MolluscaBase - Pyramidula alternata (Say, 1817)

MolluscaBase name details

Pyramidula alternata (Say, 1817)

AphiaID

1366375 (urn:lsid:marinespecies.org:taxname:1366375)

Classification

Status

unaccepted (unaccepted combination)

Accepted name

Anguispira alternata (Say, 1817)

Rank

Species

Parent

Pyramidula Fitzinger, 1833

Original name

Helix alternata Say, 1817

Direct children (12)

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Subspecies Pyramidula alternata alternata (Say, 1817) accepted as Anguispira alternata alternata (Say, 1817) (unaccepted combination)
Subspecies Pyramidula alternata carinata Pilsbry, 1896 accepted as Anguispira alternata var. carinata (Pilsbry, 1896) (unaccepted combination)
Subspecies Pyramidula alternata costata (J. Lewis, 1871) accepted as Anguispira alternata (Say, 1817) (junior synonym)
Subspecies Pyramidula alternata fergusoni (Bland, 1862) accepted as Anguispira fergusoni (Bland, 1862) (unaccepted combination)
Subspecies Pyramidula alternata mordax (Shuttleworth, 1852) accepted as Anguispira mordax (Shuttleworth, 1852) (unaccepted combination)
Subspecies Pyramidula alternata rarinotata Pilsbry, 1900 accepted as Anguispira strongylodes (Reeve, 1854) (junior synonym)
Variety Pyramidula alternata var. alba (Tryon, 1866) accepted as Anguispira alternata (Say, 1817) (color variety)
Variety Pyramidula alternata var. carinata Pilsbry, 1896 accepted as Anguispira alternata var. carinata (Pilsbry, 1896) (original combination)
Variety Pyramidula alternata var. costata (J. Lewis, 1871) accepted as Anguispira alternata (Say, 1817) (junior synonym)
Variety Pyramidula alternata var. eriensis G. H. Clapp, 1916 accepted as Anguispira alternata (Say, 1817) (unaccepted > junior subjective synonym)
Variety Pyramidula alternata var. knoxensis Pilsbry, 1901 accepted as Anguispira knoxensis (Pilsbry, 1901) (unaccepted rank)
Variety Pyramidula alternata var. rarinotata Pilsbry, 1900 accepted as Anguispira strongylodes (Reeve, 1854) (junior synonym)

Environment

~~marine~~, ~~brackish~~, ~~fresh~~, terrestrial

Original description

(of Helix alternata Say, 1817) Say, T. (1817). Conchology. - In: Nicholson, W.: American edition of the British Encyclopedia, or, dictionary of arts and sciences comprising an accurate and popular view of the present improved state of human knowledge. First Edition, A-3 - C-6 [= 1-20], pl. [1-4].
page(s): [unpaginated], pl. 1, fig. 2 [details]

Taxonomic citation

MolluscaBase eds. (2021). MolluscaBase. Pyramidula alternata (Say, 1817). Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1366375 on 2025-05-16

Taxonomic edit history

Date

action

2019-08-12 09:35:35Z

created

Bieler, Rüdiger

2021-09-04 17:20:12Z

changed

Auffenberg, Kurt

Licensing

The webpage text is licensed under a Creative Commons Attribution 4.0 License

[taxonomic tree]

Sources (7)

original description (of Helix alternata Say, 1817) Say, T. (1817). Conchology. - In: Nicholson, W.: American edition of the British Encyclopedia, or, dictionary of arts and sciences comprising an accurate and popular view of the present improved state of human knowledge. First Edition, A-3 - C-6 [= 1-20], pl. [1-4].
page(s): [unpaginated], pl. 1, fig. 2 [details]

basis of record InvertEBase. (2018). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase (InvertEBase.org) project. [details]

additional source Pilsbry, H. A. (1901). The subspecies of Pyramidula alternata. The Nautilus. 15(1): 6-7., available online at https://www.biodiversitylibrary.org/page/1738385
page(s): 7 [details]

additional source Baker, F. C. (1897). On a collection of mollusks from Grand Tower, Illinois. The Nautilus. 11(3): 28-30., available online at https://www.biodiversitylibrary.org/page/1774602
page(s): 30 [details]

additional source Johnson, C. W. (1900). Some notes on the land shells of western Florida. The Nautilus. 13(12): 141-143., available online at https://www.biodiversitylibrary.org/page/42800047
page(s): 143 [details]

additional source Pilsbry, H. A. & Johnson, C. W. (1895). Pyramidula alternata and Gastrodonta ligera, reversed. The Nautilus. 9(7): 84., available online at https://www.biodiversitylibrary.org/page/1731429 [details]

additional source Anonymous. (1896). Shells of Maryland. The Nautilus. 10(2): 23., available online at https://www.biodiversitylibrary.org/page/1818956 [details]