Children (11 direct children, 3388 direct and indirect children):
Unionoidea
(tree size 3057)
Hyriidae
(tree size 139)
Margaritiferidae
(tree size 38)
Etheriidae
(tree size 6)
Mutelidae
(tree size 17)
Mycetopodidae
(tree size 87)
Anthracosiidae
(tree size 7)
Iridinidae
(tree size 24)
Etherioidea
Silesunionoidea
(tree size 2)
Hyrioidea