Figure 18 in Morphology and phylogenetic significance of the pectoral articular region in elasmobranchs (Chondrichthyes)

Figure 18. Pectoral girdle and fin of Rhinobatos horkelii (MZUSP uncatalogued, female, 468 mm total length). A, left lateral view of scapula depicting pectoral articular region. B, proximal surface of pectoral basals. C, left lateral view of entire scapula. D, frontal view of pectoral girdle. E, rear view of pectoral girdle. F, dorsal view of pectoral girdle. G, ventral view of pectoral girdle. H, ventral view of left pectoral fin. Illustrations not to scale. In A–C and H anterior to left; in F and G anterior to top. Anatomical abbreviations: adf, anterodorsal fenestra; avf, anteroventral fenestra; cor, coracoid bar; dr, distal radial; mes, mesopterygium; mr, medial radial; msc, mesocondyle; mtc, metacondyle; mtp, metapterygium; pc, procondyle; pdf, posterodorsal fenestra; pr, proximal radial; pro, propterygium; pvf, posteroventral fenestra; scp, scapular process; ssc, suprascapula.