Related how?

Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Nephrozoa (Eubilateria)
Protostome (Protostomia)
Spiralia (Spiralians)
Lophotrochozoa
Mollusca (Molluscs)
Gastropoda (Gastropod)
Orthogastropoda
Caenogastropoda
Littorinimorpha

Cassoidea (1048434)

Children (4 direct children, 520 direct and indirect children):

Personidae (tree size 53)

Cassidae (tree size 341)
Helmet snails

Tonnidae (tree size 45)
Tun shells

Charoniidae (tree size 77)