Fionoidea

Fionoidea
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Order:	Nudibranchia
Suborder:	Aeolidacea
Superfamily:	Fionoidea ; Gray, 1857
Families
	See Families

Last updated February 17, 2026

Fionoidea is a superfamily of is a superfamily of nudibranchs, shell-less marine gastropod molluscs or sea slugs, in the suborder Aeolidacea.^[1] The families within Fionoidea were shown to be monophyletic on DNA evidence and a re-interpretation of family characteristics was provided.^[2]^[1]

Families

According to Korshunova and colleagues (2025), the following genera are recognised in the superfamily Fionoidea:^[1]

Family Abronicidae Korshunova, Martynov, Bakken, Evertsen, Fletcher, Mudianta, Saito, Lundin, Schrödl & Picton, 2017
Family Calmidae Iredale & O'Donoghue, 1923
Family Cuthonellidae Miller, 1971
Family Cuthonidae Odhner, 1934
Family Eubranchidae Odhner, 1934
Family Fionidae Gray, 1857
Family Murmaniidae Korshunova, Martynov, Bakken, Evertsen, Fletcher, Mudianta, Saito, Lundin, Schrödl & Picton, 2017
Family Tergipedidae Bergh, 1889
Family Trinchesiidae F. Nordsieck, 1972
Family Xenocratenidae Martynov, Lundin, Picton, Fletcher, Malmber &Korshunova, 2020

References

1 2 3 Korshunova, Tatiana; Fletcher, Karin; Martynov, Alexander (2025-08-01). "The endless forms are the most differentiated—how taxonomic pseudo-optimization masked natural diversity and evolution: the nudibranch case" . Zoological Journal of the Linnean Society. 204 (4). doi:10.1093/zoolinnean/zlaf057. ISSN 0024-4082.
↑ Korshunova, Tatiana; Martynov, Alexander; Picton, Bernard (2017-09-26). "Ontogeny as an important part of integrative taxonomy in tergipedid aeolidaceans (Gastropoda: Nudibranchia) with a description of a new genus and species from the Barents Sea". Zootaxa. 4324 (1). doi:10.11646/zootaxa.4324.1.1. ISSN 1175-5334.

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[Korshunova_et_al2025-1] 1 2 3 Korshunova, Tatiana; Fletcher, Karin; Martynov, Alexander (2025-08-01). "The endless forms are the most differentiated—how taxonomic pseudo-optimization masked natural diversity and evolution: the nudibranch case" . Zoological Journal of the Linnean Society. 204 (4). doi:10.1093/zoolinnean/zlaf057. ISSN 0024-4082.

[Korshunova_et_al2017-2] Korshunova, Tatiana; Martynov, Alexander; Picton, Bernard (2017-09-26). "Ontogeny as an important part of integrative taxonomy in tergipedid aeolidaceans (Gastropoda: Nudibranchia) with a description of a new genus and species from the Barents Sea". Zootaxa. 4324 (1). doi:10.11646/zootaxa.4324.1.1. ISSN 1175-5334.

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