Runcinoidea
Introduction '''Runcinoidea''' is a taxonomic superfamily (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005) or a clade '''Runcinaecea''' (according to the Malaquias et al. (2009)) of sea slugs, marine gastropod mollusks in the order Runcinida
Taxonomy ===2005 taxonomy===Runcinoidea was recognized as a superfamily in the clade  Cephalaspidea, within the informal group Opisthobranchia in the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).They also recognized two families, Runcinidae and Ilbiidae.=== 2009 taxonomy ===Malaquias et al. (2009) reinstated '''Runcinacea''' as a valid taxon outside the Cephalaspidea.They also recognized two families Runcinidae (with genus ''Runcina'') and Ilbiidae, but they did not mention superfamilies.=== 2010 taxonomy ===Jörger et al. 2010 moved Runcinacea to the Euopisthobranchia.===2017 taxonomy===Runcinoidea was classified in the order Runcinida by the revised classification of the Gastropoda.
Families Families within the Runcinoidea include:* Family Runcinidae H. Adams & A. Adams, 1854* Family Ilbiidae Burn, 1963;Synonyms:* Ildicidae Burn, 1963: synonym of Runcinidae H. Adams & A. Adams, 1854* Peltidae Vayssière, 1885: synonym of Runcinidae H. Adams & A. Adams, 1854
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