Figure 12 in The biology and functional morphology of the high-energy beach dwelling Paphies elongata (Bivalvia: Mactroidea: Mesodesmatidae). Convergence with the surf clams (Donax: Tellinoidea: Donacidae)

Figure 12. Paphies elongata. The ciliary currents of the visceral mass as seen from the left side. AA (1), anterior adductor muscle(1); AA(2), anterior adductor muscle(2); APR, anterior pedal retractor muscle; DEF, dorsal extension of the foot; F, foot; HF, heel of the foot; PA, posterior adductor muscle; PPR, posterior pedal retractor muscle; PR, prodissoconch; PS, pallial sinus; VM, visceral mass.