Fig. 4
From: Evolution of the facial musculature in basal ray-finned fishes
Cranial musculoskeletal system of Polyodon spathula, VIMS 12227; right lateral view (horizontally flipped) of partially dissected specimen stained for muscle dissection. Abbreviations: AM, adductor mandibulae; CHD, constrictor hyoideus dorsalis; CMD, constrictor mandibularis dorsalis