Eukaryota  >  Metazoa  >  Mollusca  >  Gastropoda  >  Trochida

Family	Genus	Species
Areneidae	2	4
Calliostomatidae	7	44
Colloniidae	12	26
Liotiidae	2	3
Margaritidae	2	15
Phasianellidae	5	25
Skeneidae	6	14
Solariellidae	16	160
Tegulidae	7	49
Trochidae	54	231
Turbinidae	26	153