单词	Rudista
释义	Rudista plural noun Ru·​dis·​ta rüˈdistə in some classifications : a division of Eulamellibranchia comprising extinct chiefly Cretaceous bivalve mollusks with one valve elongate, conical, and thick-shelled and the other small and fitting like a lid on the first rudistan (ˈ)⸗¦⸗stən adjective or noun rudistid (ˈ)⸗¦⸗stə̇d adjective or noun Word History Etymology New Latin, from Latin rudis rude, raw + -ista -ist
随便看	spiny-head spiny-headed worm spiny-herb spiny-rayed spiny-skinned Spio spionid spir spir- spirable spiracle spiracles spiracula spiracular spiraculum spiraea spiraeae spiraeas spiral spiral axis spiral bandage spiral bevel gear spiral binding spiral chute spiral cleavage

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