PaleoDB taxon number: 128037
Full reference: R. Zangerl. 1953. The vertebrate fauna of the Selma Formation of Alabama. Part III. The turtles of the family Protostegidae. Fieldiana: Geology Memoirs 3(3):63-133
Type specimen: TMM 924, a partial skeleton. Its type locality is Lake Waco Dam, which is in a Cenomanian marine shale in the Eagle Ford Formation of Texas.