Archive image from page 72 of Description of new carnivores from. Description of new carnivores from the Miocene of western Nebraska descriptionofnew45pete Year: 1910 PETERSON! NEW CARNIVORES FROM MIOCENE OF, WESTERN NEBRASKA 277 Matthew and Gidley doubtfully referred this type to Potamotlierium. As this Ameri- can form now stands I cannot see that it is much nearer Potamotlierium than Steno- gale as the jaw is deeper in proportion ; it is also somewhat shorter and more ro- bust, the symphysis is lighter, the premolars are smaller and Ms larger than in the former genus, while the latter genus
Archive image from page 72 of Description of new carnivores from. Description of new carnivores from the Miocene of western Nebraska descriptionofnew45pete Year: 1910 PETERSON! NEW CARNIVORES FROM MIOCENE OF, WESTERN NEBRASKA 277 Matthew and Gidley doubtfully referred this type to Potamotlierium. As this Ameri- can form now stands I cannot see that it is much nearer Potamotlierium than Steno- gale as the jaw is deeper in proportion ; it is also somewhat shorter and more ro- bust, the symphysis is lighter, the premolars are smaller and Ms larger than in the former genus, while the latter genus has the under border of the lower jaw very much more curved fore-and-aft, the premolars are too large in proportion to the car- nassial, the heel of the latter is entirely different in shape, and very much smaller, and the tubercles of the teeth are evidently sharper and higher than in the American specimen. The latter form should, I think, occupy a new generic position (Brachy- gate) somewhat near the Oligobunis phylum although the premolars are proportion- ally smaller than in the latter, especially in the transverse diameter. In Paroligo- bunis the jaw is pi-oportionally shorter and heavier, the alveolar border is more curved from before backward, the premolars are more crowded, and the carnassial has apparently a sborter heel than in the new genus here proposed. Fig. G9. Alveolar Border and External View of Jaw of Bruchypsalis pacijcepltatus Cope. Nat. size. (Cope col- lection, No. 8544, Am. Mns. Natural History.) Brachypsalis pachycephalia Cope was proposed (7. c, p. 951) on a rather inade- quate type, a left mandibular ramus, from the same locality in which Stenogale robusta was found. Professor Cope afterwards referred this type to Potamotheriwm of Europe, while Matthew and Gidley (/. c, p. 254) accept the type as valid and distinct from Potamotlierium. In a former paper30 the present writer regarded Paro- ligoburvis (Brachypsalis) simplicideiis as possibly an ancest
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