What taxonomic order contains all true scorpions?

The taxonomic order containing all true scorpions is Scorpiones.

Scorpiones is an order within class Arachnida, the broader group that also includes spiders, ticks, mites, harvestmen, and several less familiar lineages. Scorpions are distinguished by their pincers, segmented abdomen, and venomous tail ending in a stinger. Their bodies and appendages reflect a long history as terrestrial predators.

The order includes living scorpion families such as Buthidae, Scorpionidae, and Euscorpiidae, as well as extinct members known from the fossil record. Modern classifications recognize roughly 1,400 described species, although the total changes as researchers revise species boundaries and discover new ones.

Scorpiones is often confused with names of other arachnid orders. Araneae contains spiders, Opiliones contains harvestmen, and Amblypygi contains tailless whip scorpions. Pseudoscorpions are also arachnids, but they belong to a separate order, Pseudoscorpiones, and are not miniature true scorpions.