Figure 1
(A–D) Shells of adult specimens (adapted from19,20). (A) Cleopatra johnstoni, (B) Bridouxia grandidieriana, (C) Spekia zonata, (D) Lavigeria grandis. (E–J) SEM images of the working zone from adult specimens of (E–F) C. johnstoni, (G–H) B. grandidieriana, (I) S. zonata, and (J) L. grandis (G and J adapted from19,20). Ct = central tooth, Lt = lateral tooth, Mt I = marginal tooth I (inner marginal tooth), Mt II = marginal tooth II (outer marginal tooth), TB = tooth basis, Tc = tooth cusp, Td = tooth denticles, Ts = tooth stylus. Scale bars: A–B = 5 mm, C = 10 mm, F = 20 mm, E, J = 200 µm, F = 60 µm, G = 20 µm, H = 8 µm, I = 100 µm.
