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通过对前人建议的26个生物地层标志化石存在与否的简约分析,中亚与亚洲中部晚白垩世的陆生脊椎动物组合的相对层位得到了更清楚的揭示。此区最古老的组合是乌兹别克斯坦克孜勒库姆沙漠的Khodzhakul组合(早塞诺曼期),其次为蒙古戈壁沙漠东部BaynShire组的下部和上部的组合(塞诺曼期至桑顿期)。中国内蒙古二连达布苏动物群与中亚的土伦期—桑顿期动物群属于同一类群,因为它们均具龟鳖类Khunnuchelys,前者时代可能为桑顿期。三个中亚的组合(Bissekty、Yalovach和Bostobe组合)中有两个地方性的鳄形类(Kansajsuchus和Tadzhikosuchus)和一个出现于戈壁沙漠的鳄形类(Shamosuchus)化石。戈壁沙漠的坎潘期至马斯特里赫特期组合与北美同期动物群为同一类群。Djadokhta组与BarunGoyot组的坎潘期脊椎动物组合具有高度的地方性,并反应了半干旱的古环境。产自Nemegt组的组合生存于比较潮湿的环境。在组成上,这一组合与其他河流相沉积环境(Bissekty、二连达布苏以及北美Judithian期和Lancian期的组合)相似。具顶饰的鸭嘴龙Saurolophus的存在,支持了Nemegt组合为马斯特里赫特期时代。戈壁沙漠的这三个组合(Djadokhta、Barun Goyot和Nemegt组合)被归为一类,因为它们共同拥有地方性的龟类Mongolemys和兽脚亚目的小驰龙类。亚洲中部和北美的坎潘期至马斯特里赫特期组合与亚洲更加古老的组合不同在于存有暴龙科、肿头龙亚目和鸭嘴龙科。在中亚,由于地区性的海侵,这一时间段内的陆生脊椎动物组合多不清楚。
Based on the simple analysis of the existence of 26 biostratigraphic marker fossils previously proposed, the relative horizon of the Late Cretaceous terrestrial vertebrate assemblage in Central Asia and Central Asia is more clearly revealed. The oldest assemblage in this area is the Khodzhakul assemblage of the Kyzylkum Desert in Uzbekistan (early Norman period) followed by the combination of the lower and upper parts of the BaynShire Formation in the eastern part of the Gobi Desert in Mongolia (the Seneca-Thornton period) . The Erdostau fauna in Inner Mongolia, China, belongs to the same group as the Toulon-Thorntonian fauna in Central Asia because they both have the Khunnuchelys, the former age may be the Sandtonian period. There are two endemic crocodiles (Kansajsuchus and Tadzhikosuchus) and one Shamosuchus fossil in the Gobi Desert in the three Central Asian combinations (Bissekty, Yalovach and Bostobe). The Campanian-Maastricht combination in the Gobi Desert is the same group of North American synchronized fauna. The combination of the Djadokhta group with the Campanian vertebrate of the BarunGoyot group is highly endemic and reflects a semi-arid paleoenvironment. The combination from the Nemegt group survives in a relatively humid environment. Compositionally, this assemblage is similar to other fluvial depositional settings (Bissekty, Erdoscombe, and the North American Judithian and Lancian phases). The presence of the crested duck-billed dinosaur Saurolophus, supported the Nemegt combination for the Maastricht age. These three combinations of the Gobi Desert (Djadokhta, Barun Goyot, and Nemegt) are grouped together because they both share the endemic turtle Mongolemys and the small chimps of theropod. The Campanian-Maastricht combination in central Asia and North America differs from the older combination in Asia in the presence of Tyrannosaurus, Cyclopia and Drosophila. In Central Asia, the terrestrial vertebrate assemblage during this time period is not clear as a result of regional transgressions.