MolluscaBase name details
Ptychosyrinx subaequalis (G. B. Sowerby I, 1846) †
1598761 (urn:lsid:marinespecies.org:taxname:1598761)
accepted > unreplaced junior homonym (junior homonym of Pleurotoma subequalis [sic] Conrad, 1835 (under Art. 58.1 deemed to be identical))
Species
Ptychosyrinx Thiele, 1925 accepted as Cryptogemma Dall, 1918
Gemmula subaequalis (G. B. Sowerby I, 1846) † · unaccepted > superseded combination
Pleurotoma subaequalis G. B. Sowerby I, 1846 † · unaccepted > superseded combination
marine, brackish, fresh, terrestrial
fossil only
(of Pleurotoma subaequalis G. B. Sowerby I, 1846 †) Sowerby, G. B. I. (1846). Appendix to part II. Descriptions of Tertiary fossil shells from South America. In: Darwin, C. Geological Observations on South America. Being the third part of the geology of the voyage of the Beagle under the command of Capt. Fitzroy, R.N. during the years 1832 to 1836. Smith, Elder & Co., London. pp 249-264, pls 2-5. , available online at http://darwin-online.org.uk/content/frameset?itemID=F273&viewtype=text&pageseq=1
page(s): 257, pl. 4, fig. 52 [details]
page(s): 257, pl. 4, fig. 52 [details]
Holotype (of Pleurotoma subaequalis G. B. Sowerby I,...
Holotype (of Pleurotoma subaequalis G. B. Sowerby I, 1846) NHMUK NHM-G26344, geounit Chile [details]
MolluscaBase eds. (2025). MolluscaBase. Ptychosyrinx subaequalis (G. B. Sowerby I, 1846) †. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1598761 on 2025-09-11
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original description
(of Pleurotoma subaequalis G. B. Sowerby I, 1846 †) Sowerby, G. B. I. (1846). Appendix to part II. Descriptions of Tertiary fossil shells from South America. In: Darwin, C. Geological Observations on South America. Being the third part of the geology of the voyage of the Beagle under the command of Capt. Fitzroy, R.N. during the years 1832 to 1836. Smith, Elder & Co., London. pp 249-264, pls 2-5. , available online at http://darwin-online.org.uk/content/frameset?itemID=F273&viewtype=text&pageseq=1
page(s): 257, pl. 4, fig. 52 [details]
basis of record Griffin, M.; Nielsen, S. N. (2008). A revision of the type specimens of Tertiary molluscs from Chile and Argentina described by d'Orbigny (1842), Sowerby (1846) and Hupé (1854). <em>Journal of Systematic Palaeontology.</em> 6(3): 251-316., available online at https://doi.org/10.1017/s1477201907002374
page(s): 306, pl. 23, fig. 18-19 [details] Available for editors
[request]
page(s): 257, pl. 4, fig. 52 [details]
basis of record Griffin, M.; Nielsen, S. N. (2008). A revision of the type specimens of Tertiary molluscs from Chile and Argentina described by d'Orbigny (1842), Sowerby (1846) and Hupé (1854). <em>Journal of Systematic Palaeontology.</em> 6(3): 251-316., available online at https://doi.org/10.1017/s1477201907002374
page(s): 306, pl. 23, fig. 18-19 [details] Available for editors
[request]
Present Inaccurate Introduced: alien Containing type locality
Holotype (of Pleurotoma subaequalis G. B. Sowerby I, 1846) NHMUK NHM-G26344, geounit Chile [details]
