Milwaukee Formation
Actinocerida
Ormoceras bebryx
Athyridida
Athyris vittata randalia
Atrypida
Atrypa reticularis
Spinatrypa spinosa milwaukeensis
Auloporida
Aulopora annectens
Chonetida
Striatochonetes schucherti
Cryptostomata
Hemitrypa tenera
Lichenalia concentrica
Ctenostomata
Ascodictyon floreale
Ascodictyon stellatum
Condranema monroei
Heteronema monroei
Rhopalonaria tenuis
Cystoporata
Cyclotrypa collina
Fistulipora monticulata
Fistulipora romingeri
Cystoporida
Sulcoretepora hamiltonensis
Discinida
Lingulodiscina marginalis
Euomphalina
Platyceras hornefferi
Favositida
Striatopora iowensis
Lingulida
Barroisella complanata
Barroisella milwaukeensis
Barroisella rectilatera
Orbiculoidea telleri
Modiomorphida
Modiomorpha diffidens
Modiomorpha elongata
Modiomorpha pediformis
Modiomorpha saccula
Modiomorpha schucherti
Monobathrida
Melocrinites nodosus
Melocrinites nodosus spinosus
Melocrinites pentangularis
Melocrinites subglobosus
Nuculanoida
Palaeoneilo corrugata
Palaeoneilo dentata
Palaeoneilo devexa
Palaeoneilo milwaukeensis
Palaeoneilo persinuata
Palaeoneilo pulchella
Oncocerida
Acleistoceras breviposticum
Acleistoceras calvini
Acleistoceras fusiforme
Acleistoceras whitfieldi
Acleistoceras wisconsinense
Orthida
Schizophoria iowensis musculosa
Schizophoria lata
Orthotetida
Eoschuchertella arctostriata
Pentamerida
Pentamerella multicostata
Petalodontiformes
Gamphacanthus politus
Phacopida
Eldredgeops norwoodensis
Pholadomyoida
Edmondia fragilis
Phyllocarida
Paraechinocaris punctata
Productida
Productella spinulicosta
Pterioida
Mytilarca cingulosa
Mytilarca suberectus
Ptyctodontida
Eczematolepis telleri
Ptyctodontiformes
Ptyctodus calceolus
Ptyctodus ferox
Rhynchonellida
Cupularostrum depressa
Cupularostrum scitulus
Eumetabolotoechia greeni
Spiriferida
Spinocyrtia milwaukeensis
Tylothyris bimesialis
Spiriferinida
Cyrtina triquetra
Cyrtina umbonata
Eosyringothyris occidentalis
Orthospirifer iowensis
Orthospirifer milwaukeensis
Strophomenida
Protoleptostrophia serrata
Strophodonta halli
Taxocrinida
Taxocrinus telleri
Terebratulida
Cranaena thomasi
Trepostomata
Eridotrypa appressa
Leioclema minutissimum
Tubulioporata
Hederella magna