Calliostoma Swainson 1840 ...
Calliostoma ? sp. Fig. 4D–F Material examined ITALY – Tuscany • 1 spec.; Le Colline; MSF 1208 (W = 7.3 mm). Description Dome-shaped shell, ca 6 mm high, whorls with slightly convex flanks and indistinct suture, sculpture cancellate with 10 spirals on last whorl, crossed by equally sized and spaced,...
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| Format: | Text |
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Zenodo
2023
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| Online Access: | https://dx.doi.org/10.5281/zenodo.10380138 https://zenodo.org/doi/10.5281/zenodo.10380138 |
| Summary: | Calliostoma ? sp. Fig. 4D–F Material examined ITALY – Tuscany • 1 spec.; Le Colline; MSF 1208 (W = 7.3 mm). Description Dome-shaped shell, ca 6 mm high, whorls with slightly convex flanks and indistinct suture, sculpture cancellate with 10 spirals on last whorl, crossed by equally sized and spaced, oblique and sinuous axial ribs. Remarks The cancellate sculpture and dome-shaped spire of this species are somewhat unusual for Calliostoma, but the specimen is within the morphological range of other Calliostoma species (Quinn 1992; Dornellas & Simone 2013). Shells with similar sculpture and a general dome-like habitus, though with much broader spire, are built by members of the genus Ancistrobasis Dall, 1889 (i.e., Ortega & Gofas 2019; Gofas et al. 2021). The shell resembles certain species of Jujubinus Monterosato, 1884, for example Jujubinus cf. proximus (Millet, 1865) and Jujubinus sceauxensis Landau, Van Dingenen & Ceulemans, 2017, from the Loire Basin in northwestern France (Landau et al. 2017: ... : Published as part of Kiel, Steffen, Sami, Marco & Taviani, Marco, 2023, Mollusks (Gastropoda, Bivalvia) from Miocene cold-seep deposits in northern Italy: revisions and additions, pp. 115-160 in European Journal of Taxonomy 910 on pages 124-125, DOI: 10.5852/ejt.2023.910.2365, http://zenodo.org/record/10350702 ... |
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