The infraorder Gnathodoridacea, described by Odhner in 1934 is a group of nudibranchs that, together with the members of the Doridacea infraorder, formed the traditional taxon Suborder Doridacea , from which they have separated because of the presence of strong lateral chitinous jaws in the buccal bulb.

Bathydoris aioca
(Font: 2012 Gulf of California Expedition)

This infraorder is composed by only two genus, Bathydoris Bergh, 1884, with a few deep cold water species, and Prodoris Baranetz & Minichev, 1995, with a single species.

None of these two genus have any recorded species in Mediterranean or Iberian waters.