Mount Marion Formation
Athyridida
Athyris cora
Leptospira gibbosa
Atrypida
Nucleospira concinna
Pseudoatrypa devoniana
Orthida
Tropidoleptus carinatus
Orthotetida
Eoschuchertella arctostriata
Rhynchonellida
Cherryvalleyrostrum limitare
Cupularostrum congregata
Rynchonellida
Eumetabolotoechia multicostatum
Spiriferida
Ambocoelia umbonata
Cyrtina hamiltonensis
Elita fimbriata
Mediospirifer audaculus
Megakozlowskiella sculptilis
Strophomenida
Arcuaminetes scitulus (Hall, 1857)
Megastrophia concava
Protodouvillina inequistriata