Published January 8, 2026 | Version v1
Taxonomic treatment Open

Actaeon schwartzi Handmann 1883

  • 1. Natural History Museum Vienna, Burgring 7, 1010 Vienna, Austria mathias. harzhauser @ nhm. at; https: // orcid. org / 0000 - 0002 - 4471 - 6655
  • 2. 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. 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

Description

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).

Notes

Published as part of Harzhauser, Mathias, Landau, Bernard M. & Malaquias, Manuel António E., 2026, Marine shelled Heterobranchia in part (Gastropoda) of the Miocene Central Paratethys Sea, pp. 1-150 in Zootaxa 5742 (1) on page 129, DOI: 10.11646/zootaxa.5742.1.1, http://zenodo.org/record/19166173

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Linked records

Additional details

Biodiversity

Scientific name authorship
Handmann
Kingdom
Animalia
Phylum
Mollusca
Order
Cephalaspidea
Family
Acteonidae
Genus
Actaeon
Species
schwartzi
Taxon rank
species
Taxonomic concept label
Actaeon schwartzi Handmann, 1883 sec. Harzhauser, Landau & Malaquias, 2026

References

  • Handmann, R. (1883) Zur geologischen Gliederung der Conchylienablagerung von Gainfarn. Verhandlungen der k. k. Geologischen Reichsanstalt, 1883, 55-65. [https://opac.geologie.ac.at/ais312/dokumente/VH1883_055_A.pdf]
  • Handmann, R. (1888) Die Neogenablagerungen des osterreichisch-ungarischen Tertiarbeckens. Aschendorff, Munster, 71 pp. [https://sammlungen.ulb.uni-muenster.de/hd/content/pageview/2023238]
  • Fordinal, K. & Zlinska, A. (1998) Fauna vrchnej casti hohicskeho suvrstvia (sarmat) v Skalici (viedenska panva). Mineralia Slovaca, 30, 137-146. https://doi.org/10.1016/S0360-1315(97)00042-0
  • Handmann, R. (1882) Tertiarfauna des Wiener Beckens: (II. Bericht). Verhandlungen der k. k. Geologischen Reichsanstalt, 1882, 255-274. [https://opac.geologie.ac.at/ais312/dokumente/VH1882_255_A.pdf]
  • Cossmann, M. (1895) Essais de paleoconchologie comparee. Premiere Livraison. The author and Comptoir Geologique, London, 159 pp., 7 pls. [http://biodiversitylibrary.org/page/36852875] https://doi.org/10.5962/bhl.title.52314
  • Adams, A. (1860) On some new genera and species of Mollusca from Japan. Annals and Magazine of Natural History, Series 3, 5, 299-303 + 405 - 413. [http://www.biodiversitylibrary.org/page/2320773] https://doi.org/10.1080/00222936008697243