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EntityQ929163· pop 34· linked from 96 articles

Astacidea is an infraorder of decapod crustaceans including lobsters (but not "lobsters" such as the spiny lobster etc.), crayfish, and their close relatives.

Species

crawfish

Infraorder

  1. PhylumArthropoda
  2. ClassMalacostraca
  3. OrderDecapoda
Habitatmarine, brackish, freshwater

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Wikidata facts

Image
Crayfish.jpg
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Commons category
Astacidea
taxon name
Astacidea
taxon common name
Crayfishes and Lobsters
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Article

5 sections
Contents
  • Description
  • Distribution
  • Classification
  • Taxonomy
  • References

Astacidea is an infraorder of decapod crustaceans including lobsters (but not "lobsters" such as the spiny lobster etc.), crayfish, and their close relatives.

==Description== The Astacidea are distinguished from most other decapods by the presence of chelae (claws) on each of the first three pairs of pereiopods (walking legs), the first of which is much larger than the remaining two pairs. The last two pairs of pereiopods are simple (without claws), except in Thaumastocheles, where the fifth pereiopod may have "a minute pincer".

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