资讯
25 天
Live Science on MSNBirds have been nesting in the Arctic Circle for almost 73 million years, newly discovered ...A major collection of more than 50 bird fossils found in northern Alaska suggest some ancient ancestors of modern birds learned to either adapt to the harsh Arctic winter, or migrate south during the ...
Talking to reporters in Washington, DC yesterday, the scientists said the Gansus (Gansus yumenensis), a loon-like ancient bird, was one of the oldest members of the lineage leading to modern birds.
The time-calibrated tree of 124 avian species demonstrates the phylogenetic relationships of modern birds. CHINA DAILY The researchers extracted DNA-sequence data from 25,640 genetic loci ...
With the creature’s head tucked over its limbs and tail snugly wrapped around its body, its cozy posture resembled those of modern birds at rest, hinting that these dinosaurs didn’t just look ...
Scientists were finally given access to a remarkable Archaeopteryx fossil that’s allowed them to better understand exactly ...
4月
Daily Galaxy on MSNPaleontologists Discovered the Oldest Modern Bird Ever Found, Which Might Have Shared the ...Now, a new fossil discovered in 2011 and analyzed in a recent study published inNature appears to provide the missing link. The well-preserved skull reveals key bird-like features, including a ...
But not all the birds alive at the time made it. Why the ancestors of modern birds lived while so many of their relatives died has been a mystery that paleontologists have been trying to solve for ...
Modern birds capable of flight all have a specialized wing structure called the propatagium without which they could not fly. The evolutionary origin of this structure has remained a mystery ...
A Chicago fossil of Archaeopteryx uncovers unknown features, supporting theories of bird evolution from dinosaurs and highlighting its unique flight adaptations.
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