广东南雄古新世一新的裂齿类

记述了广东南雄盆地早～中古新世上湖组上部发现的裂齿目一新属新种──杨氏华南兽（Ｈｕａｎａｎｉｕｓ ｙｏｕｎｇｉ ｇｅｎ． ｅｔ ｓｐ． ｎｏｖ．）。新属在上、下前日齿不臼齿化，上臼齿无次尖，下臼齿三角座和跟座均呈Ｖ形等方面显得原始。但在颊齿单面高冠，上臼齿原尖前、后脊分别与前、后附尖相连，小尖发育，具初始的次尖架，下臼齿略呈双曲拱柱状，具下后附尖等方面显示了向典型的裂齿类方向发展。

A NEW TILLODONT FROM THE PALEOCENE OF NANXIONG BASIN,GUANGDONG

Tillodontia is an old and extinct mammalian order, ranging from Paleocene to Eocene in North America and Eurasia. It is also a small group of Mammalia, including only a single family-Esthonychidae. Fossils in North America have been studied throughly and five genera (Esthonyx Trogosus, Tillodon, Megalesthonyx and Azygonyx) were recorded. One or two genera (Plesiesthonyx-someone thought it was a synonym of Esthonyx,and Franchaius) were reported from Europe. In Asia three Paleocene genera Meiostylodon, Interogale and Anchilestes) apart from four Eocene genera (Adapidium, Kuanchuanius, Chungchienia and Basalina) have been studied in the past.In the present paper was described a new genus and species, Huananius youngi from the Paleocene of Nanxiong Basin, Guangdong Province.