义县组上部一件无齿翼龙超科前肢及对金刚山义县翼龙的修订

蒋顺兴, 张鑫俊, 程心, 汪筱林

A new pteranodontoid pterosaur forelimb from the upper Yixian Formation, with a revision of Yixianopterus jingangshanensis

JIANG Shun-Xing, ZHANG Xin-Jun, CHENG Xin, WANG Xiao-Lin

Fig. 2 Close-up of IVPP V 26166 from the upper Yixian Formation A. The right humerus in medial view; B. The carpal region in ventral view; C. The first metacarpal and manual digit in ventral view; D. metacarpals II-IV Abbreviations: atu. anterior tubercle; dpc. deltopectoral crest; fo. foramen; ftp. flexor tendon process; h. head; tub. tuberculum; us. ungual sheath; vcd. ventral condyle; and the others see the caption of Fig. 1