Children (7 direct children, 17 direct and indirect children):
Polyodon
(tree size 2)
Psephurus
(tree size 1)
Paleopsephurinae
(tree size 2)
Protopsephurinae
(tree size 2)
Crossopholis
(tree size 1)
Polyodontinae
(tree size 1)
Pholidurus
(tree size 1)