North American plesiosaurs.

Bibliographic Details
Main Author:	Williston, Samuel Wendell 1851-1918
Other Authors:	Farrington, Oliver C. (Oliver Cummings) 1864-1933
Format:	Book
Language:	English
Published:	Chicago 1903.
Series:	Fieldiana: geology v. 2, no. 1 [from old catalog]
Subjects:	Plesiosauria.