Uintatherium

Abstract: Fossils of the tillodonts were for a long time unknown in Asia. It owes to the work of Gazin (1953) that brought attention to the fact that Adapidium huangkoense Young (1937), from the upper Eocene of Honan, tentatively considered as a primate is really a tillodont. The present writer, while visiting this district in 1953, a fragment of rodent-like incisor of fairly large size was encountered, but its affinity with the tillodonts was not aware of then. Later, in 1957, from the Upper Eocene Lushih beds at Mengchiapu of Lushih basin in southwestern Honan (Chow, 1959) the writer collected another incisor fragment of very large size, evidently of tillodont type. Recently, in 1962, Mr. C. K. Li of the Institute (IVPP) while investigating the Kuanchuang Series in central Shantung collected another tillodont specimen, a mandible of a Trogosus-like tillodont. It is from the same beds and locality where fossils of Hyrachus, ?Uintatherium, Paleotherium, Coryphodon flerowi etc. (Chow and Tung, 1963) were found. A description of these newly discovered tillodont materials is being given in this paper.