[关键词]
[摘要]
对滇东镇雄羊场桃子崖(北纬27°36′53″, 东经104°37′42″)和芒部刘家沟(北纬27°36′22″, 东经104°52′30″)早奥陶世晚期湄潭组下部所产Omeipsis zhenxiongensis Luo, 1974新材料作了研究,得以揭示Omeipsis Kobayashi, 1951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.Renhuaia Yin in Yin and Li, 1978应为Omeipsis的晚出异名,因为两者头盖并无显著差异.
[Key word]
[Abstract]
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.
[中图分类号]
Q915.819.1
[基金项目]
国家自然科学基金 (No .40 2 72 0 0 1)资助课题
