| archaeopteryx | <paleontology> A fossil bird, of the Jurassic period, remarkable for having a long tapering tail of many vertebrae with feathers along each side, and jaws armed with teeth, with other reptilian characteristics. Origin: Gr. Ancient + wing. Source: Websters Dictionary (01 Mar 1998) |
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| archaeopteryx | extinct primitive toothed bird of the Upper Jurassic having a long feathered tail and hollow bones |
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| archaeopteryx | extinct primitive toothed bird of the Upper Jurassic having a long feathered tail and hollow bones |
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