Acteonimorpha

Formerly known as Architectibranchia, they were classified among the Cephalaspidea (sensu lato), but they were split when researchers began to apply molecular techniques to the classification of the species. The Acteonimorpha species conform a group (with category of Infraclass) of rather specialized, highly evolved sea slugs and sea snails, (marine gastropod molluscs) within the clade Heterobranchia. Although the great majority of the species are marine, a few have succeeded in making the transition to freshwater.

Acteon tornatilis by Manuel Ballesteros by Manuel Ballesteros

The taxonomy of the Acteonimorpha, according to the recent work by Bouchet et al. (2017) is as follows:

  • Subterclass Acteonimorpha
    • Superfamily Acteonoidea d’Orbigny, 1843
      • Family Acteonellidae Gill, 1871 †
      • Family Acteonidae d’Orbigny, 1843
        • Genus Acteon Montfort, 1810
        • Genus Acteonina d’Orbigny, 1850 †
        • Genus Bathyacteon Valdés, 2008
        • Genus Bulimactaeon Cossmann, 1892 †
        • Genus Callostracon Repetto & Bianco, 2012
        • Genus Colostracon Hamlin, 1884 †
        • Genus Crenilabium Cossmann, 1889
        • Genus Hemiauricula Deshayes, 1853 †
        • Genus Inopinodon Bouchet, 1975
        • Genus Japonactaeon Is. Taki, 1956
        • Genus Maxacteon Rudman, 1971
        • Genus Mysouffa Marcus, 1974
        • Genus Neactaeonina Thiele, 1912
        • Genus Nucleopsis Conrad, 1865 †
        • Genus Obrussena Iredale, 1930
        • Genus Ongleya Finlay & Marwick, 1937 †
        • Genus Ovulactaeon Dall, 1889
        • Genus Pseudactaeon Thiele, 1925
        • Genus Punctacteon Kuroda & Habe, 1961
        • Genus Pupa Röding, 1798
        • Genus Rapturella Salvador & Cunha, 2016
        • Genus Rictaxis Dall, 1871
        • Genus Superstes Finlay & Marwick, 1937 †
        • Genus Tenuiactaeon Aldrich, 1921
        • Genus Tornatellaea Conrad, 1860
        • Genus Triploca Tate, 1893
        • Genus Volvaria Lamarck, 1801 †
        • Genus Wangacteon Stilwell, 1993 †
      • Family Aplustridae Gray, 1847
        • Genus Aplustrum Schumacher, 1817
        • Genus Hydatina Schumacher, 1817
        • Genus Micromelo Pilsbry, 1895
        • Genus Parvaplustrum Powell, 1951
      • Family Bullinidae Gray, 1850
        • Genus Bullina Férussac, 1822
        • Genus Espinosina Ortea & Moro, 2017
        • Genus Rictaxiella Habe, 1958
      • Family Cylindrobullinidae Wenz, 1938 †
        • Genus Cylindrobullina Ammon, 1878 †
        • Genus Globiconcha d’Orbigny, 1842 †
        • Genus Hamlinia Boehm, 1900 †
      • Family Tubiferidae Cossmann, 1895 †
      • Family Zardinellidae Bandel, 1994 †
    • Superfamily Rissoelloidea Gray, 1850
      • Family Rissoellidae Gray, 1850
        • Genus Cythnia Carpenter, 1864
        • Genus Rissoella Gray, 1847

Notes: Taxa that are exclusively fossil are indicated with a dagger †.

Acteonimorpha species cited in the Mediterranean Sea or around the Iberian Peninsula:

Acteon tornatilis @ San Cristobo (Ría de Ferrol) 10.07.2007 by Victoriano Urgorri

Acteon tornatilis

Acteon monterosatoi @ Bahía de Cádiz by Joop Trausel and Frans Slieker (Natural Museum Rotterdam)

Acteon monterosatoi

Acteon incisus @ Yucatan strait, Mexico (Smithsonian) by Brian P Murphy

Acteon incisus

Callostracon amabile @ Bahia de Cádiz, Spain by Joop Trausel and Frans Slieker

Callostracon amabile

Crenilabium exile @ Anzio, Roma, Italy by Joop Trausel and Frans Slieker (Natural Museum Rotterdam)

Crenilabium exile

Hydatina physis by Sonja Ooms

Hydatina physis

Micromelo undatus @ Gran Canaria by Aketza Herrero

Micromelo undatus

Japonacteon pusillus by Andrea Nappo

Japonactaeon pusillus

Rapturella globulina

Rapturella globulina

Bibliography