GEOLOGICAL SURVEY OF THE TERRITORIES. 575 



ber 21. 1872, under the name of Tinoceras grandis, which thus becomes 

 a synonym of Loxolophodon cornutus. As the name Tinoceras had never 

 been described prior to that date, although applied to the Titanothe- 

 rium (?) ance])s. Marsh, previously without description, this uamebecomes 

 a synonym of Loxolojjhodon or Uohasileus, should the two latter ulti- 

 mately prove to be identical. 



Locality. — The remains of the Loxolophoclori cornutus -were found by 

 the writer in August, 1872, \n a ravine of the bad lands of Wyoming. 

 The greater part of the cranium, femur, &c., were excavated from the 

 base of a cliff of jjerhaps 250 feet in height, on the side of a ravine ele- 

 vated about 1,000 feet, in the Mammoth Buttes, on South Bitter Creek. 

 As the basin of Bitter Creek is 7,500 feet above the sea, the fossil was 

 taken from an elevation of 8,500 feet. The horizon is the Bridger 

 Group of the Eocene of Hayden. 



EOBASILEXJS, Cope. 



Proceedings of the American Philosophical Society, 1872 p. 485, (separata, August 20.) 



As pointed out above, this genus resembles Loxolopliodon in the 

 cervical vertebrjc, but agrees with Uintatherium in the rudimental .con- 

 dition of the nasal horu-cores, which are mere tubercles. The poste- 

 rior or third pair of horn-cores are also very different, and probably 

 stand on the largely developed lateral crests of the superior surface of 

 the craniu^m, as in Uintatherium. They are apparently preserved in U. 

 furcatinn, (which is not the type of the genus,) and are compressed from 

 base to summit ; in Loxolopliodon the base is nearly cylindric. 



The characters of this genus had not been indicated in any of the 

 descriptions published by paleontologists jmor to its establishment as 

 above cited. 



The cervical vertedrce in U. pressicotiiis are very short. The limbs are 

 much as in Loxolophodon, as are the scapula and pelvis. The symphysis 

 pubis of U. pressicornis, or an ally, is short, and was separated from the 

 ischiadic symphysis; but whether this belongs to the genus is not 

 entirely certain. 



The unciform bone, of perhaps the same species as the above, displays, 

 as in living proboscidians, three infdsrior facets. The external facet is 

 deeply concave, and unites v;ith the superior face by an acute angle. It 

 supported the small outer toe by its metatarsus directly. The other two 

 are more nearly on one plane, and are deeper than wide. The unciform 

 is in form a little less than a quarter of a circle, and the external (anterior) 

 depth is one half its transverse length. Its superior surface is slightly 

 convex. 



EOBASILEUS PRESSICORNIS, CopS. 



, Loxolopliodon pressicornis, Cope. Proceed. Araer. Philos. Soc, 1872, p. 580, (published 

 August 19.) Loc. cit., p. 488, (August 22.) Eohasileus cornutus, Cope, 1. c, p. 485, 

 (August 20,) not Loxolophodon cornutus, Cope, 1. c, August 19. 



Eepresented by numerous portions of the cranium, with fragments of 

 limbs of one individual ; of almost all portions of the skeleton, except 

 the cranium, of a second. A humerus, with astragalus of a third, is of 

 uncertain reference, while a single humerus of another specimen may 

 belong here. Fragments of several other individuals of approjpriate 

 size may pertain to it. 



The cranium is represented by nasal, maxillary, malar, occipital bones, 

 &c. The first named has a half conic apex, and an oblique compressed 



