滇西早石炭世双环圆顶海百合化石

CRINOIDAL FOSSILS OF DICYCLIC CAMARATA IN LOWER CARBONIFEROUS OF WEST YUNNAN

描述滇西早石炭世双环圆顶海百合2科、4属、12种,含一新科、2新种及1未定种,填补我国海百合研究空白。

The crinoid fossils of dicyclic camarata dealt with in this paper are more than 150 calyxes well preserved, which can be divided into 12 species, 4 genera, 2 families including 2 new species and 1 indefinite species, 1 new family. These species are Rhodocrinites fortis Chen et Yao, Rexquisitus Chen et Yao, R? baccatus(Wright), Cribanocrinus excavatus Chen et Yao, Cbashanensis Chen et Yao, Cintermidius Chen et Yao, Yunnanocrinus tympaniformis Chen et Yo, Ycyathomorphus Chen et Yao, Ydelicatulus Chen et Yao, Yrobustus(spnov), Ydeformis(spnov), Gilbertsocrinus sp, which fill the gap in the study of crinoid in China. They were mostly collected from Lower Carboniferous near the Lutu village of Xiyi town, Baoshan City in 1984 and 1986. A few of them were supplementally gathered from Hongtuzhai and Wangjiadashan in 2001 and 2002.