Class Inarticulata (Camb.-Rec.)

Lingula (Cambrian to Recent)

Acrothele (M. Cambrian)

Class Articulata

Order Orthida

Platystrophia (Ord. to Sil.)

Order Pentamerida

Pentamerus (Silurian)

Order Strophomenida (L. Ord. - L. Jur.)

Strophomena (Ord.)

Leptaena (Ord.)

Derbyia (U. Carboniferous - Permian)

Dictyoclostus (U. Carboniferous - Permian)

Chonetes(Silurian - Permian)

Order Rhynchonellida (M. Ord. - Jur.)

Rhynchonella (Ord.)

Order Spiriferida (L. Ord. - Jur.)

Atrypa (Sil. - Dev.)

Neospirifer (U. Carb. - Perm.)

Mucrospirifer (L. Dev. - L. Carb.)

Composita (U. Devonian - Permian)

Ambocoelia (L. Dev. - L. Carb.)

Cyrtina (Silurian - Permian)

Order Terebratulida (L. Dev. - Recent)

Oleneothyris (Eocene)

Kingena (Cretaceous)