 archaeopteryx |
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| 1. | [ noun ] (zoology) extinct primitive toothed bird of the Upper Jurassic having a long feathered tail and hollow bones; usually considered the most primitive of all birds | |
| Synonyms: | Archaeopteryx_lithographica archeopteryx | |
| Related terms: | bird genus_Archaeopteryx | |
| Similar spelling: |
archeopteryx archaeobacteria archaebacteria archaebacterium |
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