Fionidae is a family of sea slugs, aeolid nudibranchs, marine gastropod molluscs in the superfamily Fionoidea.

Taxonomic history

This family was expanded to include Tergipedidae, Eubranchidae and Calmidae as a result of a molecular phylogenetics study. This was reversed in 2017 with further DNA evidence and a re-interpretation of genus and family characteristics.

Genera

According to Korshunova et al. (2025), genera within the family Fionidae include:

  • Fiona Alder & Hancock [in Forbes & Hanley], 1853
  • Tergiposacca Cella, Carmona, Ekimova, Chichvarkhin, Schepetov & Gosliner, 2016

Other genera not mentioned in Korshunova et al. (2025) include:

  • Zatteria Eliot, 1902

External links

  • Media related to Fionidae at Wikimedia Commons