Mount Marion Formation
Athyridida
Athyris cora
Orthotetida
Eoschuchertella arctostriata
Rhynchonellida
Cherryvalleyrostrum limitare
Cupularostrum congregata
Rynchonellida
Eumetabolotoechia multicostatum
Spiriferida
Ambocoelia umbonata
Cyrtina hamiltonensis
Elita fimbriata
Mediospirifer audaculus
Strophomenida
Arcuaminetes scitulus (Hall, 1857)