Illinois
Atrypida
Pseudoatrypa devoniana
Orthida
Tropidoleptus carinatus
Productida
Spinulicosta spinulicosta
Rynchonellida
Eumetabolotoechia multicostatum
Spiriferida
Cyrtina hamiltonensis
Mediospirifer audaculus
Megakozlowskiella sculptilis
Strophomenida
Longispina mucronata
Strophodonta demissa