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Malacostraca
| Malacostraca | |
|---|---|
| |
| Eophreatoicus, a fresh water isopod from Australia. | |
| Scientific classification | |
| Kingdom: | |
| Phylum: | |
| Subphylum: | |
| Class: | Malacostraca Latreille, 1802
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| Subclasses | |
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Eumalacostraca | |
The Malacostraca (Greek: "soft shell") are the largest subgroup of crustaceans. They include decapods (such as crabs, lobsters and shrimp), stomatopods (mantis shrimp) and krill. There are 22,000 members in this group. It represents two thirds of all crustacean species. The first malacostracans appeared in the Cambrian period.[source?]
The classification of crustaceans is currently being debated. Some think Malacostraca is a class and others think it is a subclass.
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