EXTINCT BOVID.E, CANID.E AND FELID^ FROM THE PLEISTOCENE OF THE PLAINS. 
By E. D. Cope. 
During an expedition undertaken in the summer of 1893, in the interest of the 
Academy of Natural Sciences, I obtained some mammalian remains from southern 
Kansas, and western central Oklahoma, which add to our knowledge of the latest 
extinct fauna of those regions. At Wellington, near the middle of the southern 
part of Kansas, I obtained an almost entire mandible of an iidult Elephas pri7ni- 
genhis with the third molars only present, and half worn, said to have come from a sand 
bed on the western border of the town. Accompanying it were fragments of the skull 
of a large ox related to the bison, which is described in detail in this paper. From a 
similar sand bed on the eastern edge of the town, 1 obtained fragments of bmies and 
a tusk with a molar tooth of the mammoth. From a locality about fifty miles west 
of the town of Hennesey, Oklahoma, I obtained teeth and bones of the mammoth ; 
and associated with these were the teeth and part of the skeleton of a saber-toothed 
cat as lai’ge as a lion. The man who found these fossils informed me that the bones of 
the cat were mingled with those of the mammoth, and were generally on them, as 
though death had overtaken it while feeding on the carcass of the mammoth. This 
feline is the subject of a description in the following pages. The Oklahoma fossils 
are stained with the red ? Permian clay of that region, more or less of which ad- 
heres to them. This formation would furnish the material for any later deposit of 
a local character, or would become sufficiently soft in wet periods or places to engulf 
or overwhelm animals of the land. 
CANIS Linn. 
Canis indiaxensis Leldy, Jour. Acad. Nat. Sci. Phila., 1869, 368. Cunis prmKunm \x\<\y . Pnv 
ceed. Acad. Nat. Sci. Phila., 18-54, 200 ; Jour. Acad. Nat. Sci. Phila. 18.56 III. 167. PI. II. 
Fig. 11-12. Plate XXI, Figs, 14-16. 
Portions of the superior dentition of a large dog were found by Prof W. F. 
Cummins, in the Equus horizon of the Tule Canyon, on the Staked Plains' ot 
Texas, and submitted to me for determination. Considerable interest attaches to 
the specimens, for the larger Carnivora which were associated with the horses, 
camels, etc., of the Equus Fauna, have been hitherto unknown. 
The teeth indicate a dog of considerably larger dimensions than the wolf, and 
one differing from it also in the relatively greater anteroposterior diameter of the 
first superior true molar. The dimensions a little exceed those of the typical speci- 
men of Canis indianeiisis of Leidy, which 5vas described from a right maxillary 
1 See Annual Report of the Geological Survey ot Texas for 1892 ; Report on the Vertebrate 
Paleontology of the Llano Estacado by E. D. Cope. 
