L. William Stephenson, ?Larger invertebrate fossils of the Woodbine Formation (Cenomanian) of Texas?, Geological Survey Professional Paper, vol. 242, pp. 1-226, 1952.

E. James Moore, ?Tertiary marine pelecypods of California and Baja California: Nuculidae through Malleidae?, Geological Survey Professional Paper, vol. 1228-A, pp. A1-A108, 1983.

E. James Moore, ?Tertiary marine pelecypods of California and Baja California: Nuculidae through Malleidae?, Geological Survey Professional Paper, vol. 1228-A, pp. A1-A108, 1983.

L. William Stephenson, ?Larger invertebrate fossils of the Woodbine Formation (Cenomanian) of Texas?, Geological Survey Professional Paper, vol. 242, pp. 1-226, 1952.