Wareniconcha Cosel & Olu 2009
Wareniconcha ? sp. Fig. 12I–J Material examined ITALY – Emilia-Romagna • 1 spec.; Castel di Casio; MGGC 22329 (L = 31.0, H = 26.8, W = 15.8 mm). Description Shell outline roundish-oval, umbo elevated, blunt; anterior margin acutely rounded, ventral margin convex; anterior adductor muscle scar elonga...
| Main Authors: | , , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
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Zenodo
2023
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| Online Access: | https://doi.org/10.5281/zenodo.10380354 http://treatment.plazi.org/id/C80687AB9C34FFE5FD3EF907FB216CFB |
| Summary: | Wareniconcha ? sp. Fig. 12I–J Material examined ITALY – Emilia-Romagna • 1 spec.; Castel di Casio; MGGC 22329 (L = 31.0, H = 26.8, W = 15.8 mm). Description Shell outline roundish-oval, umbo elevated, blunt; anterior margin acutely rounded, ventral margin convex; anterior adductor muscle scar elongate-oval; pallial line crenulate, close and parallel to ventral margin; no pallial sinus, but at its posterior end, the pallial line curves sharply upward and attaches to posterior adductor muscle scar at its anterior side. Shell with fine, radial, internal striations; posterior adductor muscle scar bound anteriorly by weak but distinct posterior ridge. Remarks This shell is insufficiently preserved for a confident assignment to Wareniconcha : it lacks the external shell and hence the lunule and escutcheon remain unknown; the posterior margin is broken off; and the hinge dentition cannot be examined. However, overall the shell is very similar to the type species Wareniconcha guineensis (Thiele, 1931). It certainly is too short and has a too narrow and elongate anterior adductor muscle scar to be an aberrant specimen of Archivesica aharoni Kiel & Taviani, 2017, or other Italian Miocene species of Archivesica . Stratigraphic and geographic range Upper Oligocene (upper Chattian) to Lower Miocene (Aquitanian), 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 pages 146-147, DOI:10.5852/ejt.2023.910.2365, http://zenodo.org/record/10350702 |
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