TWO NEW SPECIES OF PROTOCONULARIIDS FROM THE EARLY CAMBRIAN IN SOUTH SHAANXI, CHINA

Emeiconularia amplcanalis sp.nov. and Carinachites platus sp.nov. of protoconulariids are described from Kuanchuanpu Member of the Dongying Formation near the Sinian-Cambrian boundry of Ningqiang Country, Shaanxi Province. These fossils are diversified in shape and different in size. The fossils of bilateral, tri-radial and tetra-radial- symmetry characterize the Carinachites biota in early Cambrian in south Shaanxi. Tri-radial fossils occur both near the Sinian-Cambrian boundary of South Shaanxi Province and Emei region,Sichuan Province. This is important in dividing and correlating the Sinian-Cambrian boundary. The discovery of two new species improve our knowledge of diversity for protoconulariids. Meanwhile,it provides new clue for the hypothesis about diverse cnidaria in early Cambrian.