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
Horseshoe crab (Limulidae)
Children (2 direct children, 2 direct and indirect children):
Tachypleus gigas
Horseshoe crab
Tachypleus tridentatus
Tri-spine horseshoe crab