Children (10 direct children, 746 direct and indirect children):
Megalodontoidea
(tree size 92)
Requieniidae
(tree size 29)
Diceratidae
(tree size 60)
Caprinidae
(tree size 24)
Hippuritidae
(tree size 71)
Radiolitidae
(tree size 156)
Monopleuridae
(tree size 58)
Hippuritidina
(tree size 93)
Radiolitidina
(tree size 105)
Requieniidina
(tree size 48)