Related how?

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)
Gnathostomata (Gnathostome)
Chondrichthyes (Cartilaginous fishes)
Holocephali

Holocephalimorpha (12071143)

Children (7 direct children, 28 direct and indirect children):

Cochliodontiformes (tree size 10)

Echinochimaera

Menaspidae

Chondrenchelyiformes (tree size 4)

Psammodontiformes (tree size 5)

Copodontiformes (tree size 1)

Harpacanthus (tree size 1)