Hustedia mormoni (Marcou) Hall and Clarke.
Lingula umbonata Cox. If this species is considered separate from L. mytiloides, the specimens here referred to would probably be classed with the latter.
Productus cora d’Orbigny.
Productus longispinus Sowerby.
Productus nebraskensis Owen.
Productus pertenuis Meek.
Productus semireticulatus (Martin) d’Orbigny.
Productus symmetricus McChesney.
Pugnax utah (Marcou) Hall and Clarke.
Reticularia perplexa (McChesney) Schuchert.