河南濮阳西水坡新石器时代遗址出土的瓣鳃类共有33种，其中31种组成了Lamprotula-Cuneopsis-Unio组合，称为西水坡丽蚌动物群，其时代为中全新世早期。据贝壳14C测年资料（6 465±45 a BP）和同层出土的陶器特征， 为仰韶文化早期（7 000～6 000 a BP）。该动物群与长江中,下游流域洞庭湖、鄱阳湖和太湖及其周围水域的现代丽蚌动物群组合特征非常接近，同属东洋界、中印亚界动物地理区， 亚热带湿热气候。根据该动物群反映的生态环境，仰韶文化早期该地区的古环境地处亚热带，气候湿热，雨量充沛，草木茂盛，河流成网，湖泊遍野，水质优良，水生生物丰富，优越的自然环境为先民提供了从事农耕、渔猎的生栖条件。
Pelecypoda unearthed from the Neolithic Xishuipo Site of Puyang City，Henan Province are studied in this paper 31 species among 33 species recognized compose the LamprotulaCuneopsisUnio assemblage which has been known as the Xishuipo Lamprotula fauna that are considered as early Middle Holocene On the basis of 14C dating（6 400±135 a BP ）of shell and characteristic of pottery unearthed，it may be concluded that the manikin culture is considered as Early Yangshao Culture（7 000～6 000 a BP）This fauna is similarto the living Lamprotula fauna from the Dongting Lake，Poyang Lake and Tai Lake and their surrounding waters are in their assemblage characteristics, and they all belong to the East Ocean Kingdom and ChinaIndia Subkingdom, whichis situated in the subtropic zone
