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
Children (3 direct children, 3 direct and indirect children):
Boothiaspis ovata
Boothiaspis alata
Boothiaspis angusta