Children (9 direct children, 123 direct and indirect children):
Ophiocreas
(tree size 25)
Sthenocephalus
(tree size 2)
Asteromorpha
(tree size 6)
Asterostegus
(tree size 3)
Asteroschema
(tree size 42)
Astroceras
(tree size 16)
Trichaster
(tree size 8)
Squamophis
(tree size 3)
Euryale
(tree size 9)