| 单词 | Holectypina | 
| 释义 | Holectypinaplural noun  Ho·lec·ty·pi·na   hōˌlektəˈpīnə   : a suborder of extinct sea urchins (order Exocycloida) having a central peristome, an excentric periproct, an Aristotle's lantern, and nonpetaloid ambulacra and found in Jurassic, Cretaceous, and Eocene strata   | 
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