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Figure 8


Fig. 8. Dissection of Polypterus in lateral and ventral views, showing many of the muscles that act during the expansive and compressive phases of feeding. Expansive phase muscles are shown in pink, while compressive phase muscles are shown in blue. The position of the frontoparietal (FP) suture is indicated by the green arrow. Modified from Lauder (Lauder, 1980), with permission of the author. AMp, adductor mandibulae pterygoideus; AMt, adductor mandibulae temporalis; LAP, levator arcus palatini; AM2, adductor mandibulae, division 2; DO, dilator operculi; AOP, adductor operculi; EP, epaxialis; IH, interhyoideus; SH, sternohyoideus; BM, branchiomandibularis; IMp, intermandibularis posterior.