Children (9 direct children, 28 direct and indirect children):
Ginkgophyta
Coniferae
Ginkgoatae
Bennettitopsida
(tree size 9)
Cordaitopsida
(tree size 4)
Cordaïtopsida
Pteridospermae
(tree size 2)
Seed ferns
Cycadofilices
(tree size 3)
Pteridospermae
Coniferopsida
Elkinsia
(tree size 1)