Residual colour patterns in Vetigastropoda and Neritimorpha.

<p>(A-G, I-K) Gastropods from the Oxfordian of Cordebugle (Calvados). (A, B) <i>Ataphrus (Ataphrus) marschmidti</i> Gründel and Kaim, 2006, MNHN.F.J11070 (Cossmann coll.). (A) apertural view. (B) labral view. (C) <i>A</i>. <i>(A</i>.<i>) marschmidti</i>, MNHN.F.J11074 (Cossmann coll.), apical view. (D) <i>A</i>. <i>(A</i>.<i>) marschmidti</i>, UPMC-136 (Le Marchand coll.), apertural view. (E) <i>A</i>. <i>(Endianaulax) sarahae</i> (Chavan, 1954), UPMC-137 (Le Marchand coll.), dorsal view. (F, G) <i>Gerasimovcyclus</i> cf. <i>lorioli</i> (Schmidt, 1905), MNHN.F.J10402 (Cossmann coll.). (F) apertural view. (G) dorsal view. (H) <i>Calliomphalus (Calliomphalus) squamulosus</i> (Lamarck, 1804) from the Lutetian of the Paris Basin showing red fluorescence, MNHN.F.A24999 (Pacaud coll.), dorsal view. (I, J) <i>Neridomus ovula</i> (Buvignier, 1843), MNHN.F.A32286 (de Morgan coll.), dorso-labral view. (I) in natural light. (J) under UV light. (K), <i>Neridomus</i> sp., MNHN.F.A32268 (de Morgan coll.), dorso-labral view. (L, M) <i>Pseudodostia pentastoma</i> (Deshayes, 1864) from the Lutetian of the Paris Basin, MNHN.F.A31564 (Faullummel coll.), labral view. (L) in natural light. (M) under UV light. Scale bars: 5 mm (A, B, C, D, F, G), 2 mm (E, L, M), 10 mm (H, I, J, K).</p>