Ma Silurian Oriostoma pauper species Animalia : Mollusca : Gastropoda : Euomphalina : Oriostomatidae : Oriostoma : Oriostoma pauper 443.4 - 427.4 Ma Silurian Loxonema leda species Animalia : Mollusca : Gastropoda : Loxonematidae : Loxonema : Loxonema leda 443.4 - 427.4 Ma Silurian Hexacorallia subclass Animalia : Cnidaria : Anthozoa : Hexacorallia 438.5 - 433.4 Ma Silurian Nautiloidea subclass Animalia : Mollusca : Cephalopoda : Nautiloidea 433.4 - 423 Ma Silurian Euomphalopterus alatus species Animalia : Mollusca : Gastropoda : Euomphalina : Euomphalidae : Euomphalopterus : Euomphalopterus alatus 433.4 - 423 Ma Silurian Foraminifera phylum Chromista : Foraminifera 433.4 - 427.4 Ma Silurian Platyceras niagarensis species Animalia : Mollusca : Gastropoda : Euomphalina : Platyceratidae : Platyceras : Platyceras niagarensis 433.4 - 423 Ma Silurian Tremanotus angustata species Animalia : Mollusca : Gastropoda : Bellerophontida : Bucaniidae : Tremanotus : Tremanotus angustata 443.4 - 423 Ma Silurian Strophostylus elevatus species Animalia : Mollusca : Gastropoda : Euomphalina : Platyceratidae : Strophostylus : Strophostylus elevatus 443.4 - 427.4 Ma Silurian Fusispira ventricosa species Animalia : Mollusca : Gastropoda : Subulitidae : Fusispira : Fusispira ventricosa 443.4 - 427.4 Ma Silurian Holopea guelphensis species Animalia : Mollusca : Gastropoda : Holopeidae : Holopea : Holopea guelphensis 443.4 - 427.4 Ma Silurian Ptychocaulus bivittata species Animalia : Mollusca : Gastropoda : Murchisoniina : Hormotomidae : Ptychocaulus : Ptychocaulus bivittata 433.4 - 423 Ma Silurian Murchisonia conradi species Animalia : Mollusca : Gastropoda : Pleurotomariida : Murchisoniidae : Murchisonia : Murchisonia conradi 443.4 - 427.4 Ma Silurian Murchisonia laphami species Animalia : Mollusca : Gastropoda : Pleurotomariida : Murchisoniidae : Murchisonia : Murchisonia laphami 443.4 - 427.4 Ma Silurian Platyostoma niagarensis species Animalia : Mollusca : Gastropoda : Platyceratidae : Platyostoma : Platyostoma niagarensis 433.4 - 423 Ma Silurian Conotoma bispiralis species Animalia : Mollusca : Gastropoda : Murchisoniina : Gosseletinidae : Conotoma : Conotoma bispiralis 433.4 - 423 Ma Silurian Isfarispira perlata species Animalia : Mollusca : Gastropoda : Euomphalina : Anomphalidae : Isfarispira : Isfarispira perlata 433.4 - 423 Ma Silurian Pycnomphalus solarioides species Animalia : Mollusca : Gastropoda : Euomphalina : Anomphalidae : Pycnomphalus : Pycnomphalus solarioides 433.4 - 423 Ma Silurian Philoxene mopsus species Animalia : Mollusca : Gastropoda : Euomphalina : Euomphalidae : Straparollus : Philoxene mopsus 443.4 - 423 Ma Silurian Philoxene paveyi species Animalia : Mollusca : Gastropoda : Euomphalina : Euomphalidae : Straparollus : Philoxene paveyi 433.4 - 423 Ma Silurian Cyrtospira ventricosus species Animalia : Mollusca : Gastropoda : Murchisoniina : Subulitidae : Cyrtospira : Cyrtospira ventricosus 433.4 - 423 Ma Silurian Oriostoma globosum species Animalia : Mollusca : Gastropoda : Euomphalina : Oriostomatidae : Oriostoma : Oriostoma globosum 433.4 - 423 Ma Silurian Ruedemannia robusta species Animalia : Mollusca : Gastropoda : Lophospiridae : Ruedemannia : Ruedemannia robusta 433.4 - 423 Ma Silurian Auloporidae family Animalia : Cnidaria : Anthozoa : Auloporidae 433.4 - 423 Ma Silurian Tabulata subclass Animalia : Cnidaria : Anthozoa : Tabulata 433.4 - 423 Ma Silurian Chondrites genus Chondrites 433.4 - 427.4 Ma Silurian Palaeophycus genus Palaeophycus 433.4 - 427.4 Ma Silurian Planolites genus Animalia : Planolites 433.4 - 427.4 Ma Silurian Thalassinoides genus Thalassinoides 433.4 - 427.4 Ma Silurian Cheiruridae family Animalia : Arthropoda : Trilobita : Phacopida : Cheiruridae 433.4 - 423 Ma Silurian Favositidae family Animalia : Cnidaria : Anthozoa : Favositidae 438.5 - 433.4 Ma Silurian Encrinuridae family Animalia : Arthropoda : Trilobita : Phacopida : Encrinuridae 433.4 - 423 Ma Silurian Elrodoceras genus Animalia : Mollusca : Cephalopoda : Armenoceratidae : Elrodoceras 443.4 - 427.4 Ma Silurian Mackenziurus lauriae species Animalia : Arthropoda : Trilobita : Phacopida : Encrinuridae : Mackenziurus : Mackenziurus lauriae 443.4 - 427.4 Ma Silurian Ischadites genus Plantae : Chlorophyta : Ischadites 433.4 - 427.4 Ma Silurian Fenestellidae family Animalia : Bryozoa : Stenolaemata : Fenestrida : Fenestellidae 433.4 - 423 Ma Silurian Strophomena (Strophodonta) subgenus Animalia : Brachiopoda : Strophomenata : Strophomenida : Strophodontidae : Strophomena (Strophodonta) 387.7 - 382.7 Ma Devonian Zaphrentidae family Animalia : Cnidaria : Anthozoa : Zaphrentidae 433.4 - 423 Ma Silurian Astraeospongium genus Animalia : Porifera : Heteractinida : Octactinellida : Astraeospongiidae : Astraeospongium 443.4 - 423 Ma Silurian Gypidulidae family Animalia : Brachiopoda : Rhynchonellata : Pentamerida : Gypidulidae 433.4 - 423 Ma Silurian Eodictyonella genus Animalia : Brachiopoda : Chileata : Dictyonellida : Eichwaldiidae : Eodictyonella 433.4 - 423 Ma Silurian Illaenidae family Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae 433.4 - 423 Ma Silurian Astrorhizidae family Chromista : Foraminifera : Monothalamea : Astrorhizida : Astrorhizidae 438.5 - 433.4 Ma Silurian Atrypa reticularis species Animalia : Brachiopoda : Rhynchonellata : Atrypida : Atrypidae : Atrypa : Atrypa reticularis 433.4 - 423 Ma Silurian Bumastus cuniculus species Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae : Bumastus : Bumastus cuniculus 443.4 - 423 Ma Silurian Bumastus niagarensis species Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae : Bumastus : Bumastus niagarensis 443.4 - 423 Ma Silurian Bumastus dayi species Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae : Bumastus : Bumastus dayi 433.4 - 423 Ma Silurian Bumastus tenuis species Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae : Bumastus : Bumastus tenuis 433.4 - 423 Ma Silurian Bumastus ioxus species Animalia : Arthropoda : Trilobita : Corynexochida : Illaenidae : Bumastus : Bumastus ioxus 443.4 - 427.4 Ma Silurian Ceratocephala goniata species Animalia : Arthropoda : Trilobita : Lichida : Odontopleuridae : Ceratocephala : Ceratocephala goniata 433.4 - 423 Ma Silurian Encrinurus reflexus species Animalia : Arthropoda : Trilobita : Phacopida : Encrinuridae : Encrinurus : Encrinurus reflexus 443.4 - 423 Ma Silurian Calymene celebra species Animalia : Arthropoda : Trilobita : Phacopida : Calymenidae : Calymene : Calymene celebra 443.4 - 423 Ma Silurian Cheirurus niagarensis species Animalia : Arthropoda : Trilobita : Phacopida : Cheiruridae : Cheirurus : Cheirurus niagarensis 443.4 - 423 Ma Silurian Cerauromeros hydei species Animalia : Arthropoda : Trilobita : Phacopida : Cheiruridae : Cerauromeros : Cerauromeros hydei 443.4 - 427.4 Ma Silurian Sphaerexochus romingeri species Animalia : Arthropoda : Trilobita : Phacopida : Cheiruridae : Sphaerexochus : Sphaerexochus romingeri 443.4 - 423 Ma Silurian Phanerotrema occidens species Animalia : Mollusca : Gastropoda : Murchisoniina : Phanerotrematidae : Phanerotrema : Phanerotrema occidens 443.4 - 423 Ma Silurian Hapalocrinidae family Animalia : Echinodermata : Crinoidea : Hapalocrinidae 433.4 - 423 Ma Silurian Hirneacrinidae family Animalia : Echinodermata : Crinoidea : Monobathrida : Hirneacrinidae 433.4 - 423 Ma Silurian Schizophoria (Schizophoria) iowensis species Animalia : Brachiopoda : Rhynchonellata : Orthida : Schizophoriidae : Schizophoria : Schizophoria (Schizophoria) iowensis 387.7 - 382.7 Ma Devonian Coolinia applanata species Animalia : Brachiopoda : Strophomenata : Orthotetida : Chilidiopsidae : Fardenia : Coolinia applanata 438.5 - 433.4 Ma Silurian Platystrophia biforatus species Animalia : Brachiopoda : Rhynchonellata : Orthida : Platystrophiidae : Platystrophia : Platystrophia biforatus 433.4 - 423 Ma Silurian Wurmiella excavata species Animalia : Chordata : Conodonta : Ozarkodinida : Spathognathodontodae : Wurmiella : Wurmiella excavata 430.5 - 427.4 Ma Silurian Leurocycloceras raymondi species Animalia : Mollusca : Cephalopoda : Leurocycloceras : Leurocycloceras raymondi 443.4 - 427.4 Ma Silurian Schizophoria lata species Animalia : Brachiopoda : Rhynchonellata : Orthida : Schizophoriidae : Schizophoria : Schizophoria lata 387.7 - 382.7 Ma Devonian Monograptidae family Animalia : Hemichordata : Pterobranchia : Monograptidae 433.4 - 423 Ma Silurian Dicoelosia biloba species Animalia : Brachiopoda : Rhynchonellata : Orthida : Dicoelosiidae : Dicoelosia : Dicoelosia biloba 443.4 - 427.4 Ma Silurian Plectatrypa imbricata species Animalia : Brachiopoda : Rhynchonellata : Atrypida : Atrypidae : Plectatrypa : Plectatrypa imbricata 443.4 - 427.4 Ma Silurian Leptaena (Leptaena) depressa species Animalia : Brachiopoda : Strophomenata : Strophomenida : Rafinesquinidae : Leptaena : Leptaena (Leptaena) depressa 443.4 - 427.4 Ma Silurian Pseudooneotodus bicornis species Animalia : Chordata : Strachanognathidae : Pseudooneotodus : Pseudooneotodus bicornis 430.5 - 427.4 Ma Silurian Dictyonella reticulata species Animalia : Brachiopoda : Chileata : Dictyonellida : Eichwaldiidae : Eodictyonella : Dictyonella reticulata 443.4 - 427.4 Ma Silurian Brachyprion (Protomegastrophia) profunda species Animalia : Brachiopoda : Strophomenata : Strophomenida : Strophodontidae : Megastrophia : Brachyprion (Protomegastrophia) profunda 443.4 - 423 Ma Silurian Janius nobilis species Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Cyrtiidae : Janius : Janius nobilis 443.4 - 427.4 Ma Silurian Scotoharpes telleri species Animalia : Arthropoda : Trilobita : Harpida : Harpetidae : Scotoharpes : Scotoharpes telleri 443.4 - 423 Ma Silurian Eospirifer radiatus species Animalia : Brachiopoda : Rhynchonellata : Spiriferida : Cyrtiidae : Eospirifer : Eospirifer radiatus 443.4 - 427.4 Ma Silurian Spinatrypa spinosa species Animalia : Brachiopoda : Rhynchonellata : Atrypida : Atrypidae : Spinatrypa : Spinatrypa spinosa 387.7 - 382.7 Ma Devonian Panderodus unicostatus species Animalia : Chordata : Distacodontidae : Panderodus : Panderodus unicostatus 430.5 - 427.4 Ma Silurian Decoriconus fragilis species Animalia : Chordata : Conodonta : Strachanognathidae : Decoriconus : Decoriconus fragilis 430.5 - 427.4 Ma Silurian Panderodus gracilis species Animalia : Chordata : Conodonta : Panderodontida : Panderodontidae : Panderodus : Panderodus gracilis 430.5 - 427.4 Ma Silurian Panderodus greenlandensis species Animalia : Chordata : Distacodontidae : Panderodus : Panderodus greenlandensis 430.5 - 427.4 Ma Silurian Pseudooneotodus beckmanni species Animalia : Chordata : Conodonta : Strachanognathidae : Pseudooneotodus : Pseudooneotodus beckmanni 430.5 - 427.4 Ma Silurian Resserella canalis species Animalia : Brachiopoda : Rhynchonellata : Orthida : Dalmanellidae : Resserella : Resserella canalis 443.4 - 427.4 Ma Silurian Pentlandia genus Animalia : Chordata : Osteichthyes : Phaneropleuridae : Pentlandia 443.4 - 427.4 Ma Silurian Holocystites (Holocystites) alternatus species Animalia : Echinodermata : Diploporita : Holocystitidae : Holocystites : Holocystites (Holocystites) alternatus 443.4 - 427.4 Ma Silurian
Fossil Localities	Click to show 9 fossil localities

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Wikipedia:	https://en.wikipedia.org/wiki/Milwaukee_County,_Wisconsin
Wikidata ID:	Q502294
GeoNames ID:	5263058

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References