“Palaechinoida”的概念、定义、翻译、参考文献-科学参考

单词	Palaechinoida
释义	Palaechinoida [¦pāl·ē·kī`nȯid·ē·ǝ] ^PALEONTOLOGY An extinct order of echinoderms in the subclass Perischoechinoidea with a rigid test in which the ambulacra bevel over the adjoining interambulacra.
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