Back Krap Afrikaans ሠርጣን Amharic Kalang AMI Crabba ANG कौकङा ANP سرطان (حيوان) Arabic سرطان (تحت رتبه من لينات الدرقه) ARZ Brachyura AST Yengəclər Azerbaijani Kasag BCL
| Crab Temporal range:
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|---|---|
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| Top row, left to right: Dromia personata (Dromiidae), Dungeness crab (Cancridae), Tasmanian giant crab (Menippidae); Middle row: Corystes cassivelaunus (Corystidae), Liocarcinus vernalis (Portunidae), Carpilius maculatus (Carpiliidae); Bottom row: Gecarcinus quadratus (Gecarcinidae), Grapsus grapsus (Grapsidae), Ocypode ceratophthalmus (Ocypodidae). | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Malacostraca |
| Order: | Decapoda |
| Suborder: | Pleocyemata |
| (unranked): | Reptantia |
| Infraorder: | Brachyura Linnaeus, 1758 |
| Sections and subsections[1] | |
Crabs are decapod crustaceans of the infraorder Brachyura, which typically have a very short projecting tail-like abdomen, usually hidden entirely under the thorax (brachyura means "short tail" in Greek).[a] They live in all the world's oceans, in freshwater, and on land, are generally covered with a thick exoskeleton, and have a single pair of pincers on each arm. They first appeared during the Jurassic period, around 200 million years ago.
- ^ De Grave, Sammy; Pentcheff, N. Dean; Ahyong, Shane T.; et al. (September 15, 2009). "A Classification of Living and Fossil Genera of Decapod Crustaceans" (PDF). Raffles Bulletin of Zoology. Suppl. 21: 1–109. Archived from the original (PDF) on June 6, 2011. Retrieved January 3, 2024.
- ^ Henry George Liddell; Robert Scott. "βραχύς". A Greek–English Lexicon. Perseus Digital Library. Retrieved May 24, 2010.
- ^ Henry George Liddell; Robert Scott. "οὐρά". A Greek–English Lexicon. Perseus Digital Library. Retrieved May 24, 2010.
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