摘要
对滇东镇雄羊场桃子崖 (北纬 2 7°36′5 3″,东经 10 4°37′4 2″)和芒部刘家沟 (北纬 2 7°36′2 2″,东经 10 4°5 2′30″)早奥陶世晚期湄潭组下部所产OmeipsiszhenxiongensisLuo ,1974新材料作了研究 ,得以揭示OmeipsisKobayashi,195 1的完整形态特征。该属除尾部具有一长一短两对边缘刺外 ,其头鞍向前逐渐扩张并发育有粗壮前刺。RenhuaiaYininYinandLi,1978应为Omeipsis的晚出异名 ,因为两者头盖并无显著差异。
Omeipsis is an endemic trilobite genus typical of the Ordovician Yangtze Block. It occurs only rarely in the Arenig of the Ordovician in association with inner shelf clastic facies. The genus was erected by Kobayashi (1951) on the basis of Acidaspis huangi Sun, 1931. Since then, only one more species, O. zhenxiongensis Luo, has further been referred to it.
出处
《古生物学报》
CAS
CSCD
北大核心
2004年第3期420-423,共4页
Acta Palaeontologica Sinica
基金
国家自然科学基金 (No .40 2 72 0 0 1)资助课题
关键词
奥陶纪
三叶虫
滇东镇
云南
形态特征
Trilobitae, Omeipis zhenxiongensis, New Material, Ordovician
