Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. Living Organisms (hierarchy name)
4. living organisms (entities)
5. Eukaryota (domain)
6. Animalia (kingdom)
7. Arthropoda (phylum)
8. Crustacea (subphylum)
9. Malacostraca (class)
10. Decapoda (order)

Anotations

Scope note:

Members of a infraorder containing ten-legged crustaceans having relatively short tails that are curled under the thorax, or midsection, a broad thick exoskeleton, and a first pair of legs that is modified into pincers. The common term "crab" is sometimes part of the name of other crustaceans and insects, such as hermit crabs or lice, that resemble true crabs.