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
Eurypterid (Eurypterida)
Stylonurina
Rhenopteroidea
Rhenopteridae (1645821)
Children (3 direct children, 3 direct and indirect children):
Rhenopterinae
Brachyopterus
Rhenopterus