Archivesica strigarum Kiel & Taviani, 2017

Kiel, Steffen, Sami, Marco & Taviani, Marco, 2023, Mollusks (Gastropoda, Bivalvia) from Miocene cold-seep deposits in northern Italy: revisions and additions, European Journal of Taxonomy 910, pp. 115-160 : 146

Archivesica strigarum Kiel & Taviani, 2017

Fig. 12A–H

Archivesica strigarum Kiel & Taviani, 2017: 459 , fig. 13.

Material examined

ITALY – Emilia-Romagna • 1 spec.; Castel di Casio ; MGGC 22322 • 2 specs; Castillon dei Pepoli ; MGGC 22323 (L = 79.8, H = 39.8 mm) • 13 specs; Caselle A ; NRM Mo 204841 (L = 73.2, H = 38.8, W = 27.8 mm), NRM Mo 204842 , NRM Mo 204843 • 13 specs; Casola ; MGGC 22326 (L = 41.5, H = 23.5, W = 13.3), MGGC 22325 (L = 45.0, H = 27.0, W = 16.1), MGGC 22324 (L = 48.6, H = 27.4 mm) • 1 spec.; Guzzano ; MGGC 22328 .

Remarks

Archivesica strigarum was initially described based on only a few specimens from the Middle Miocene Sasso delle Streghe and Deruta localities ( Kiel & Taviani 2017), but our new collections indicate that this species is quite common in the Middle Miocene seep deposits in Italy. The new specimens illustrated here show the previously only poorly known external surface and provide a better view on the hinge.

Stratigraphic and geographic range

Upper Oligocene (upper Chattian) to Middle Miocene, northern Italy.

Figures

Fig. 12. Vesicomyid bivalves from Miocene Calcari a Lucina seep deposits in northern Italy. A–H. Archivesica strigarum Kiel & Taviani, 2017.A–B. Articulated specimen from Caselle A (NRM Mo 204841). C. Hinge of RV (Caselle A, NRM Mo 204842). D. Hinge of LV (Caselle A, NRM Mo 204843). E. Articulated specimen from Casola showing ligament (MGGC 22325). F. Articulated specimen from Casola, view on RV showing anterior adductor muscle scar (MGGC 22326). G. Internal mold of RV showing muscle scars and pallial line, from Castillon dei Pepoli (MGGC 22323).H. Left valve with shell remains, from Casola (MGGC 22324). I–J. Wareniconcha? sp., external view on articulated specimen from Castel di Casio (MGGC 22329).