Derbya crassa (Meek and Hayden) Waagen.
Derbya keokuk (Hall) Hall and Clarke.
Dielasma bovidens (Morton) White.
Enteletes hemiplicata (Hall) Hall and Clarke.
Productus cora d’Orbigny.
Productus costatus Sowerby? de Koninck.
Productus longispinus Sowerby.
Productus nebraskensis Owen.
Productus pertenuis Meek.
Productus punctatus (Martin) Morton.