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Pelagiellidae
Taxonomy
Pelagiellidae was named by Knight (1952). Its type is Pelagiella. It is the type family of Pelagiellacea.
It was assigned to Pelagiellacea by Knight et al. (1960), Runnegar and Jell (1976), Missarzhevsky (1989); to Pelagielliformes by Parkhaev (2001); to Pelagielloidea by Linsley and Kier (1984), Landing et al. (2002), Bouchet et al. (2005), Bouchet et al. (2017), Thomas et al. (2020); to Helcionellida by Ebbestad et al. (2024); and to Pelagiellida by Runnegar (1990), Kouchinsky et al. (2011), Oh et al. (2025).
It was assigned to Pelagiellacea by Knight et al. (1960), Runnegar and Jell (1976), Missarzhevsky (1989); to Pelagielliformes by Parkhaev (2001); to Pelagielloidea by Linsley and Kier (1984), Landing et al. (2002), Bouchet et al. (2005), Bouchet et al. (2017), Thomas et al. (2020); to Helcionellida by Ebbestad et al. (2024); and to Pelagiellida by Runnegar (1990), Kouchinsky et al. (2011), Oh et al. (2025).
Subtaxa
Entered
by P. Wagner on 2005-04-14; modified by P. Novack-Gottshall on 2022-06-22
Synonyms
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Synonymy list
| Year | Name and author |
|---|---|
| 1952 | Pelagiellidae Knight |
| 1960 | Pelagiellidae Knight et al. p. 323 |
| 1962 | Proeccyliopteridae Kobayashi |
| 1962 | Protoscaevogyridae Kobayashi |
| 1976 | Pelagiellidae Runnegar and Jell p. 133 |
| 1984 | Pelagiellidae Linsley and Kier |
| 1989 | Pelagiellidae Missarzhevsky p. 182 |
| 1990 | Pelagiellidae Runnegar p. 252 |
| 2001 | Pelagiellidae Parkhaev p. 191 |
| 2002 | Pelagiellidae Landing et al. p. 299 |
| 2005 | Pelagiellidae Bouchet et al. p. 241 |
| 2011 | Pelagiellidae Kouchinsky et al. p. 133 |
| 2017 | Pelagiellidae Bouchet et al. p. 332 |
| 2020 | Pelagiellidae Thomas et al. p. 618 |
| 2024 | Pelagiellidae Ebbestad et al. |
| 2025 | Pelagiellidae 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.
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]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| P. Yu. Parkhaev 2001 | The Pelagielliformes with turbospiral shell. Its asymmetry is mostly achieved by the projection of the basal (left) side of the last whorl. The spire is hardly projected. |