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Pelagiellida
Taxonomy
Pelagiellida was named by MacKinnon (1985). It is not extant.
It was assigned to Monoplacophora by Sarmiento et al. (2001); to Archaeobranchia by Bouchet et al. (2017); to Mollusca by Sepkoski (2002), Kouchinsky et al. (2017); to Gastropoda by Thomas et al. (2020); and to Helcionelloida by Wagner (2023), Oh et al. (2025).
It was assigned to Monoplacophora by Sarmiento et al. (2001); to Archaeobranchia by Bouchet et al. (2017); to Mollusca by Sepkoski (2002), Kouchinsky et al. (2017); to Gastropoda by Thomas et al. (2020); and to Helcionelloida by Wagner (2023), Oh et al. (2025).
Entered
by J. Sepkoski on 2003-01-23; modified by P. Novack-Gottshall on 2025-08-30
Synonymy list
| Year | Name and author |
|---|---|
| 1985 | Pelagiellida MacKinnon |
| 2001 | Pelagiellida Sarmiento et al. p. 132 |
| 2002 | Pelagiellida Sepkoski |
| 2017 | Pelagiellida Bouchet et al. p. 332 |
| 2017 | Pelagiellida Kouchinsky et al. p. 345 |
| 2020 | Pelagiellida Thomas et al. p. 617 |
| 2023 | Pelagiellida Wagner |
| 2025 | Pelagiellida Oh et al. p. 13 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Or. †Pelagiellida MacKinnon 1985
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Fm. †Aldanellidae Linsley and Kier 1984
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G. †Aldanella Vostokova 1962
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†Aldanella attleborensis Shaler and Foerste 1888
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Invalid names: Aldanella kolymica Barskova 1988 [synonym], Aldanella operosa Rozanov and Missarzhevsky 1966 [synonym], Aldanella polonica Lendzion 1977 [synonym], Aldanella rozanovi Rozanov et al. 1969 [synonym], Aldanella utchurica Rozanov et al. 1969 [synonym], Aldanella yanjiaheensis Chen 1984 [synonym]
†Aldanella costata Missarzhevsky 1989
†Aldanella crassa Rozanov et al. 1969
†Aldanella golubevi Parkhaev 2007
†Aldanella iberica Gubanov et al. 2004
†Aldanella kunda Opik 1926
†Aldanella patelliforma Bokova 1990
†Aldanella patelliformis Bokova 1990
†Aldanella remota Billings 1872
†Aldanella sibirica Parkhaev and Karlova 2011
Invalid names: Paraaldanella Golubev 1976 [synonym]
G. †Nomgoliella Missarzhevsky 1980
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†Nomgoliella australiensis Parkhaev 2001
†Nomgoliella sinistrivolubilis Missarzhevsky 1980
Fm. †Pelagiellidae Knight 1952
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G. †Pelagiella Matthew 1895
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†Pelagiella adunca He et al. 1984
†Pelagiella asymmetrica Ermak and Pelman 1986
†Pelagiella atlantoides Mathews 1894
†Pelagiella atlasensis Geyer 1986
†Pelagiella bentica Ermak and Pelman 1986
†Pelagiella broeggeri Grönwall 1902
†Pelagiella corinthiana Runnegar and Jell 1976
†Pelagiella crassa Geyer 1986
†Pelagiella deltoides Runnegar and Jell 1976
†Pelagiella escayachensis Kobayashi 1937
†Pelagiella exigua Resser and Howell 1938
†Pelagiella lorenzi Kobayashi 1939
†Pelagiella madianensis Zhou and Xiao 1984
†Pelagiella mareki Horný 1964
†Pelagiella nevadense Skovsted 2006
†Pelagiella primaeva Billings 1872
†Pelagiella serpentis Ermak and Pelman 1986
Invalid names: Auriculaspira Zhou and Xiao 1984 [synonym], Cambretina Horný 1964 [synonym], Costipelagiella Horný 1964 [synonym], Protoscaevogyra Kobayashi 1939 [synonym]
Invalid names: Proeccyliopteridae Kobayashi 1962 [synonym], Protoscaevogyridae Kobayashi 1962 [synonym]
Invalid names: Pelagielloidea Knight 1956 [empty]
Diagnosis
No diagnoses are available