首页|短吻贫齿龙(双孔亚纲:海龙目)的新材料及补充研究

短吻贫齿龙(双孔亚纲:海龙目)的新材料及补充研究

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记述了产自贵州关岭法郎组瓦窑段(上三叠统)短吻贫齿龙一新材料.新标本头后骨骼十分完整,使我们对该海龙的全身骨骼形态有了一个完整的认识,尤其是澄清了其肩带及前、后肢的解剖学特征.短吻贫齿龙牙齿稀少且局限于上、下颌的前端,以及末端指/趾骨(爪)扁平等性状表明,该种不是纯粹的肉食动物.依据新材料,短吻贫齿龙在局部形态上存在个体变异,并确认后肢趾趾式(2-3-4-5-5)可作为该海龙的特征之一.
A NEW SKELETON OF MIODENTOSAURUS BREVIS(DIAPSIDA:THALATTOSAURIA)WITH A FURTHER STUDY OF THE TAXON
A new thaiattosaurian skeleton from the Upper Triassic Wayao Member of the Falang Formation.Guanling area,Guizhou Province,China cab be referred to Miodentosaurus brevis.The postcranial skeleton of the specimen is well-preserved and SO complete that it is worthy to be described.This new specimen provides a full knowledge of the osteology of the thalattosaurian,especially the anatomy of the pectoral girdle and both the fore-and hind.limbs.The presence of a few teeth restricted to the anterior ends of both the upper and lower jaws and dorsoventrally flattened ungual phalanges indicate that M. brevis is not a pure carnivore .With new information ,some individual variations are recognized and the digital formula(2-3-4-5-5)of the pes call be identified a8 one of the diagnostic features for the thalattosaurian.

ThalattosauriaMiodentosaurusskeletonindividual variation

赵丽君、佐藤环、刘俊、李淳、吴肖春

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浙江自然博物馆 杭州 310012

日本东京学艺大学,东京,184-8501

中国科学院古脊椎动物与古人类研究所,北京,100044

加拿大自然博物馆,渥太华,ON K1P 6P4

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海龙目 贫齿龙 骨架 个体变异

中国科学院、国家外国专家局创新团队国际合作伙伴计划grants(RS 34)of Canadian Museum of NatureCAS/SAFEA International Partnership Program fo

NNSFC40772015

2010

古脊椎动物学报
中国科学院古脊椎动物与古人类研究所

古脊椎动物学报

CSTPCDCSCD北大核心
影响因子:0.404
ISSN:1000-3118
年,卷(期):2010.48(1)
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