Baataromomys, NI & BEARD & MENG & WANG & GEBO, 2007

NI, XIJUN, BEARD, K. CHRISTOPHER, MENG, JIN, WANG, YUANQING & GEBO, DANIEL L., 2007, Discovery of the First Early Cenozoic Euprimate (Mammalia) from Inner Mongolia, American Museum Novitates 3571 (1), pp. 1-12 : 3

Baataromomys , new genus

TYPE SPECIES: Baataromomys ulaanus , new species.

DIAGNOSIS: Smaller than all other omomyids except Teilhardina , Anemorhysis , Tetonoides , Trogolemur , and Sphacorhysis . m2 differs from that of Trogolemur , Sphacorhysis , Anemorhysis , and Tetonoides in having a smaller paraconid that is less fully connate with the metaconid; a lower, less projecting entoconid; a much weaker crest connecting the metaconid with the entoconid; a weaker buccal cingulid; and in lacking a mesially expanded and shelflike paracristid. m2 differs from that of Teilhardina asiatica , T. belgica , and North American ‘‘ Teilhardina ’’ species in having a smaller paraconid that is more closely appressed to the metaconid, and a relatively lower hypoconid and cristid obliqua. m2 further differs from that of North American ‘‘ Teilhardina ’’ species in having a lower entoconid, a much weaker crest connecting the entoconid with the metaconid, and a weaker buccal cingulid.

INCLUDED SPECIES: Teilhardina brandti Gingerich, 1993:322 .

GEOLOGICAL RANGE: Bumbanian of Inner Mongolia and earliest Wasatchian (Wa-0) of Wyoming.

ETYMOLOGY: Baatar, Mongolian, hero, widely used as Mongolian first name; and omomys, Greek, shoulder-mouse.

Baataromomys ulaanus , new species figure 1

HOLOTYPE: IVPP V14614 , an isolated right m2; only known specimen.

TYPE LOCALITY AND AGE: Wulanboerhe, Erlian Basin, Inner Mongolia. Bumbanian of Inner Mongolia.

DIAGNOSIS: m2 differs from that of B. brandti in having a weaker paracristid and a paraconid that is more lingual and less mesial in position.

ETYMOLOGY: Ulaan, Mongolian, red. The only known specimen was recovered from a prominent Bumbanian red bed in the Erlian Basin.

Figures

Fig. 1. Baataromomys ulaanus, n. gen. et sp., holotype, IVPP V14614, isolated right m2. A, Occlusal view; B, lingual view; C, buccal view. Scale bar indicates 1.00 mm.