Scorpions (Scorpiones) is a biological order of the phylum Arthropoda (Arthropods) and class Arachnida (Arachnids).
Bothriuridae
Buthidae
Chactidae
Chaerilidae
Diplocentridae
Euscorpiidae
Heteroscorpionidae
Ischnuridae
Iuridae
Microcharmidae
Pseudochactidae
Scorpionidae
Scorpiopidae
Superstitioniidae
Troglotayosicidae
Vaejovidae
Opiliones
Holothyrida
Ixodida
Mesostigmata
Palpigradi
Opilioacarida
Pseudoscorpiones
Ricinulei
Sarcoptiformes
Scorpiones
Schizomida
Araneae
Solifugae
Trombidiformes
Uropygi
Amblypygi