ANTARCTICA AS A CENTER OF ORIGIN OF BIRDS
With the rapid evolution of reptilian forms during Triassic and Jurassic times, many reptilo-avian forms may have evolved. Two examples of such evolution have been preserved in the Jurassic sediments of Germany (Archaeopteryx and Archaeornis). An anatomical feature, characteristic of birds, and not...
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Format: | Text |
Language: | English |
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Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.508.509 |