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(kl"n), n. pl.[NL., fr. Gr. chelw°nh a tortoise.] (Zol.) An order of reptiles, including the tortoises and turtles, peculiar in having a part of the vertebr, ribs, and sternum united with the dermal plates so as to form a firm shell. The jaws are covered by a horny beak. See Reptilia; also, Illust. in Appendix. スポンサード リンク
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