报道采自昆明、武定地区下寒武统沧浪铺阶乌龙箐组下部黄绿色页岩层中的双瓣壳节肢动物Tuzoia和Isoxys,讨论Tuzoia和Isoxys两属的特征和种群、地质、地理分布、软体附肢、分类位置、古生态及其演化趋势。详细描述关山动物群中Tuzoia和Isoxys的3种(其中2新种):TuzoiasinensisP’an,1957,T.tylodesaLuoetHusp.nov.,IsoxyswudingensisLuoetHusp.nov.,和I.sp.。

Wu report the new materials of two bivalved arthropods, Tuzoia and Isoxys, from the greenish mudstones of the lower part of the Wulongqing Formation, Canglangpuian, Lower Cambrian in Kunming and Wuding area. The generic characteristics, geological and geographic distribution, soft tissues, taxonomic position, paleoecology, and the evolution trend of the two bivalved arthropods are also discussed. Three species (including 2 new species) of Tuzoia and Isoxys from the Guanshan Fauna are described in detail, including Tuzoia sinensis P'an, 1957,T. tylodesa Luo et Hu sp. nov., Isoxys wudingensis Luo et Hu sp. nov. and I. sp.

Q959.22

国家重点基础研究发展计划(973计划) , 国家重点实验室基金 , 云南省地质科学研究基金