Conus schroeckingeri (Hoernes & Auinger,
1879)
Descrizione e caratteristiche:
Small pyriform shell with low conical to coeloconoid spire; early spire whorls angulated, tuberculate; later whorls flat, striate. Subsutural flexure very shallow, weakly curved, moderately asymmetrical. Suture impressed. Last whorl faintly angulated and convex below; constricted. Lower third of last whorl and base covered by wide-spaced, raised spiral cords. Moderately long, weakly reflected siphonal canal. Siphonal fasciole very weak. Aperture narrowing adapically and widening towards siphonal canal. Colour pattern under UV light consisting of regularly spaced, thin spirals on entire last whorl, coinciding with spiral cords on base. Spirals overlain by large, roughly trigonal blotches amalgamating into two irregular bands below shoulder and below midwhorl (2).
Although known by just two specimens, this seems to be
a distinct species. None of the other Paratethyan cone species develops such a
stout pyriform shape with striate spire whorls and raised spiral cords on the
base. This sculpture of wide-spaced, prominent spiral cords on the last whorl
is reminiscent of Conus sturi (Hoernes & Auinger, 1879)
but the strongly constricted base and the low conical coeloconoid spire exclude
that P. schroeckingeri is just a juvenile C. sturi. Further, the colour pattern of delicate spirals
overlain by large blotches is unknown from any other Paratethyan species (2).
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Conus schroeckingeri (1) |
Conus schroeckingeri (2) Lăpugiu de Sus
(Romania) NHMW 1854/0035/0040,
holotype mm.
23,7 x 13,8 |
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Conus schroeckingeri mm. 15,9 x 9,4 Letkes – Ungheria Badeniano [AZFC 533-01] |
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Conus schroeckingeri mm. 17,6 x 10,9 Letkes – Ungheria Badeniano [AZFC 533-02] |
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Conus schroeckingeri (2) Lăpugiu
de Sus (Romania) NHMW
1854/0035/0040, holotype mm.
23,7 x 13,8 |
Conus schroeckingerimm. 17,6 x 10,9 Letkes – Ungheria Badeniano [AZFC 533-02] |
Conus schroeckingeri mm. 15,9 x 9,4 Letkes – Ungheria Badeniano [AZFC 533-01] |
Bibliografia Consultata