Trochoidea (superfamily)

Trochoidea is a superfamily of small to very large vetigastropod sea snails with gills and an operculum.

They have nacre as the inner shell layer. The family within this superfamily include Trochidae.

Note that this taxon is not the same as the pulmonate land snail genus which is spelled the same way: Trochoidea (genus).

Taxonomy

2005 taxonomy

This superfamily consists of nine following families (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005):

• Trochidae Rafinesque, 1815
• Calliostomatidae Thiele, 1924 (1847)
• † Elasmonematidae Knight, 1956
• † Eucochlidae Bandel, 2002
• † Microdomatidae Wenz, 1938
• † Proconulidae Cox, 1960
• Solariellidae Powell, 1951 - synonym: Minoliinae Kuroda, Habe & Oyama, 1971
• † Tychobraheidae Horný, 1992
• † Velainellidae Vasseur, 1880

2008 taxonomy

According to Williams et al. (2008)^[1] the taxonomy of Trochoidea looks this:

• Calliostomatidae
• Liotiidae
• Solariellidae
• Trochidae
• Turbinidae
• † Elasmonematidae
• † Eucochlidae
• † Microdomatidae
• † Proconulidae
• † Tychobraheidae
• † Velainellidae

Unassigned to a family :

• Margarella Thiele, 1893 - Margarella rosea belongs to Cantharidinae,^[2] but Margarella antarctica belongs to Calliostomatidae/Thysanodontinae as Carinastele antarctica.^[2]

References

• Geiger, Daniel L.; Christine E. Thacker. "Molecular phylogeny of Vetigastropoda reveals non-monophyletic Scissurellidae, Trochoidea, and Fissurelloidea". Molluscan Research 25 (1): 47–55. http://www.mapress.com/mr/content/v25/2005f/n1p055.pdf.