- Chelicerata, superclass Chelicerata - spiders; scorpions; horseshoe crabs
--1 is a kind of class
--1 is a member of Arthropoda, phylum Arthropoda
--1 has members:Arachnida, class Arachnida; Pycnogonida, order Pycnogonida; Merostomata, class Merostomata