Arachnids are a cless (Arachnida) o jynt-legged invertebrate animals in the subphylum Chelicerata.

Arachnids
Temporal range: 430–0 Ma
Early Silurianpresent
"Arachnida" frae Ernst Haeckel's Kunstformen der Natur, 1904
Scientific classification e
Kinrick: Animalia
Phylum: Arthropoda
Subphylum: Chelicerata
Cless: Arachnida
Lamarck, 1801
Orders

Acarina
Amblypygi
Araneae
†Haptopoda
Opiliones
Palpigradi
†Phalangiotarbida
Pseudoscorpionida
Ricinulei
Schizomida
Scorpiones
Solifugae
Thelyphonida
†Trigonotarbida