FIGURE 51 in Morphological and taxonomic revision of species of Squatina from the Southwestern Atlantic Ocean (Chondrichthyes: Squatiniformes: Squatinidae)

FIGURE 51. Morphology of cephalic muscular system in Squatina species. A) Ventral view of mandibular and hyoidean muscles (based on NUPEC 1227, juvenile male, 569 mm TL). B) Dorsal view of cranial and hyoidean muscles (based on NUPEC 1227). C) Ventral view of hyoidean and hypobranchial muscles, after removing the muscles represented in (A) (based on MZUSP 110870, juvenile female, 449 mm TL). Anterior to top. Abbreviations: adm, adductor mandibulae; ams, adductor mandibulae superficialis; chd, constrictor hyoideus dorsalis; chv, constrictor hyoideus ventralis; co, coracoid bar; coa, coracoarcualis; cob1, coraco-branchialis 1; coh, coraco-hyoideus; ihy, inter-hyoideus; imd, intermandibularis; lpq, levator palatoquadrati; spl, spiracularis.