WoRMS

WoRMS name details

Modiolus demissus (Dillwyn, 1817)

AphiaID

182821 (urn:lsid:marinespecies.org:taxname:182821)

Classification

Status

unaccepted > superseded combination

Accepted name

Geukensia demissa (Dillwyn, 1817)

Rank

Species

Parent

Modiolus Lamarck, 1799

Original name

Mytilus demissus Dillwyn, 1817

Direct children (2)

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Variety Modiolus demissus var. granosissimus (G. B. Sowerby III, 1914) accepted as Geukensia granosissima (G. B. Sowerby III, 1914) (unaccepted combination)
Variety Modiolus demissus var. plicatula Lamarck, 1819 accepted as Geukensia demissa (Dillwyn, 1817) (unaccepted > junior subjective synonym)

Environment

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

Original description

(of Mytilus demissus Dillwyn, 1817) Dillwyn, L. W. (1817). A descriptive catalogue of Recent shells, arranged according to the Linnean method; with particular attention to the synonymy. John and Arthur Arch, London, Vol. 1: 1-580 pp.; Vol. 2: 581-1092 pp. + index [29 pp.]., available online at https://www.biodiversitylibrary.org/page/11670899
page(s): 314 [details]

Taxonomic citation

MolluscaBase eds. (2026). MolluscaBase. Modiolus demissus (Dillwyn, 1817). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=182821 on 2026-08-06

Taxonomic edit history

Date

action

2005-10-08 10:56:52Z

created

Vanden Berghe, Edward

2011-12-12 16:39:41Z

changed

Rosenberg, Gary

2021-12-14 16:43:17Z

changed

Auffenberg, Kurt

2025-01-07 18:19:13Z

changed

Auffenberg, Kurt

Licensing

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

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Nomenclature

original description (of Mytilus demissus Dillwyn, 1817) Dillwyn, L. W. (1817). A descriptive catalogue of Recent shells, arranged according to the Linnean method; with particular attention to the synonymy. John and Arthur Arch, London, Vol. 1: 1-580 pp.; Vol. 2: 581-1092 pp. + index [29 pp.]., available online at https://www.biodiversitylibrary.org/page/11670899
page(s): 314 [details]

basis of record Vanatta, E. G. (1914). Modiolus demissus Dillw. and var. granosissimus Sby. The Nautilus. 28(2): 35., available online at https://www.biodiversitylibrary.org/page/1750488 [details]

Other

context source (RAS) Australian Antarctic Data Centre. , available online at https://data.aad.gov.au/aadc/biodiversity/ [details]

additional source Hanna, G D. (1921). Modiolus demissus Dillwin [sic], in San Francisco Bay. The Nautilus. 34(3): 91-92., available online at https://www.biodiversitylibrary.org/page/27059872 [details]