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Reference Terms
from Wikipedia, the free encyclopedia

Paleozoic

The Paleozoic Era is a major division of the geologic timescale, one of four geologic eras.

Note:   The above text is excerpted from the Wikipedia article "Paleozoic", which has been released under the GNU Free Documentation License.
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March 22, 2025

Feathers, essential for thermoregulation, flight, and communication in birds, originate from simple appendages known as proto-feathers, which were present in certain dinosaurs.By studying embryonic development of the chicken, researchers from the ...
Modern humans descended from not one, but at least two ancestral populations that drifted apart and later reconnected, long before modern humans spread across the ...
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