Chiloscyllium punctatum, male: Different views of the heart of the dissected specimen: A heart lying on the apron of the shoulder girdle ventral, B ventral, C sagittal cut and D lateral views of the dissected specimen. Abbreviations: 1–5, individual branchial arteries 1–5; aba afferent branchial arteries; at, atrium; ca, conus arteriosus; com, compacta; cov, conus valves; es, esophagus; lc, labial cartilage; lu, lumen; mc, Meckels ba, mc,Meckel’s cartilage; pec, pectoral fin; pq, palatoquadratum; sp, spongiosa; ssc, suprascapula; sv, sinus venosus; va, ventral aorta, vc, vetrebtal column, ve, ventricle.