Abstract: The present paper describes the histological aspects of two individual skeletons, assigned to species of Ankylosauridae (Ornithischia) and Titanosauridae (Saurichia) respecüvely, newly discovered from the Late Cretaceous Huiquanpu For-nation in northern Shanxi Province, and reports the results of comparison between the dinosaur's, the modem reptilian and avian limb bones. The observation on the thin sections of dinosaur's limbs, ribs and vertebras has revealed their microstructral and histomorphological features. Comparative histological study 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 the microphotographs of the compact bone of these bone samples by using a computer system was also performed, and obtained the following results.

摘要： 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(Crocodylus porosus)和非洲鸵鸟(Struthio camelus)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