Children (10 direct children, 69 direct and indirect children):
Micraster
(tree size 22)
Cyclasterinae
(tree size 23)
Diplodetus
(tree size 1)
Habanaster
Roweaster
(tree size 3)
Pseudogibbaster
Turanglaster
(tree size 1)
Sogdiaster
(tree size 1)
Isomicraster
(tree size 8)
Isopneustes