Alternative spelling: Trochacea
Parent taxon: Vetigastropoda according to P. J. Wagner 2023
See also Beesley 1998, Beu et al. 1990, Bouchet et al. 2005, Bouchet et al. 2017, Ferrari 2014, Harzhauser 2004, Harzhauser 2007, Knight et al. 1960, Lozouet et al. 2001, Nützel and Ketwetsuriya 2016, Ponder and Lindberg 1997, Squires 1987, Squires 2010, Todd 2001 and Ward and Blackwelder 1987
Sister taxa: Amberleyoidea, Angarioidea, Blodgettella, Cirroidea, Crosseolidae, Frydatinus, Jurassiphorus, Lepetellida, Microdomatoidea, Nodoconus, Pendromidae, Pleurotomariida, Pleurotomarioidea, Ptychomphaloidea, Purkynespira, Schizogonioidea, Seguenziida, Seguenzioidea, Selenimorpha, Trochina, Turbinoidea
Subtaxa: Angariidae Araeonematidae Areneidae Ataphridae Calliostomatidae Colloniidae Epulotrochidae Eucochlidae Fossarinidae Liotiidae Metriomphalidae Nododelphinulidae Phasianellidae Sclarotrardidae Skeneidae Solariellidae Strianematina Tegulidae Trochidae Turbinidae Ueckerconulus Velainellidae
Type: Trochus
Ecology: epifaunal grazer