笔者等在研究描述青海南部及其邻区的瓣鳃类化石时,发现藏北唐古拉地区被命名为土门格拉群的地层内,存在大量的不同时代的动物化石。为此,我们基于对瓣鳃类化石的研究,并引证一些菊石动物和植物化石等材料,略谈对唐古拉地区所谓土门格拉群的时代问题的认识。错误之处,请批评指正。 When studying and describing the flap gill fossils in the southern part of Qinghai and its adjacent areas, the author found that there are a large number of animal fossils in different times in the strata named Tumen Gela Group in Tanggula region, northern Tibet. For this reason, based on the study of the flap gill fossils and the citation of some materials such as ammonite animals and plant fossils, we briefly described the current issue of the so-called Tumen Gela group in the Tangula region. Wrong place, please criticize correction.