. Central Asiatic Expeditions of the American Museum of Natural History, under the leadership of Roy Chapman Andrews : preliminary contributions in geology, palaeontology, and zoology. Central Asiatic Expeditions (1921-1930); Scientific expeditions; Natural history; Scientific expeditions; Natural history. A, Fig. 2. Desmatotherium mongoliense. Lower jaw, No. 20155. Natural size, external and superior views. Type Desmatotherium fissum, new species Type.—No. 20161, upper jaw fragment, p^-'^-. Characters.—Somewhat smaller than D. mongoli- ense, the internal cusps of p" and p^ wide ap
. Central Asiatic Expeditions of the American Museum of Natural History, under the leadership of Roy Chapman Andrews : preliminary contributions in geology, palaeontology, and zoology. Central Asiatic Expeditions (1921-1930); Scientific expeditions; Natural history; Scientific expeditions; Natural history. A, Fig. 2. Desmatotherium mongoliense. Lower jaw, No. 20155. Natural size, external and superior views. Type Desmatotherium fissum, new species Type.—No. 20161, upper jaw fragment, p^-'^-. Characters.—Somewhat smaller than D. mongoli- ense, the internal cusps of p" and p^ wide apart, that of p^ indicated by a sharp groove on the inner face and a broad- ening of the apex. Paracone and metacone on p^^ well separated, convex externally, parastyles lower and some- what smaller cusps, no distinct Fig. 3. Desmato- therium fissum. Up- per premolars, type specimen, No. 20161. Natural size, crown view. Teleolophus^ medius, new genus and species Type.—No. 20166, lower jaw with pi-ms. Paratypes.—No. 20163, lower jaw, p4-m3; No. 21064, upper jaw, dp^-m^; No. 20165, miscellaneous upper and lower teeth and jaw fragments. All from the Irdin Manha formation. Telegraph Line Camp. Characters.—Lower molars sharply cross-crested, increasing in size from first to third, no heel on nia, premolars all two-rooted, non-molariform, a transverse crest in front and an anteroposteriorly-crested hypoconid behind, entoconid rudimentary. On p2 the transverse crest is imperfect and on pi barely suggested. Upper molars with high, crested protoloph and metaloph curving around externally to join the flattened paracone at its anterior and posterior ends; the metacone has practically disappeared, the only vestiges of it being small crests ( = free posterior flange of 'Greek TtXeioi, complete, perfect; Xu0<n, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance
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