Children (17 direct children, 66 direct and indirect children):
Phymosoma
(tree size 27)
Actinophyma
Acanthechinus
Diplotagma
(tree size 2)
Gauthieria
(tree size 3)
Kachchhia
(tree size 1)
Pliocyphosoma
Cosmocyphus
Narindechinus
(tree size 1)
Trochalosoma
(tree size 1)
Micropsis
(tree size 3)
Euporophyma
(tree size 1)
Cyphosoma agassiz, 1838
(tree size 10)
Miocyphosoma
Leiosoma
Koenigia
Psilosoma