Figure 1 in Anatomy, shell morphology, and microstructure of the living fossil Pulvinites exempla (Hedley, 1914) (Mollusca: Bivalvia: Pulvinitidae)

Figure 1. The shell of Pulvinites exempla, major features (lectotype; AMS C.170923, 140 mm). The shells are arranged with the hinge axis orientated horizontally. A, exterior of the right valve (RV). B, exterior of the left valve (LV). C, interior of the LV. D, interior of the RV. E, byssus. arms, anterior (pedobyssal) retractor muscle scar; cf, commarginal folds; cl, calcitic lamellae; cti, impressions of ctenidia; fo, foramen; fog, foramen groove; hl, hinge line; mlg, multivincular ligament; nb, border of nacreouos layer; pams, posterior adductor muscle scar; pmg, prismatic margin; pmi, impressions of pallial retractor muscles; pms, pallial muscle scars; prms, posterior (pedobyssal) retractor muscle scar; su, suture; u, umbo.