Mesozoic and Ccenozoic Geology and PalcBontology. 243 



do, Brontotheriiim gigas, and Elotherimn crassum; and from the Up- 

 per Eocene of Wyoming,* Dinoceras laticeps. 



Dr. Joseph Leidyf described, from the Bridger Group in the Buttes 

 of Dr}' creek, Hyopsodus minusciilus, 3Iysops fraternus, Washakius 

 insignis, Saniva major ; from the Grizzly Buttes, Sinopa eximia ; from 

 the Buttes, ten miles from Dry Creek Canon, Amiauintaensis; from the 

 junction of Sand and Green rivers, A. media; from Henry's Fork, A. 

 gracilis; from Dry creek, Hypaviia elegans ; from the junction of Big- 

 Sandy and Green rivers, Lepidosteus atrox, now Clastes atrox ; from 

 Washakie station, L. simplex, L. notabilis, now Clastes notabilis ; from 

 Big Sandy and Green rivers, Pimelodus antiquus, Phareodus acutiis, 

 Clupea alia, now Diplomystiis alius ; from the Miocene of Bridger 

 creek, a tributary of John Day's river, one of the branches of the 

 Columbia, in Oregon, Dicotyles pristinus, JElotherium imperator ; from 

 Washington county, Texas, Anchitherium australe ; from Red Rock 

 creek, a tributary' of Jefferson Fork of the Missouri, Anchitherium 

 rt«7res^e ; from Richmond, Y'wgxmo., Procamelus vii'giniensis, Tautoga 

 conidens,l Acipenser ornatus ; from the Post-pliocene of California, 

 Felis imjjerialis, and Aiichenia hesterna. 



Prof F. B, Meek§ described, from Church Buttes, Physa bridgeren- 

 sis; from twelve miles south of Fort Bridger, Pupa leidyi; and from 

 the upper beds exposed at Separation, on the U. P. R. R., Limncea com- 

 jyactilis. 



Prof Lesquereux described, from South Park, near Castello's Ranch, 

 Ophioglossum alletti, and Planera longifolia; from Elko station, Seq- 

 uoia an giisti folia. Thuya garmani, and Abies nevadensis. 



In 1874, Prof. E. D. Cope|| described, from the Bridger Group of 

 South Bitter creek, Eobasileus galeatus, and Achcenodon insolens ; 

 from the Miocene of Colorado, Symborodon hypoceras, Anchitherium 

 exoletum, and Hippotherium paniense. He described from the Eocene 

 of the Middle and South Parks, Colorado,^ Amyzon commune, and 

 Clupea theta, now Diplomystus thetus ; from the White River Group, 

 Hypertragulus tricostatus, Eloiherium ramosum, now Pelonax ram- 

 osus, and Jlenotherium lemnrinum ; from the Loup Fork Group, 



* Am. Jour. Sci. and Arts, 3d ser., vol. 

 t Cont. to Ext Vert. Fauna, W. Terr. 

 X Proc. Acad. Nat. Sci. 



I 6th Ann. Rep. U- S. Geo. Sur Terr. 



II 7th Ann. Rep. U. S. Geo. Sur. Terr. 

 IT Bull. U. S. Geo. Sur. Terr. 



