内蒙古东乌珠穆沁旗西山巴润特花组孢型化石及其时代

本文首次报道内蒙古东乌珠穆沁旗西山下泥盆统巴润特花组底部所发现的丰富的孢型石。共发现孢子１８属，３９种，其中新种２个；凝类４属５种，通过孢型化石的研究，确定巴润特花组为早泥盆世早期，相当西欧吉丁阶，并可与中国云南东部，四川龙门山，西秦岭和新疆西准噶尔同时期孢带比较。

Palynomorphs from Baruntehua Formation at West Hills,East Wuzhumuqin Qi,Inner Mongolia and Their Age

Three sample from the lower part of the Barhntehua Formation at West Hills, EastWuzhumunqi Qi, Inner Mongolia yields a diversified and well preserved palynomorphs, including spores, Acritarchs and Scolecodonts. The spores and Acritarchs under discussion include 18 genera, 39 species and varieties of spores 9 two of which are new Retusotriletes pilatusand Dictykoiriletes ballatus,4 genera and 5 species of Acritarchs. The palynomorphs from lower part of the Baruntehua Formation is most similar to thoseassemblages reported from the Early Devonian of China and Gedinnian of Western Europe and Northern America. Based on palynomorphs data, the palaeogeography and palaeoenvironment are discussed in the paper.