Special Papers, Issues 9-10Society, 1938 - Geology |
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altitude Anderson and Hanna andersoni Dickerson aragoensis articular ball beds body whorl Bull Calamagras Calif Cape Arago centrum Clark and Woodford Coaledo Comstock coosensis Cope Coquille River Cowlitz Crotalus dentary Dept diameter diapophyses Domengine dorsal Eocene fauna figures fossil Gabb GASTROPODA GENOTYPE genus Glide Hendon Holotype Holotype U. C. hornii Gabb hypapophysis keel length locality A-662 locality A-858 locality U. O. 139 Lower Umpqua margin Marsh median Meganos meganosensis Merriam and Turner neural arch neural canal neural spine North Umpqua River Ogmophis ophidian Oregon oregonensis Palaeophis Paleont Paratype Paratype U. C. Philadelphia Acad Plate Pleistocene Plesiotype U. C. posterior Publ ribs ridge Roseburg sandstone shales Shell slightly snake species Specimen U. C. Stewart subsp surface Surv suture Tejon thoracic vertebrae Topotype transverse Turritella Tyee U. S. Geol umpquäensis Univ Upper Umpqua uvasana Conrad Venericardia ventral Weaver and Palmer whorls zygapophyses zygosphene