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)
Euselachii (Sharks)
Elasmobranchii

Xenacanthiformes (119359)

Children (3 direct children, 18 direct and indirect children):

Xenacanthidae (tree size 10)

Orthacanthidae (tree size 3)

Diplodoselachidae (tree size 2)