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Archaeopteryx 2
| | Birding - Recreation 1,800
Aves - Chordata, Animalia, Flora and Fauna, Biology, Science 1,485
Ornithology - Chordates, Zoology, Biology, Science 95
 Are Birds Really Dinosaurs?Are Birds Really Dinosaurs?
 A DinoBuzz article covering the theory, and objections towards it, of the dinosaurian origin of birds.
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BBC Science and Nature: GastornisBBC Science and Nature: Gastornis
 Provides an illustration and information on this fearsome bird, its description, distribution, behavior and history.
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Genera and Species of Paleocene BirdsGenera and Species of Paleocene Birds
 Provides details of the bird genera of this epoch that have been classified from their fossil record.
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PhorusrhacosPhorusrhacos
 Partial fossils of this bird have been found in Argentina dating back to 27 million years ago.
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