Related how?

Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Nephrozoa (Eubilateria)
Protostome (Protostomia)
Ecdysozoa (Ecdysozoan)
Panarthropoda
Tactopoda
Arthropoda (Arthropod)
Chelicerata (Chelicerates)
Euchelicerata
Prosomapoda
Merostomata (Horseshoe crabs)
Xiphosura
Xiphosurida
Planaterga
Dekatriata
Sclerophorata
Arachnida (Arachnids)
Dromopoda
Scorpion (Scorpions)
Branchioscorpionina

Meristosternina (20017203)

Children (4 direct children, 17 direct and indirect children):

Cyclophthalmoidea (tree size 4)

Palaeobuthoidea (tree size 1)

Tiphoscorpionoidea (tree size 1)

Branchioscorpionoidea (tree size 7)