论文部分内容阅读
和政动物群是指我国甘肃省和政地区发现的新生代古生物化石所代表的动物群。和政县位于兰州市南偏西约100千米处,行政上属于甘肃省临夏回族自治州。在地质学和古生物学上常常把发现在同一地方、同一时代的各种古生物化石组合统称为一个动物群,并经常以发现地或其代表动物命名。比如,著名的热河动物群就是发现于辽宁西部及华北地区白垩纪早期的一个古动物群,其中包括中华龙鸟等带羽毛的恐龙、孔子鸟等中生代鸟类以及哺乳动物和两栖动物等。后来,科学家在该地区的相同地层中还发现了大量植物化石,包括被人们称为第一朵花的“辽宁古果”等被子植物化石,于是科学家将热河动物群更名为热河生物群,即包括动物群和植物群的生物群。另外,三叠纪晚期的关岭生物群和中新世的山旺动物群等也是如此命名的。
The political group refers to the fauna represented by the Cenozoic paleontological fossils found in the Hezheng area, Gansu Province. Hezheng County is located 100 kilometers south west of Lanzhou City and belongs to Linxia Hui Autonomous Prefecture of Gansu Province administratively. Geology and paleontology often found in the same place, the same era all kinds of paleontology fossil assemblage collectively referred to as a fauna, and often found in or on behalf of animals. For example, the famous Jehol fauna is an ancient fauna found in the early Cretaceous in western Liaoning and northern China. Among them, there are dinosaurs with Chinese dragon and bird, Mesozoic birds such as Confucius, and mammals and amphibians. Later, scientists also found a large number of plant fossils in the same strata in the area, including the “Liaoning ancient fruit” and other angiosperm fossils known as the first flower. As a result, scientists renamed the Jehol fauna as Jehol Biota, that is, flora that includes fauna and flora. In addition, the Late Triassic Guanling biota and the Miocene Shan Wang fauna are so named.