コフォケトゥス
Packard, E. L.; Kellogg, A. R. (1934). “A new cetothere from the Miocene Astoria Formation of Newport, Oregon”. Contributions to Palaeontology Carnegie Institution of Washington 447 (I): 3-62. https://www.semanticscholar.org/paper/A-new-cetothere-from-the-Miocene-Astoria-formation-Packard-Kellogg/1732133fa275e27cf53ff4919cf0ead05f37a1a0.
掲載書:Packard, Earl L.; Kellogg, Remington; Huber, Ernst (1934) (English). Marine mammals. Washington, D.C.