Conilithes sceptophorus ( Boettger, 1887 )

Harzhauser, Mathias & Landau, Bernard, 2016, A revision of the Neogene Conidae and Conorbidae (Gastropoda) of the Paratethys Sea, Zootaxa 4210 (1), pp. 1-178 : 53-54

Conilithes sceptophorus ( Boettger, 1887)

Figs 5 I1–I3

Conus (Chelyconus) sceptophorus n. sp. — Boettger 1887: 7, pl. 2, figs 6–8. Conus (Chelyconus) sceptophorus Bttgr. — Boettger 1906: 2.

Type material. Syntype, inventory number SMF XII.2245 a coll. O. Boettger ex M. v. Kimakowicz 1883, Senckenberg Museum, Frankfurt ( Germany) ; Lăpugiu de Sus ( Romania); middle Miocene, Badenian (Langhian).

Studied material. Syntype

Illustrated material. Figs 5 I1–I3: Syntype, SL: 13.5 mm, MD: 6.6 mm, Lăpugiu de Sus ( Romania); picture taken by Sigrid Hof, provided by Ronald Janssen, section Malacology, Senckenberg Forschungsinstitut Frankfurt / Main.

Revised description. Small biconical shell with moderately high scalariform spire. Early spire whorls probably tuberculate; later spire whorls smooth, carinate, weakly concave. Subsutural flexure deep, nearly symmetrical. Last whorl with angulated shoulder; position of maximum diameter slightly below shoulder; faintly ventricose, weakly constricted at base. Siphonal canal short, rather narrow. Few deeply incised spiral grooves on base. Colour pattern consisting of axially arranged zig-zag stripes (according to Boettger 1887; the illustrated syntype shows only vague traces of this pattern).

Shell measurements and ratios. Syntype: SL: 13.5 mm, MD: 6.6 mm, spire angle: µ = 68°, last whorl angle: 44°, LW: 2.05, RD: 0.70, PMD: 0.89, RSH: 0.30.

Discussion. Boettger (1906) emphasised that Conilithes brezinae ( Hoernes & Auinger, 1879) did not occur at Coşteiu de Sus and united all “ brezinae -like” specimens from that locality in his Conus sceptophorus . In the collections of the Natural History Museum Vienna, however, numerous specimens from Coşteiu de Sus undoubtedly represent C. brezinae . In contrast, not a single of these specimens agrees with the syntypes of Conilithes sceptophorus in the stout biconical outline and the zig-zag colour pattern. Whilst one might argue that Boettger’s syntypes are just stout specimens of C. brezinae , the zig-zag colour pattern supports a separation because C. brezinae develops thin spiral lines. For the same reason we reject a synonymization with the Pliocene Italian Conilithes canaliculatus ( Brocchi, 1814) , as proposed by Kovács & Balász (2016), because this species has densely spaced spirals (see Panganelli 2014).

Paleoenvironment. Unknown.

Distribution in Paratethys. Transylvanian Basin: Lăpugiu de Sus ( Romania), Coşteiu de Sus ( Romania) ( Boettger 1887, 1906).

Figures

FIGURE 5 A 1 – A 3. Conilithes allioni (Michelotti, 1847), Kleinebersdorf (Austria), NHMW 1976 / 1785 / 0044. 5 B 1 – B 2. Conilithes eichwaldi nov. nom., Zalisce (Ukraine), ZISP 62085. 5 C 1 – C 2. Conilithes eichwaldi nov. nom., Zalisce (Ukraine), ZISP 62085. 5 D 1 – D 3. Conilithes brezinae (Hoernes & Auinger, 1879), Steinebrunn (Austria), NHMW 1999 z 0077 / 0023 a, syntype. 5 E 1 – E 3. Conilithes brezinae (Hoernes & Auinger, 1879), Steinebrunn (Austria), NHMW 1999 z 0077 / 0023 b, syntype. 5 F 1 – F 3. Conilithes brezinae (Hoernes & Auinger, 1879), Steinebrunn (Austria), NHMW 1999 z 0077 / 0023 c, syntype. 5 G 1 – G 3. Conilithes brezinae (Hoernes & Auinger, 1879), Gainfarn or Enzesfeld (Austria), NHMW 1846 / 0037 / 0039. 5 H 1. Conilithes brezinae (Hoernes & Auinger, 1879), Gainfarn or Enzesfeld (Austria), NHMW 1846 / 0037 / 0039. 5 I 1 – I 3. Conilithes sceptophorus (Boettger, 1887), Lăpugiu de Sus (Romania), SMF XII. 2245 a, syntype. 5 J 1 – J 3. Conilithes antidiluvianus (Bruguière, 1792), Baden (Austria), NHMW 1869 / 0001 / 0161. 5 K 1. Conilithes antidiluvianus (Bruguière, 1792), Möllersdorf (Austria), NHMW 1869 / 0001 / 0247.