A New Juvenile Specimen of Lufengosaurus Huenei Young, 1941 (Dinosauria: Prosauropoda) from the Lower Jurassic Lower Lufeng Formation of Yunnan, Southwest China     

SEKIYA Toru  and DONG Zhiming 《《地质学报》英文版》2010,84(1):11-21

Abstract: A skull and a series of associated cervical vertebrae (ZLJ0112) discovered from the Lower Lufeng Formation (Lower Jurassic) are determined as a juvenile specimen of Lufengosaurus huenei Young 1941 based on amended autapomorphies. Differences between ZLJ0112 and the holotype (sub-adult specimen) are considered as ontogenetic characteristic changes of L. huenei. Since some of these differences are present in other prosauropod dinosaurs (i.e., forms of the maxillary vascular foramen are irregular; the frontal contribution to the dorsal margin of the orbit is substantial; the frontal contribution to the supratemporal fossa is absent; the supratemporal fenestra is visible in lateral view; the supraoccipital inclined at 75 degrees; the parasphenoid rostrum lies level with the occipital condyle; the retroarticular process is short; the axial postzygapophysis project caudally beyond the end of the centrum) they may be common ontogenetic changes in prosauropod dinosaurs.  相似文献   

中国的方解石矿物晶体--一个有希望的新市场     

RockH.Currier邢旭东  郑普红胡能勇 《国土资源导刊(湖南)》2004,1(3):58-60

在过去十年间,各式各样的中国方解石标本出现在国际矿物市场。由于中西方之间的语言障碍,或是一些经销商不愿精确地标出标本产地,导致收藏家们和经销商们普遍地对中国矿物标本产地混淆不清。  相似文献