Reference
Williston, S. W. and Moodie, R. L. 1917. Ogmodirus martinii, a new plesiosaur from the Cretaceous of Kansas. The Kansas University Science Bulletin, 10, (5), 61–73.
Williston, S. W. and Moodie, R. L. 1917. Ogmodirus martinii, a new plesiosaur from the Cretaceous of Kansas. The Kansas University Science Bulletin, 10, (5), 61–73.