New Ichthyosaur from the Upper Cretaceous Mowry Formation of Wyoming (1939)

Nace, R.L., 1939, New ichthyosaur from the Upper Cretaceous Mowry Formation of Wyoming: Geological Survey of Wyoming [Wyoming State Geological Survey] Reprint 7, p. 673–686. (Reprinted from American Journal of Science, v. 237, September, 1939.)