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History
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Gansus
Gansus
Holotype foot, Paleozoological Museum of China
Holotype foot, Paleozoological Museum of China
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Archaeopteryx is often considered the oldest known true bird.
Archaeopteryx is often considered the oldest known true bird.
Anchiornis huxleyi is an important source of information on the early evolution of birds in the Late Jurassic period.
Anchiornis huxleyi is an important source of information on the early evolution of birds in the Late Jurassic period.
Confuciusornis sanctus, a Cretaceous bird from China that lived 125 million years ago, is the oldest known bird to have a beak.
Confuciusornis sanctus, a Cretaceous bird from China that lived 125 million years ago, is the oldest known bird to have a beak.
The range of the house sparrow has expanded dramatically due to human activities.
The range of the house sparrow has expanded dramatically due to human activities.