Astacidea
| Astacidea Temporal range:  Middle Permian - present | |
|---|---|
| Adriatic lobster | |
| Crayfish: Austropotamobius pallipes | |
| Scientific classification | |
| Domain: | Eukaryota | 
| Kingdom: | Animalia | 
| Phylum: | Arthropoda | 
| Class: | Malacostraca | 
| Order: | Decapoda | 
| Suborder: | Pleocyemata | 
| Clade: | Reptantia | 
| Infraorder: | Astacidea Latreille, 1802 | 
| Superfamilies | |
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Astacidea is an infraorder of decapod crustaceans including lobsters (but not "lobsters" such as the spiny lobster etc.), crayfish, and their close relatives.