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地质学报  2010 

内蒙古乌拉特中旗恐龙足迹研究

, PP. 723-742

Keywords: 恐龙足迹早侏罗世乌拉特中旗内蒙古

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Abstract:

2006年内蒙古地质环境监测院在乌拉特中旗海流图镇西10公里处发现一恐龙足迹化石点。由于恐龙足迹产地的地层研究程度较低,因此这批恐龙足迹的研究在地层年代确定、以及恢复古环境方面具有重大意义。共识别出脊椎动物足迹化石119个,其中大部分为恐龙足迹,包括兽脚类恐龙足迹:玫瑰实雷龙足迹(Eubrontesglenrosensis)、海流图卡岩塔足迹(Kayentapushailiutuensisichnosp.nov)和鸟脚类恐龙足迹中型异样龙足迹种Anomoepusintermedius,以及鳄类足迹的蛙步足迹,其中海流图卡岩塔足迹(Kayentapushailiutuensisichnosp.nov)为新种。根据足迹形态的对比,推断造迹恐龙分别为兽脚类恐龙中的巨齿龙类(Megalosaurus)和双脊龙类(Dilophosaurus)以及鸟脚类恐龙棱齿龙类(Hypsilophodont)。通过对比发现乌拉特波兰Opatów附近的Podole地区发现的早侏罗世的足迹组合十分相似,因此建议将乌拉特中旗海流图的足迹及含足迹地层的年代归入侏罗纪早期。根据对足迹产地附近的地层剖面的研究以及足迹组合中含大量鸟脚类恐龙足迹的事实推断:侏罗纪早期研究区古环境为山涧河流环境,雨量充沛。

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