Children (7 direct children, 62 direct and indirect children):
Macraucheniidae
(tree size 23)
Proterotheriidae
(tree size 22)
Notonychopidae
(tree size 6)
Adianthidae
(tree size 2)
Mesorhinidae
Protolipternidae
(tree size 1)
Sparnotheriodontidae
(tree size 1)