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报道了我国山西北部晚白垩世蜥臀目巨龙科的一种大型恐龙和鸟臀目甲龙科的一种小型恐龙的骨组织结构特征,以及这两种恐龙的骨组织与现代鸟类和现代爬行类的典型骨组织比较研究的结果。通过对两种恐龙的腿骨、肢骨近端部、肋骨、椎骨微观结构的观察,获得了对这些恐龙骨组织基本结构特征的认识。通过对这两种恐龙的腿骨组织与现代爬行类湾鳄(Crocodylusporosus)和非洲鸵鸟(Struthiocamelus)的腿骨组织进行的直观比较和应用计算机图象分析技术及统计方法进行的比较研究,获得如下的结果:(1)两种恐龙的骨组织和现代爬行类的典型骨组织之间有显著差异;(2)两种恐龙的长骨组织具有快速后生生长特点,因而比较接近现代鸟类骨组织的生长模式;(3)两种恐龙、非洲鸵鸟和湾鳄的腿骨组织的血管分布密度有统计学的显著差异,恐龙的骨组织血管密度介于非洲鸵鸟和湾鳄之间。
This paper reports the skeleton structure of a small dinosaur of the Late Cretaceous lizard Hymenosauridae in northern Shanxi, China, A Comparative Study of Typical Bony Tissues in Modern Reptiles. Through the observation of the microstructure of the legs, proximal limbs, ribs and vertebrae of the two dinosaurs, the basic structural features of these dinosaur bones were obtained. Through the visual comparison between the leg tissue of these two dinosaurs and the leg bones of modern Crocodylus porosus and Struthiocamelus and comparative study using computer image analysis and statistical methods, (1) There were significant differences between the two dinosaurs’ bone tissues and the typical bony tissues of modern reptiles; (2) The long bones of both dinosaurs had rapid epigenetic growth characteristics and were therefore closer to that of modern bird bones (3) There were significant differences in the distribution density of blood vessels between the two dinosaurs, the African ostrich and the crocodyles, and the density of the dinosaur bone tissue between the ostrich and the crocodylus.