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