Children (11 direct children, 472 direct and indirect children):
Pygopidae
(tree size 3)
Terebratuloidea
(tree size 245)
Dyscolioidea
(tree size 32)
Cancellothyridoidea
(tree size 106)
Dyscoloidea
Stringocephaloidea
(tree size 27)
Orthotomidae
Loboidothyridoidea
(tree size 37)
Cryptonelloidea
(tree size 10)
Compositelasmatoidea
(tree size 1)
Cancellothyroidea