Acteocina undetermined

Zenodo (CERN European Organization for Nuclear Research)

Abstract

Acteocina sp. Figs 38A–B Illustrated material. NHMW 1860/0001/0346d, SL: 3.5 mm, MD: 1.9 mm, Lednice (= Eisgrub) (Czech Republic), Figs 38A 1 –A 3. NHMW 1860/0001/0346e, SL: 3.9 mm, MD: 1.8 mm, Lednice (= Eisgrub) (Czech Republic), Figs 38B 1 –B 3. Discussion. The illustrated shells are characterized by their sharply angled shoulder and nearly flat apex. The shells are reminiscent of the Badenian Retusa promamillata Boettger, 1907 but differ in their protruding and less tilted protoconch (about 140° instead of 180°) and deeply canaliculate suture, which place them in Acteocina. We refrain from describing these specimens formally as new species and speculate that the shells might be extreme morphs of Acteocina volhynica (Eichwald, 1830). Paleoenvironment. Shallow marine, inner neritic (own data M.H.). Distribution in Central Paratethys. Sarmatian (Middle Miocene): Vienna Basin: Lednice (Czech Republic) (hoc opus).

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