Children (26 direct children, 43 direct and indirect children):
Phacops
(tree size 11)
Trimerocephalus
Acernaspis
(tree size 1)
Ananaspis
Chotecops
Denckmannites
Dianops
Dienstina
Drotops
(tree size 2)
Ductina
Eldredgeops
Eophacops
Illaenula
Kainops
(tree size 1)
Paciphacops
Toxophacops
Eocryphops
Afrops
Acuticryphops
Echidnops
Viaphacops
Phacopinae
Dalmanitina
(tree size 1)
Reedops
(tree size 1)
Babinops
Cryphops