广西象州中泥盆世晚期的海星  

A NEW SPECIES OF ASTEROZOA FROM THE MIDDLE DEVONIAN OF XIANGZHOU, GUANGXI

作　　者：韩乃仁[1] 张家志[1] 张轼[2] 

机构地区：[1]桂林工学院,广西桂林541004 [2]中国科学院南京地质古生物研究所,南京210008

出　　处：《古生物学报》2004年第1期142-146,共5页Acta Palaeontologica Sinica

摘　　要：在广西象州中泥盆统东岗岭组壳相含泥质石灰岩中发现一个海星口面化石 ,定名为Devonasterguangxiensissp .nov .。该种中盘较大 ,腕长且直 ,下缘板发育 ,口角板肥大 ,略尖 ,与美国标本Devonastereucharis(Hall)相比 ,有一定的区别。海星化石与东岗岭组常见化石Actinopteria(双壳类 )和Atrypa(腕足类 )A new species of Asterozoa, i.e., Devonaster guangxiensis sp. nov., is described from the Middle Devonian Tungkangling Formation in Xiangzhou, Guangxi. It is characterized by a very large central disk with long and straight arms, a developed inframarginal and a fat but a little sharpened mouth angle plate. By these features, it differs from the known species Devonaster eucharis (Hall) of America.

关 键 词：棘皮动物 海星 中泥盆世 广西 

分 类 号：Q915[天文地球—古生物学与地层学]