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The archenteron develops into
Flightless Birds
Birds that have evolved in such a way that they are unable to fly, often having smaller wing bones and a heavier, more robust body structure.
Biogeographical
Pertaining to the distribution of plants and animals in different regions and ecosystems across the world.
Cenozoic Era
The current geological era, beginning 66 million years ago, following the mass extinction of the dinosaurs and characterized by the rise of mammals.
Comparative Morphology
Scientific study of similarities and differences in body plans.
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