124 0. C. Marsh—Fossil Mammals and Birds 
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| 
and aft axis of the crown. In the canine tooth, the base of the 
crown forms a broader oval than in most of the recent Canide. 
Measurements. 
Antero-posterior diameter of last upper premolar, . --- --- 9° lines. 
Greatest transverse diameter of same,..-._...-.-.----- = iF 
Seetoe GF PINT CUED no enna te he ss Cee ‘ 
weGrgns OF postenor tulela. 3: 75 “ 
Antero-posterior diameter of canine at base of crown,--- E ‘ o-. 
Transverse diameter of same, .--. a 
e above sposimens were eionnd by H. B. dere a the 
Bes at Grizzly Buttes, Western Wyoming 
one palustris, gen. et Sp. Nov. 
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Measurements. 
Length of portion of jaw containing last three upper mo- 
TER oo ae Sa had a .--- 10°5 lines. 
Antero-posterior es a second upper molar,.... 2°35 “ 
Transverse diameter of same,._.___.._.........---- 4° e 
The ore now fiutodiiing this species were discovered 
by Dr. J. V. A. Carter, and the writer, near Fort Bridger, 
Wr yensag 
Amphicyon angustidens, sp. nov. 
Another extinct carnivore, about as large as the nso a a 
species, and perhaps related to the same group, is represen 
by the anterior portion of a right lower jaw, containing the — 
ree premolars, and the canine. The ramus is slender, but — 
rather deep. The premolar teeth are low, and unusually com- — 
the posterior tee oe core developed het | in that species. 
