Welles, Samuel P.,  1909-1997. <br/><br/>
Elasmosaurid plesiosaurs with description of new material from California and Colorado / 
by Samuel Paul Welles. 
 - Berkeley ;  Los Angeles :  University of California Press,  1943. 
 - 3 p. l., 125-248 p. incl. illus., plates, tables, diagrs., front., 3 fold. pl.  33 cm. 
 - Memoirs of the University of California,  v. 13, no. 3 .
<br/><br/>"Literature cited": p. 213-215. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Elasmosauridae.<br/>Plesiosauria.<br/>Paleontology--Mesozoic.<br/>Paleontology--California.<br/>Paleontology--Colorado.