Mahantango Formation
Athyridida
Athyris spiriferoides
Atrypida
Nucleospira concinna
Pseudoatrypa devoniana
Spinatrypa spinosa
Orthida
Rhipidomella leucosia
Rhipidomella vanuxemi
Tropidoleptus carinatus
Orthotetida
Eoschuchertella arctostriata
Phacopida
Eldredgeops rana
Productida
Spinulicosta spinulicosta
Truncalosia truncata
Proetida
Monodechenella macrocephala
Pseudodechenella rowi
Rhynchonellida
Cupularostrum congregata
Sapphicorhynchus sappho
Rynchonellida
Eumetabolotoechia multicostatum
Spiriferida
Allenella tullius
Ambocoelia umbonata
Cyrtina hamiltonensis
Elita fimbriata
Mediospirifer audaculus
Megakozlowskiella sculptilis
Mucrospirifer mucronatus
Pustulatia pustulosa
Strophomenida
Arcuaminetes scitulus (Hall, 1857)
Devonochonetes coronatus
Longispina mucronata
Megastrophia concava
Pholidostrophia nacrea
Protodouvillina inequistriata
Protoleptostrophia perplana
Sinochonetes lepidus
Striatochonetes setigerus
Strophodonta demissa
Terebratulida
Cryptonella planirostra