Ringiculocosta Sacco 1892

Abstract

Genus Ringiculocosta Sacco, 1892 Type species. Marginella costata Eichwald, 1830; by monotypy. Middle Miocene, Ukraine. Discussion. Ringiculocosta Sacco, 1892 is currently listed as subjective junior synonym of Ringicula Deshayes, 1838 by MolluscaBase eds (2025b). Ringiculocosta costata (Eichwald, 1830), Ringiculocosta plicatula (Mayer, 1871), from the Burdigalian (Early Miocene) of France, and Ringiculocosta cancellarioides (Seguenza, 1881), from the Middle and Late Miocene of the Central Paratethys Sea and the Proto-Mediterranean Sea, differ distinctly from Ringicula in their peculiar, cancellate sculpture. Therefore, we prefer to keep these species separated at genus level. The genus appeared during the Early Miocene in the northeastern Atlantic and persisted to the Pliocene of the Mediterranean Sea (Ringiculocosta costata astensis Sacco, 1892). Ringiculocosta occurred also in the Eastern Paratethys Sea during the Tarkhanian and Chokrakian (Middle Miocene) (Guzhov 2022a). During the Early Miocene it reached also the North Sea where it was represented by two species (Ringiculocosta costata (Eichwald, 1830) and Ringiculocosta costata sensu Moths et al. 2010).

Authors 3

1. Mathias Harzhauser

   Natural History Museum Vienna

   Affiliation as printed

   Natural History Museum Vienna, Burgring 7, 1010 Vienna, Austria mathias. harzhauser @ nhm. at; https: // orcid. org / 0000 - 0002 - 4471 - 6655

2. Bernard Landau Aachen

   University of Lisbon · Instituto Dom Luiz · Naturalis Biodiversity Center

   Affiliation as printed

   Naturalis Biodiversity Center, P. O. Box 9517, 2300 RA Leiden, Netherlands; Instituto Dom Luiz da Universidade de Lisboa, Campo Grande, 1749 - 016 Lisboa, Portugal; and International Health Centres, Av. Infante de Henrique 7, Areias São João, P- 8200 Albufeira, Portugal bernardmlandau @ gmail. com; https: // orcid. org / 0000 - 0002 - 7768 - 8494

3. Manuel António E. Malaquias

   University of Bergen · Natural History Museum Vienna

   Affiliation as printed

   Natural History Museum Vienna, Burgring 7, 1010 Vienna, Austria mathias. harzhauser @ nhm. at; https: // orcid. org / 0000 - 0002 - 4471 - 6655 & Department of Natural History, University Museum of Bergen, University of Bergen, PB 7800, 5020 - Bergen, Norway manuel. malaquias @ uib. no; http: // orcid. org / 0000 - 0002 - 9668 - 945 X & Natural History Museum Vienna, Burgring 7, 1010 Vienna, Austria mathias. harzhauser @ nhm. at; https: // orcid. org / 0000 - 0002 - 4471 - 6655