单词 | Peracarida |
释义 | Peracarida [´per·ǝ`kar·ǝ·dǝ] INVERTEBRATE ZOOLOGY A superorder of the Eumalacostraca; these crustaceans have the first thoracic segment united with the head, the cephalothorax usually larger than the abdomen, and some thoracic segments free from the carapace. |
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