Gabb, W. M. (1876). Note on the Discovery of representatives of three orders of fossils new to Cretaceous Formations of North America. Proceedings of the Academy of Natural Sciences of Philadelphia. 28: 178, pl. 5.
364974
Gabb, W. M.
1876
Note on the Discovery of representatives of three orders of fossils new to Cretaceous Formations of North America
Proceedings of the Academy of Natural Sciences of Philadelphia