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一、前言内蒙古西乌珠穆沁旗(下简称西乌旗)地区下二叠统的腕足类化石资料1978年曾著文记述过,本文是该地区下二叠统的 Spiriferella 部份。所记述标本均采于1977年。西乌旗地区下二叠统的 Spiriferella 虽然种数不多,但其个体数量比较丰富。文中描述了 Spiriferella 属的5个种(包括1个新种)和一个新属 Spiriferelloides.内蒙古区调队马秀、周俊昌等同志曾热情提供资料,杨遵义教授、詹立培副研究员审阅并修改文稿,沈阳地质矿产研究所刘文山、任传贤摄制图片,笔者表示衷心感谢。
I. INTRODUCTION The data of the Lower Permian brachiopod fossils from the West Ujumqin Banner (Xixuqi) area of Inner Mongolia have been described in 1978, which is the part of Spiriferella of the Lower Permian in this area. The specimens described were collected in 1977. Spiriferella of the Lower Permian in the Western Wuqi area, although not many in number, has a relatively large number of individuals. The article describes five species (including one new species) of Spiriferella and a new genus, Spiriferelloides. Inner Mongolia Autonomous Region delegation Ma Weixiu and Zhou Junchang enthusiastically provided information. Professor Yang Zunyi and Zhan Lipei, associate researchers reviewed and revised the manuscript, Shenyang Institute of Geology and Mineral Liu Wenshan, Ren Chuan-Yin filming, I express my heartfelt thanks.