Children (10 direct children, 340 direct and indirect children):
Ostracoderm
Ostracodermi
Myllokunmingiiformes
Cephalaspidomorphi
(tree size 166)
Cephalaspidomorphs
Myxinoidea
Areyongalepis
Myxini
(tree size 152)
Myllokunmingiida
(tree size 7)
Loganellidae
(tree size 4)
Petromyzontida
Myllokunmingiformes
(tree size 1)