Children (19 direct children, 19 direct and indirect children):
Archaster angulatus
Archaster typicus
Archaster lorioli
Archaster agassizi
Archaster americanus
Archaster andromeda
Archaster arcticus
Archaster dawsoni
Archaster efflorescens
Archaster florae
Archaster hesperus
Archaster insignis
Archaster longobrachialis
Archaster magnificus
Archaster parelii
Archaster subinermis
Archaster tenuis
Archaster tenuispinus
Archaster vexillifer