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单词 θ37895
释义
the world > animals > reptiles > extinct reptiles and dinosaurs > [noun] > proavian (between fossil reptile and fossil bird) (2)
proavis1907

= proavian, n.

proavian1926

A proavian animal. Cf. earlier proavis, n., and protobird n. at proto-, comb._form affix 2a.

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