Children (20 direct children, 41 direct and indirect children):
Styracosaurus
(tree size 2)
Xenoceratops
(tree size 1)
Pachyrhinosaurus
(tree size 1)
Monoclonius
(tree size 1)
Albertaceratops
(tree size 1)
Avaceratops
(tree size 1)
Centrosaurus
(tree size 1)
Achelousaurus
Einiosaurus
Einiosaur
Brachyceratops
Diabloceratops
(tree size 1)
Pachyrhinosaurini
(tree size 5)
Nasutoceratops
(tree size 1)
Wendiceratops
(tree size 1)
Centrosaurini
(tree size 1)
Machairoceratops
(tree size 1)
Yehuecauhceratops
(tree size 1)
Spinops
(tree size 1)
Stellasaurus
Menefeeceratops
(tree size 1)