MolluscaBase name details
Planorbis multiformis var. minutus Hilgendorf, 1867 †
1054350 (urn:lsid:marinespecies.org:taxname:1054350)
unaccepted > junior subjective synonym
Variety
- Subvariety Planorbis multiformis var. minutus teres Hilgendorf, 1867 † accepted as Gyraulus subhemistoma (A. d'Orbigny, 1852) † (junior synonym; not available as species-group name (ICZN Article 45.6.4))
fossil only
Hilgendorf, F. (1867). Über <em>Planorbis multiformis</em> im Steinheimer Süßwasserkalk. <em>Monatsberichte der Königlich-Preussischen Akademie der Wissenschaften zu Berlin.</em> 1866: 474-504., available online at https://www.biodiversitylibrary.org/page/39053038
page(s): 487, unnumbered plate, fig. 15 [details]
page(s): 487, unnumbered plate, fig. 15 [details]
Note Steinheim am Albuch, Baden-Württemberg,...
From editor or global species database
Type locality Steinheim am Albuch, Baden-Württemberg, Germany; late Langhian (mammal zone MN 7), middle Miocene [details]
Status P. multiformis minutus Hilgendorf, 1867 is invalid for it is a junior homonym of P. minutus Serres, 1829. No replacement...
Status P. multiformis minutus Hilgendorf, 1867 is invalid for it is a junior homonym of P. minutus Serres, 1829. No replacement has been introduced. Wenz (1923) proposed P. multiformis minutus Hilgendorf, 1867 to be a junior synonym of P. subhemistoma d'Orbigny, 1852, which he ranked as subspecies of G. trochiformis. However, that synonymization was not adopted by later authors, who considered G. minutus a distinct species (e.g., Rasser 2013). In order to bring stability to this issue, it is proposed here to accept the synonymization by Wenz but treat the taxon as distinct species. [details]
MolluscaBase eds. (2021). MolluscaBase. Planorbis multiformis var. minutus Hilgendorf, 1867 †. Accessed at: http://www.molluscabase.org/aphia.php?p=taxdetails&id=1054350 on 2025-09-11
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original description
Hilgendorf, F. (1867). Über <em>Planorbis multiformis</em> im Steinheimer Süßwasserkalk. <em>Monatsberichte der Königlich-Preussischen Akademie der Wissenschaften zu Berlin.</em> 1866: 474-504., available online at https://www.biodiversitylibrary.org/page/39053038
page(s): 487, unnumbered plate, fig. 15 [details]
additional source Rasser, M. W. (2013). Evolution in isolation: the Gyraulus species flock from Miocene Lake Steinheim revisited. <em>Hydrobiologia.</em> 739(1): 7-24., available online at https://doi.org/10.1007/s10750-013-1677-4 [details] Available for editors
[request]
page(s): 487, unnumbered plate, fig. 15 [details]
additional source Rasser, M. W. (2013). Evolution in isolation: the Gyraulus species flock from Miocene Lake Steinheim revisited. <em>Hydrobiologia.</em> 739(1): 7-24., available online at https://doi.org/10.1007/s10750-013-1677-4 [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Status P. multiformis minutus Hilgendorf, 1867 is invalid for it is a junior homonym of P. minutus Serres, 1829. No replacement has been introduced. Wenz (1923) proposed P. multiformis minutus Hilgendorf, 1867 to be a junior synonym of P. subhemistoma d'Orbigny, 1852, which he ranked as subspecies of G. trochiformis. However, that synonymization was not adopted by later authors, who considered G. minutus a distinct species (e.g., Rasser 2013). In order to bring stability to this issue, it is proposed here to accept the synonymization by Wenz but treat the taxon as distinct species. [details]Type locality Steinheim am Albuch, Baden-Württemberg, Germany; late Langhian (mammal zone MN 7), middle Miocene [details]
