Actaeon schwartzi Handmann 1883

Abstract

Actaeon schwartzi Handmann, 1883 [= Amathinidae: Adelactaeon? schwartzi (Handmann, 1883)] Actaeon Schwartzi n. f. — Handmann 1883: 168. Actaeon Schwartzi Handm.— Handmann 1888: 40. Acteon vindobonensis (Handmann) — Fordinál & Zlinská 1998: 138, pl. 1, fig. 3 [non Leucotina vindobonensis (Handmann, 1882)]. Type material. The holotype was stored in the Kollegium Kalksburg in Vienna, a Catholic private school, but is lost; SL: 5 mm, MD: 3 mm; Hölles (Austria). Discussion. Handmann (1883) described a thin shell of five whorls with globose last whorl, attaining more than half of the total height, sculpture of broader and narrower, punctate spiral grooves. Columella with small, oblique fold; columellar callus forming narrow, adherent rim delimiting narrow umbilical chink. Fordinál & Zlinská (1998) illustrated a small shell, which corresponds largely to the description of Handmann (1883) (SL: 2.4 mm). It lacks a clear columellar fold, which may be due to its subadult growth stage. We tentatively place this dubious species in the Amathinidae genus Adelactaeon Cossmann, 1895 [type species Myonia japonica A. Adams, 1860; present-day, Japan] Distribution in Central Paratethys. Sarmatian (Middle Miocene): Vienna Basin: Hölles (Austria) (Handmann 1883); Skalica (Slovakia) (Fordinál & Zlinská 1998).

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