Children (12 direct children, 102 direct and indirect children):
Meniscopsia
(tree size 1)
Ptychopariidae
(tree size 9)
Raymondinidae
(tree size 5)
Raymondinacea
Ptychopariina
(tree size 30)
Olenidae
(tree size 38)
Lonchocephalidae
(tree size 1)
Asaphiscidae
(tree size 2)
Kingstoniidae
(tree size 1)
Olenina
(tree size 3)
Diceratocephalidae
Tengfengiidae
Solenopleuracea