Figure 4 in Lucinidae (Bivalvia) - the most diverse group of chemosymbiotic molluscs

Figure 4. General anatomy of Anodontia philippiana, Dampier, Western Australia, with left valve and mantle removed. Abbreviations: aa, anterior adductor muscle; exa, exhalant aperture; f, foot; fm, fused mantle; ld, left demibranch of ctenidia; me, mantle edge; mg, mantle gills on septum; p, periostracum; pa, posterior adductor muscle. Shell length = 40 mm