The Ranellidae, common name the triton shells or tritons, are a taxonomic family of small to very large predatory sea snails, marine gastropod mollusks in the clade Littorinimorpha.
The family Ranellidae consists of these subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005):
Ranellinae Gray, 1854 - synonyms: Agrobuccininae Kilias, 1973; Simpulidae Dautzenberg, 1900; Gyrineinae Higo & Goto, 1993 (n.a.)Cymatiinae Iredale, 1913 (1854) - synonyms: Tritoniidae H. Adams & A. Adams, 1853 (inv.); Neptunellinae Gray, 1854; Lampusiidae Newton, 1891; Lotoriidae Harris, 1897; Septidae Dall & Simpson, 1901; Aquillidae Pilsbry, 1904; Nyctilochidae Dall, 1912; Charoniinae Powell, 1933Genera within the family Ranellidae include:
subfamily Cymatiinae
Cabestana Röding, 1798Charonia Gistel, 1848Cymatiella Iredale, 1924Cymatium Roding, 1798Gelagna Schauffus, 1869Gutturnium Mørch, 1852Linatella Gray, 1857Lotoria Emerson & Old, 1963Monoplex Perry, 1811 - synonym: Dissentoma Pilsbry, 1945Ranularia Schumacher, 1817Reticutriton Habe & Kosuge, 1966Sassia Bellardi, 1873 - synonym: Proxicharonia Powell, 1938Septa Perry, 1810Turritriton Dall, 1904subfamily Ranellinae
Argobuccinum Herrmannsen, 1846Argobuccinum pustulosum tumidum (Solander in Lightfoot, 1786)Argobuccinum tumidum (Dunker, 1862)Biplex Perry, 1810Fusitriton Cossmann, 1903Gyrineum Link, 1807Halgyrineum Beu, 1998Obscuranella Kantor & Harasewych, 2000Priene H. Adams & A. Adams, 1858Ranella Lamarck, 1816 - type genus, synonyms: Mayena Gray, 1857
