Calliotropis undetermined ...
Calliotropis sp. Fig. 2K–L Material examined ITALY – Emilia-Romagna • 1 spec.; Ca’ Piantè; MSF 1076 (W = 23.3 mm). Description Base about 20 mm in diameter, rather flat, basal margin sharp, marked by beaded spiral cord, umbilicus about ¼ of base diameter, bordered by smooth callus; base sculptured b...
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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.10380108 https://zenodo.org/doi/10.5281/zenodo.10380108 |
| Summary: | Calliotropis sp. Fig. 2K–L Material examined ITALY – Emilia-Romagna • 1 spec.; Ca’ Piantè; MSF 1076 (W = 23.3 mm). Description Base about 20 mm in diameter, rather flat, basal margin sharp, marked by beaded spiral cord, umbilicus about ¼ of base diameter, bordered by smooth callus; base sculptured by three beaded spirals, outermost fine with dense nodes, and two equally strong beaded spirals with widely spaced nodes near umbilicus; aperture subcircular, entire. Remarks This fragmentary specimen preserving only the base resembles many fossil and recent species of Calliotropis (i.e., Jansen 1994; Pérez et al. 2022). Calliotropis today is essentially a deep-water genus and most Cenozoic fossil records are also from deep-water strata (Dall 1909; Pérez et al. 2022). Stratigraphic and geographic range Upper Miocene, northern Italy. ... : 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 page 121, DOI: 10.5852/ejt.2023.910.2365, http://zenodo.org/record/10350702 ... |
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