我国晚白垩世恐龙与现代爬行类及鸟类骨组织的比较研究

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。

HISTOLOGICAL STUDY ON THE LATE CRETACEOUS DINOSAUR'S BONES, AND COMPARISON WITH MODERN REPTILIAN AND AVIAN BONES

The present paper describes the histological aspects of two indvidual skeletons,assigned to species of Ankylosauridae (Ornithischia) and Titanosauridae (Saurichia)respectively, newly discovered from the Late Cretaceous Huiquanpu Formation innorthem Shanxi Province,and reports the results of comparison between the dinosaur's,the modern reptilian and avian limb bones.The observation on the thin sections of dinosaur's limbs, ribs and vertebras hasrevealed their microstructral and histomorphological features. Comparative histologicalstudy on the limb bones of the dinosaurs, the modern crocodile (Crocodylus porosus)and of the ostrich (Struthio camelus) was carried out, and an image analysis on themicrophotographs of the compact bone of these bone samples by using a computersystem was also Performed, and obtained the following results.