内蒙古热河生物群化石分布特征及其古气候、古环境意义

热河生物群是分布于亚洲东部早白垩世的著名古生物化石群,地质时代距今120~131 Ma. 早期研究认为,热河生物群主要分布于中国冀北、辽西等地区. 直到20世纪80年代内蒙古地区开展专题区域地质研究,才陆续发现了许多新的热河生物群化石分布区域和重要的化石产地. 通过对内蒙古自治区东、西部白垩纪热河生物群分布特征及地层对比研究,明确了内蒙古热河生物群分布区域、产出层位、组合差异及古气候和古环境演变规律,进一步理清了内蒙古地区白垩纪沉积古地理、古气候和古环境演变与热河生物群辐射演化的制约和协同关系.

FOSSIL DISTRIBUTION OF JEHOL BIOTA IN INNER MONGOLIA: Paleoclimate and Paleoenvironment Implication

The Jehol Biota is a well-known Early Cretaceous paleontological fossil group distributed in eastern Asia, with a geological age of 120-131 Ma. Early studies suggested that Jehol Biota was mainly distributed in northern Hebei and western Liaoning of China. It was not until the special regional geological research was carried out in the 1980s in Inner Mongolia that many new fossil distribution areas and important fossil sites of Jehol Biota were discovered. The distribution areas, occurrence layers, assemblage differences and evolution rules of paleoclimate and paleoenvironment of Jehol Biota in Inner Mongolia are defined, and the restriction and synergic relationship between the evolution of Cretaceous sedimentary paleogeography, paleoclimate and paleoenvironment and the radiation evolution of Jehol Biota in Inner Mongolia are further clarified through the study on the fossil distribution characteristics and stratigraphic correlation of Cretaceous Jehol Biota in eastern and western Inner Mongolia.