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Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Deuterostome (Deuterostomia)
Chordata (Chordates)
Olfactores
Craniata (Craniata (chordata))
Vertebrata (Animals with backbone)
Pteraspidomorphi
Heterostraci
Cyathaspidida

Ctenaspididae (25398789)

Children (4 direct children, 11 direct and indirect children):

Boothiaspis (tree size 3)

Allocryptaspis (tree size 3)

Arctictenaspis

Zaphoctenaspis (tree size 1)