title: Fionidae
text: # Fionidae
  
  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
  
  Genera within the family Fionidae include:
  
  * Fiona Alder & Hancock [in Forbes & Hanley], 1853
  * Calma Alder & Hancock, 1855
  * Cuthona Alder & Hancock, 1855
  * Cuthonella Bergh, 1884
  * Eubranchus Forbes, 1838
  * Murmania Martynov, 2006
  * Tenellia A. Costa, 1866
  * Tergipes Cuvier, 1805
  * Tergiposacca Cella, Carmona, Ekimova, Chichvarkhin, Schepetov & Gosliner, 2016
  * Rubramoena Cella, Carmona, Ekimova, Chichvarkhin, Schepetov & Gosliner, 2016
  * Abronica Cella, Carmona, Ekimova, Chichvarkhin, Schepetov & Gosliner, 2016
  