Ascothoracida
| Ascothoracida | |
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Ascothoracida
Lacaze-Duthiers, 1880 [1]
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| Orders and families [2] | |
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Dendrogastrida Grygier, 1987
Laurida Grygier, 1987
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Ascothoracida is a small group of crustaceans, comprising around 100 species.[3] They are found throughout the world, and are parasites on cnidarians and echinoderms.[4]
Ascothoracida was previously ranked as an order within the infraclass Cirripedia (barnacles), but now considered a separate infraclass.[2] Those two infraclasses, along with Facetotecta, together make up the subclass Thecostraca.[2]
The thorax has six pair of biramous appendages, while the abdomen has four segments and a terminal telson with a caudal furca.[5] This arrangement is similar to that seen in copepods.[5] In addition, there is a bivalved carapace, which is expanded in females.[5]
References
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- ↑ 2.0 2.1 2.2 Lua error in package.lua at line 80: module 'strict' not found.
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External links
Data related to Ascothoracida at Wikispecies
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