FIGURE 2. Confuciusornis dui .
From the following article:
A diapsid skull in a new species of the primitive bird Confuciusornis
Lianhai Hou, Larry D. Martin, Zhonghe Zhou, Alan Feduccia and Fucheng Zhang
Nature 399, 679-682(17 June 1999)
doi:10.1038/21411
a, Reconstruction of the skull. b, Photograph of the skull (IVPP Collection V 11553); the arrow indicates the horny beak. c, Forelimb (IVPP Collection V 11553). d, Hindlimb. e, Photograph of the holotype (IVPP Collection V 11553). f, Reconstruction of the sternum and sternal ribs (based on IVPP Collection V 11521). g, Alular and minor manual digits of C. sanctus . h,Alular and minor manual digits of C. dui . Abbreviations: Ac, alular metacarpal; Ad, alular manual digit; Ar, articular; Den, dentary; Fen, fenestra of the lower jaw; Fem, femur; Fr, frontal; H, humerus; Hb, horny beak; Hy, hyoid bone; J. jugal; La, lacrimal; Mac, major metacarpal; Mic, minor metacarpal; Mid, distal minor manual digit; Mx, maxilla; Na, nasal; Pa, parietal; Po, postorbital; Q, quadrate; Qj, quadratojugal; R, radius; Sl, semilunate bone (fused with major metacarpal); Sq, squamosal; Sr, sternal ribs; St, sternum; Sur, surangular; Tib, tibiotarsus; Tmt, tarsometatarsus; U, ulna.
