Cockerell, Theodore D. A. (Theodore Dru Alison), 1866-1948.Cockerell, W. P. (Wilmatte P.)Rohwer, S. A. (Sievert Allen), 1887-1951.Florissant Expeditions (1906-1908)2005-10-062005-10-061906http://hdl.handle.net/2246/1764p. 459-462 : ill. ; 24 cm.Includes bibliographical references (p. 459).560247 bytesapplication/pdfen-USQH1 .A4 vol.22, art.27, 1906Mollusks, Fossil -- Colorado -- Florissant Region.Paleontology -- Colorado -- Florissant Region.text