. 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. AMERICAN MUSEUM NOVITATES [No. 376 Opisthopsalis' vetus, now genus and species Type.—Amer. Mu.'ecjual protoeonid and metaconid and slightly smaller, internal paraconid; talonid slightly narrower than trigonid, hasined, with thn-*' cusps, the hyixx-oiiulid .somewhat the highest. M3 large, wit
. 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. AMERICAN MUSEUM NOVITATES [No. 376 Opisthopsalis' vetus, now genus and species Type.—Amer. Mu.'ecjual protoeonid and metaconid and slightly smaller, internal paraconid; talonid slightly narrower than trigonid, hasined, with thn-*' cusps, the hyixx-oiiulid .somewhat the highest. M3 large, with elevated, strongly carna-swial trigonid, metaconid (Itroken in type) app)arently present hut smaller than paraconid; hwl long and narrow, with three cusps, elevated hy{)oconuUd. Jaw slender. I** with simple, high, slentler crown. M' small, transverse, meta<-one reduced, strong para-sfylar .spur. Length of skull about (iO mm. (much cru-shed). Brain case very long and narrow, with prominent .sagittal and laml)doid Fig. tJ. Opixlhopsulin retm, new genus and sjK'cies. A, right lower jaw with canine, external vii'w. H, left lower jaw with canine, P^, Mj, and M3, external view, and crown view of preserved cheek teeth. Distortion of left lower jaw corrected. Ty|H'. Twice natural size. The ty|M' of thJH species is a skull, with articulated lower jaws, nearly complete', hut so crushed and hroken as to yield few definite characters. The riKht lower che<'k and most of those of the upjier jaws were crushed out of i)lac<' and re<luced to niinut*m#«ir. behind: ^aXM, I allumon to the oarnaaaial posterior lower Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Central Asiatic Expeditions (1921-1930); Andrews, Roy Chapman, 1884-1960; Matthew, William Diller, 1871-1930. [New York : America
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