川西,藏东晚三叠世有孔虫及海参骨片

金沙江上游两岸为川西、藏东地区。此区的四川省白玉县、西藏贡觉县及江达县的晚三叠世诺利期沉积中发现了有孔虫１８属２１种，海参骨片５属８种。三叠纪海参在中国为首次报道：白玉县及贡觉县的三叠世有孔虫也为首次发现。这一动物群在区域地质史及古地理研究上具有一定意义。

LATE TRIASSIC FORAMINIFERA AND HOLOTHURIAN SCLERITES FROM WESTERN SICHUAN AND EASTERN XIZANG (TIBET)

Twenty one species belonging to eighteen genera of foraminifera and eight species in five genera of holothurian sclerites have been discovered from the Late Triassic Norian sediments in Baiyu County of western Sichuan Province and Gonjo and Jomda Counties of eastern Xizang along the upper reaches of the Jinshajiang River in Western China.It is the first discovery of Triassic holothurian sclerites in China and of abundant Triassic foraminiferal fauna in western Sichuan and eastern Xizang.The foraminifera are closely related to the Late Triassic ones from Yunnan and northwestern Sichuan. Many of them are common in Triassic strata in India and Tethys areas of Europe. The holthurian sclerites are mostly Middle and Late Triassic species of Europe.