Back Krewe Afrikaans استاسيديا ARZ Xərçənglər Azerbaijani Astacideus Catalan ᏥᏍᏛᎾ CHR Großkrebse German Astacidea Spanish خارچنگیان Persian Pitkäpyrstöiset ravut Finnish Astacidea French
| Astacidea Temporal range: Middle Permian - present
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| Adriatic lobster | |
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| Crayfish: Austropotamobius pallipes | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Decapoda |
| Suborder: | Pleocyemata |
| (unranked): | Reptantia |
| Infraorder: | Astacidea Latreille, 1802 |
| Superfamilies | |
Astacidea is an infraorder of decapod crustaceans including lobsters (though not "lobsters" such as the spiny lobster etc.), crayfish, and their close relatives.