Children (10 direct children, 33 direct and indirect children):
Palanasaspis
Protaspididae
(tree size 1)
Pteraspidae
(tree size 9)
Psammosteida
(tree size 1)
Protopteraspididae
(tree size 2)
Pteraspididae
(tree size 7)
Doraspididae
(tree size 1)
Lamiaspis
Pteraspidoidei
(tree size 2)
Anchipteraspididae