贵州晚三叠世关岭鱼龙的原始尾弯对比研究
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True Tailbend Occurred in the Late Triassic: Evidence from Ichthyosaur Skeletons of South China
JI Cheng,JIANG Dayong,HAO Weicheng,SUN Yuanlin,SUN Zuoyu
北京大学学报(自然科学版) . 2011, (2): 209 -314 .