Amaurellina spirata Lamarck, 1804

Caze, Bruno, Merle, Didier, Meur, Mathieu Le, Pacaud, Jean-Michel, Ledon, Daniel & Martin, Jean-Paul Saint, 2011, Taxonomic implications of the residual colour patterns of ampullinid gastropods and their contribution to the discrimination from naticids, Acta Palaeontologica Polonica 56 (2), pp. 329-347 : 339

Amaurellina spirata Lamarck, 1804

Fig. 7A–C .

Stratigraphic and geographic range.—Middle Eocene, Lutetian (PB, Cotentin)

Colour pattern description.—This species shows three levels of residual colouration. The background is heterogeneous with an almost completely dark whorl except the slightly fluorescent shoulder that forms a spiral stripe ( Fig. 7A–C ). The apex is pale ( Fig. 7A–C ). The fluorescent stripe covering the subcarinate shoulder is straight and has a constant width ( Fig. 7A 1 , C). This stripe is sometimes also observable on the penultimate whorl ( Fig. 7C ). The transition between this stripe and the darker colouration of the whorl is diffuse. The base of the whorl can be slightly fluorescent too.

Figures

Fig. 7. Species of the genus Amaurellina Bayle in Fischer, 1840, under UV light. A. Amaurellina spirata (Lamarck, 1804), MNHN A30484 (MNHN coll.), Grignon, Yvelines, France, Lutetian, in dorsal (A1) and apical (A2) views. B. Amaurellina spirata (Lamarck, 1804), MNHN A30884 (Faullummel coll.), Fontenay−en−Vexin, Eure, France, Lutetian, in dorsal view. C. Amaurellina spirata (Lamarck, 1804), MNHN A30485 (MNHN coll.), Grignon, in dorsal view. D. Amaurellina levesquei (d’Orbigny, 1850), MNHN A30879 (Faullummel coll.), Monampteuil, Aisne, France, Ypresian (Cuisian), in dorsal view. E. Amaurellina levesquei (d’Orbigny, 1850), MNHN A30878 (Faullummel coll.), Monampteuil, in dorsal view. F. Amaurellina levesquei (d’Orbigny, 1850), MNHN A30948 (MNHN coll.), Cuise−Lamotte, Oise, France, Ypresian (Cuisian), in dorsal view. G. Amaurellina sinuosa (d’Orbigny, 1850), MNHN A30432 (Faullummel coll.), Saint−Gobain, Aisne, France, Ypresian (Cuisian), in ventral (G1) and dorsal (G2) views. H. Amaurellina sinuosa (d’Orbigny, 1850), MNHN A30431 (Faullummel coll.), Saint−Gobain, in ventral (H1) and dorsal (H2) views. I. Amaurellina sinuosa (d’Orbigny, 1850), MNHN A30887 (Faullummel coll.), Saint−Gobain, in dorsal view. J. Amaurellina paludiniformis (d’Orbigny, 1850), MNHN A30490 (Faullummel coll.), Saint−Gobain, in ventral (J1) and dorsal (J2) views. K. Amaurellina paludiniformis (d’Orbigny, 1850), MNHN A30492 (Faullummel coll.), Saint−Gobain, in dorsal view. L. Amaurellina tuba (Deshayes, 1864), MNHN J02215 (Cossmann coll.), Hermonville, Marne, France, Lutetian, in ventral view. Scale bars 10 mm (A–C), 5 mm (D–L). Photographs by C. Lemzaouda and P. Loubry (MNHN).

Fig. 1. Descriptive terminology of the residual colour patterns of the Ampullinidae. A. Crommium acutum (d’Orbigny, 1850), MNHN B58618 (MNHN coll.), Parnes, Oise, France, Lutetian, in ventral view. B. Globularia (Cernina) fluctuata (Sowerby, 1825), MNHN IM (Staadt coll.), Banggi Island, Kudat division of Sabah, Malaysia, Recent, in dorsal view. C. Ampullina parisiensis (d’Orbigny, 1850), MNHN A30403 (MNHN coll.), Villiers− Saint−Frédéric, Yvelines, France, Lutetian, in dorsal view. D. Globularia (Deshayesia) parisiensis (Raulin, 1844), MNHN A30892 (Cossmann coll.), Morigny (Château de Brunehaut), Essonne, France, Rupelian (Stampian), in dorsal view. E. Ampullina rustica (Deshayes, 1864), MNHN A30414 (Ledon coll.), Douains, Eure, France, Lutetian, in apical view. F. Ampullina intermedia (Deshayes, 1832), MNHN A30416 (MNHN coll.), Cuise−la−Motte, Oise, France, Ypresian (Cuisian), in dorsal view. G. Ampullina intermedia (Deshayes, 1832), MNHN A30417 (MNHN coll.), Cuise−Lamotte, in labral view. Scale bars 10 mm. Photographs by C. Lemzaouda and P. Loubry (MNHN).