Figure 33 in Morphology and phylogenetic significance of the pectoral articular region in elasmobranchs (Chondrichthyes)

Figure 33. Pectoral girdle and fin of Squalus acanthias (HUMZ 30291, male, 575 mm total length). A, left lateral view of base of scapula depicting pectoral articular region. B, proximal surface of pectoral basals. C, rear view of pectoral girdle. D, ventral view of left pectoral fin. Illustrations not to scale. In A anterior to left; in B anterior to right; in D anterior to top. Anatomical abbreviations: cor, coracoid bar; df, diazonal foramen; dr, distal radial; fpr, facet for propterygium; mes, mesopterygium; mr, medial radial; msc, mesocondyle; mtp, metapterygium; pr, proximal radial; pro, propterygium; ptp, posterior triangular process of coracoid bar; scl, scapula; scp, scapular process.