The subphylum (or phylum[1]) Chelicerata (/kəˌlɪsəˈrtə/ or /kəˌlɪsəˈrɑːtə/; New Laitin, frae French chélicère, frae chél "claw, chela" an -cère frae the Greek keras, meanin "horn") constitutes ane o the major subdivisions o the phylum (or superphylum[1]) Arthropoda, an includes horseshae crabs, scorpions, speeders, mites, harvestmen, ticks, an Solifugae.

Temporal range: Middle CambrianPresent, 508 – 0 Mya
A collection o modren an extinct chelicerates. Clockwise frae tap left: a sea speeder, Pentecopterus (an extinct eurypterid), a spiny orb-weaver an an Atlantic horseshae crab.
Scientific classification e
Kinrick: Animalia
Phylum: Arthropoda
Clade: Arachnomorpha
Subphylum: Chelicerata
Heymons, 1901
  • Cheliceriformes Schram an Hedgpeth, 1978


  1. a b Margulis, Lynn; Schwartz, Karlene (1998), Five Kingdoms, An Illustrated Guide to the Phyla of Life on Earth (third ed.), W.H. Freeman and Company, ISBN 0-7167-3027-8