Figure 7. Paphies elongata. A 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 7. Paphies elongata. A transverse section through the right ventral mantle margin of the pedal gape. IMF(1), inner mantle fold (inner component); IMF(2), inner mantle fold (outer component); MMF, middle mantle fold; OMF, outer mantle fold; P, periostracum; PN, pallial nerve; PRM, pallial retractor muscle; RT, rejectory tract.