蒙古晚白垩世母驼龙（Ingenia, Barsbold 1981）化石新材料及窃蛋龙类的系统发育分析

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	蒙古晚白垩世母驼龙（Ingenia, Barsbold 1981）化石新材料及窃蛋龙类的系统发育分析
	吕君昌
学位类型	硕士
导师	董枝明
	1999
学位授予单位	中国科学院古脊椎动物与古人类研究所
学位授予地点	中国科学院古脊椎动物与古人类研究所
学位专业	古生物学与地层学
关键词	纳摩盖吐盆地蒙古南戈壁纳摩盖吐组晚白垩世晚期窃蛋龙次亚目母驼龙科
摘要	基于在蒙古南戈壁晚白垩世晚期纳摩盖吐组（马斯特里赫特期的中期），发现一完整的母驼龙（Ingenia yanshini Barsbold, 1981）头骨和部分头后骨骼，补充和修订了母驼龙(Ingenia)的鉴定特征：头骨具有发育的嵴，该嵴由前上颌骨的鼻骨突和鼻骨构成，嵴的前边缘近于真立；构成嵴的前上颌骨的鼻骨突在嵴的背部只暴露很小部分；沿头骨的长轴方向上，额骨的长度约为顶骨的1／4；下颌愈合部高度气腔化；颈椎数目为13个，颈椎体具有1或2个椎体侧孔；荐椎数目为7或8个；第一指长而粗状，第二和第三指较细而短，倒数第二指节明显要比前面的指节短，第二和第三指的爪短，具有屈肌结节，稍弯曲，没有“唇突”；肠骨较矮，背边缘较平直，其前突和后突的高度接近，后突斜载成平面状，两肠骨上缘之间的距离很近。对窃蛋龙各属之间的系统发育分析表明Ingenia与Oviraptor之间的亲缘关系最后，而与其它属的关系较远。
其他摘要	Diagnosis of Ingenia yanshini, Barsbold 1981 is revised on the basis of new material collected from the late Late Cretaceous (mid-Maastrichtian), Nemegt Formation of Southwestern Mongolia. This species is characterized by: the skull with a developed crest, which is formed by the nasal process of the premaxilla and the nasals; the anterior margin of the crest is nearly vertical; the nasal process of the premaxilla is less exposed on the dorsal surface of the crest; along the midline of the skull, the antero-posterior length of the frontal is close to a quarter of that of parientals in dorsal view; the symphysis of the lower jaw is highly pneumatilized; there are 13 cervicals, each has 1 or 2 pleurocoels; the sacrum consists of 7 or 8 vertebrae; the first digit is elongate and strong, digit II and digit III are much shorter and more slender; the penultimate phalanges are shorter than the proximal ones, the unguals of digits II and III are short and slightly curved, with small flexor tubercles, but no "lips"; the illium is shallow, with a straight dorsal margin, the depth of the preacetabular process is similar to that of the postacetabular process, the postacetabular process is truncated, the two ilia are close to each other in dorsal view, although this might be exaggerated slightly. The phylogenetic analysis among the genera of the Oviraptorosauria indicates that the Ingenia is closer to Oviraptor than to the other genera.
页数	47
语种	中文
文献类型	学位论文
条目标识符	http://119.78.100.205/handle/311034/1738
专题	硕博论文
推荐引用方式 GB/T 7714	吕君昌. 蒙古晚白垩世母驼龙（Ingenia, Barsbold 1981）化石新材料及窃蛋龙类的系统发育分析[D]. 中国科学院古脊椎动物与古人类研究所. 中国科学院古脊椎动物与古人类研究所,1999.

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