WoRMS name details
Elphidium williamsoni Haynes, 1973
113291 (urn:lsid:marinespecies.org:taxname:113291)
unaccepted > junior subjective synonym
Species
Cribroelphidium williamsoni (Haynes, 1973) · unaccepted > junior subjective synonym (Lacks the coarsely perforate test...)
Lacks the coarsely perforate test characteristic of Cribroelphidium (Hayward p.c. 2023)
Elphidium excavatum subsp. williamsoni Haynes, 1973 · unaccepted
marine, fresh, terrestrial
recent + fossil
Haynes, J. R. (1973). Cardigan Bay Recent Foraminifera (Cruises of the R. V. Antur, 1962-1964). <em>Bulletin of the British Museum (Natural History), Zoology.</em> Supplement 4, pp. 1-245., available online at https://biodiversitylibrary.org/page/44726681
page(s): p. 207-209, pl. 24, fig. 7; pl. 25, figs 5, 6; pl. 27, figs 1-3 [details] Available for editors
[request]
page(s): p. 207-209, pl. 24, fig. 7; pl. 25, figs 5, 6; pl. 27, figs 1-3 [details] Available for editors
[request]
Type locality contained in Cardigan Bay
type locality contained in Cardigan Bay [details]
Taxonomy Elphidium longipontis has seniority under ICZN principle of priority. Molecular studies have shown the two species...
Taxonomy Elphidium longipontis has seniority under ICZN principle of priority. Molecular studies have shown the two species williamsoni and longipontis are the same. [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2026). World Foraminifera Database. Elphidium williamsoni Haynes, 1973. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=113291 on 2026-07-20
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Nomenclature
original description
Haynes, J. R. (1973). Cardigan Bay Recent Foraminifera (Cruises of the R. V. Antur, 1962-1964). <em>Bulletin of the British Museum (Natural History), Zoology.</em> Supplement 4, pp. 1-245., available online at https://biodiversitylibrary.org/page/44726681
page(s): p. 207-209, pl. 24, fig. 7; pl. 25, figs 5, 6; pl. 27, figs 1-3 [details] Available for editors [request]
basis of record Gross, O. (2001). Foraminifera, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 60-75 (look up in IMIS) [details]
page(s): p. 207-209, pl. 24, fig. 7; pl. 25, figs 5, 6; pl. 27, figs 1-3 [details] Available for editors
[request]basis of record Gross, O. (2001). Foraminifera, <B><I>in</I></B>: Costello, M.J. <i>et al.</i> (Ed.) (2001). <i>European register of marine species: a check-list of the marine species in Europe and a bibliography of guides to their identification. Collection Patrimoines Naturels,</i> 50: pp. 60-75 (look up in IMIS) [details]
Taxonomy
source of synonymy
Hayward, B.W., Holzmann, M., Langer, M.R., Parker, J.H., Tsuchiya, M. (2025). Molecular and morphological taxonomy and biogeography of living Cribroelphidiidae, Elphidiellidae, Elphidiidae, Haynesinidae and related taxa (Foraminifera, Rotalioidea). <em>Micropaleontology.</em> 71: 433-808., available online at https://doi.org/10.47894/mpal.71.5.01 [details] Available for editors [request]
[request]
Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
From editor or global species database
Ecology Infaunal, herbivore, widespread in marginal marine environments along the European seaboard, northern limit Oslo fjord, absent from the Baltic; dominant in a brackish lagoon, Canada, and present in Virginia, USA; low marsh, intertidal to subtidal to 5m (Alve and Murray, 1999); husbands chloroplasts (Knight and Mantoura, 1985); common in sediments with highly variable mud and TOC contents; euryhaline. [details]Taxonomy Elphidium longipontis has seniority under ICZN principle of priority. Molecular studies have shown the two species williamsoni and longipontis are the same. [details]
To Biodiversity Heritage Library (2 publications)
To European Nucleotide Archive, ENA (Elphidium williamsoni)
To GenBank (196 nucleotides; 3 proteins)
To PESI (from synonym Elphidium excavatum subsp. williamsoni Haynes, 1973)
To PESI
To European Nucleotide Archive, ENA (Elphidium williamsoni)
To GenBank (196 nucleotides; 3 proteins)
To PESI (from synonym Elphidium excavatum subsp. williamsoni Haynes, 1973)
To PESI
From editor or global species database
