| 单词 | Palaeocopida | 
| 释义 | Palaeocopida [¦pāl·ē·ō`käp·ǝ·dǝ]  PALEONTOLOGY An extinct order of crustaceans in the subclass Ostracoda characterized by a straight hinge and by the anterior location for greatest height of the valve.  | 
	
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