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. 1 Photo (A) and line drawing (B) of IVPP V 26166 from the upper Yixian Formation Two circles show the regions using the method of micro-CL, and two arrows show the different layers exposed in this specimen Abbreviations: dca. distal syncarpal; hu. humerus; mc I-IV. metacarpal I-IV; pac. preaxial carpal; pca. proximal syncarpal; pf. pneumatic foramen; ph1-2d1. first or second phalanx of manual digit I; ph1d4. first phalanx of manual digit IV; ptd. pteroid; ra. radius; se A. sesamoid A; se C. sesamoid C; ul. ulna