Chelicerata

The subphylum (or phylum^[1]) Chelicerata (/kəˌlɪsəˈreɪtə/ 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.

Chelicerata Temporal range: Middle Cambrian–Present, 508 – 0 Mya PreЄ Є O S D C P T J K Pg N
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
Kinrick:	Animalia
Phylum:	Arthropoda
Clade:	Arachnomorpha
Subphylum:	Chelicerata Heymons, 1901
Groups
†Sanctacarididae Pycnogonida Euchelicerata †Dibasterium †Offacolidae Prosomapoda
Synonyms
Cheliceriformes Schram an Hedgpeth, 1978