Conus (Lautoconus), 1923

Psarras, Christos, Merle, Didier & Koskeridou, Efterpi, 2022, Late Miocene Conidae (Mollusca: Gastropoda) of Crete (Greece). Part 2, European Journal of Taxonomy 816, pp. 1-70 : 14-15

Conus (Lautoconus) sp. 1

Figs 6 , 20 , 40C ; Table 3

Material examined

GREECE – Crete • 1 spec.; 1990; Action spécifique du Muséum project (1989–1990) exped.; MNHN.F. A82982 .

Shell description

Medium-sized shell (SL: 35 mm, base broken) with low conical spire. Spire whorl outline conical. Early spire whorls conical, worn out. Later spire whorls conical, straight, slightly convex. Shoulder smooth, with maximum diameter below shoulder. Suture channeled. Subsutural flexure very shallow, very weakly curved, nearly symmetrical ( Fig. 40C ).

Description of colour pattern

The colour pattern consists of closely related, delicate, elongated, wavy spiral rows of dashes. On the spires, the pattern consists of very thin axial flammulae, closely related to each other. The flammulae are vaguely connected with a spiral band, at the center of the sutural ramp.

Remarks

This species is very similar in morphology ( Table 3) to Conus (Lautoconus) ictini sp. nov. It differs in the wider shoulder and the relatively lower conical spire outline. It can also be distinguished by its relatively shallower subsutural flexure relative depth (SSFd = 4.88 in Conus (Lautoconus) ictini sp. nov.). Moreover, it displays a very different colour pattern from the brick-like pattern of Conus (Lautoconus) ictini sp. nov. ( Fig. 6 ). Another species with a similar colour pattern on the last whorl is Conus (Leporiconus) suessi Hoernes & Auinger, 1879 (see Harzhauser & Landau 2016), but Conus (Lautoconus) sp. 1 does not possess striate spire whorls. Therefore, it does not match the description of Conus (Leporiconus) suessi .

Stratigraphic range

Upper Tortonian Crete, Greece.

Figures

Fig. 6. Conus (Lautoconus) sp. 1 from the Tortonian of Crete (Greece), specimen MNHN.F.A82982, in abapertural and apical views, under natural (A2) and UV light. Scale bar = 1 cm.

Fig. 20. PCA graph with nine species of Conus (Lautoconus) found in late Miocene localities of Crete (Greece). Conus (Lautoconus) sp. 1 is broken and cannot be included in the graph. Yellow dots = Conus (Lautoconus) eschewegi (Pereira da Costa, 1866); grey dots = Conus (Lautoconus) ictini sp. nov.; red dots = Conus (Lautoconus) sp. 2; blue dot = Conus (Lautoconus) sp. 3; black dot = Conus (Lautoconus) lauriatragei sp. nov.; brown dots = Conus (Lautoconus) damianakisi sp. nov.; purple dot = Conus (Lautoconus) cf. baldichieri Borson, 1820; green dots = Conus (Lautoconus) sp. 4; light blue dot = Conus (Lautoconus) sp. 5. Abbreviations: LW = length width ratio; PMD = position of maximum diameter; RD = relative diameter; RSH = relative height of spire.

Fig. 40. Examples of subsutural flexures. A. Conus (Lautoconus) eschewegi Pereira da Costa, 1866 (MNHN.F.A82976). B. Conus (Lautoconus) ictini sp. nov. (AMPG(IV) 3719). C. Conus (Lautoconus) sp. 1 (MNHN.F.A82982). D. Conus (Lautoconus) sp. 2 (AMPG(IV) 3756). E. Conus (Lautoconus) sp. 3 (MNHN.F.A83012). F. Conus (Lautoconus) cf. baldichieri Borson, 1820 (MNHN.F.A83013). G. Conus (Lautoconus) lauriatragei sp. nov. (MNHN.F.A83014). H. Conus (Lautoconus) damianakisi sp. nov. (AMPG(IV) 3802). I. Conus (Lautoconus) sp. 4 (MNHN.F.A83015). J. Conus (Lautoconus) sp. 5 (AMPG(IV) 3861). K. Conus (Stephanoconus) cf. taurinensis Bellardi & Michelotti, 1841 (AMPG(IV) 3808). L. Conus (Stephanoconus) moissettei sp. nov. (MNHN.F.A83071). M. Conus davolii sp. nov. (MNHN.F.A83091). N. Conus fuscocingulatus Hörnes, 1851 (AMPG(IV) 3858). O. Conus (Plagioconus) elatus Michelotti, 1847 (AMPG(IV) 3862). P. Conus (Plagioconus) sp. (AMPG(IV) 3890). Q. Conus (Plagioconus) sp. (AMPG(IV) 3898). R. Conus (Plagioconus) aquensis d’Orbigny, 1852 (AMPG(IV) 3907). Not to scale.