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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 ...
Ancient fossils from Alaska reveal birds nested in the Arctic 73 million years ago, challenging previous assumptions about ...
There are more than 1,200 members in the Santa Clara Valley Bird Alliance, where birders are turning a hobby into a lifestyle ...
Among these flying birds, also known as pterosaurs, which one was the most dangerous? According to pteros.com, Hatzegopteryx ...
Though he didn’t know it at the time, the little slab contained a tiny and perfect skull from the oldest direct relative of modern birds ever discovered, a fowl that walked the Earth with dinosaurs.
The bird fossils are part of the museum's collections. "The Arctic is considered the nursery for modern birds," he said. "It's kind of cool when you go to Creamer's Field [a Fairbanks-area ...
The new species, Archaeornithura meemannae, belonged to the group that gave rise to modern birds, and pushes back their earliest known appearance by five million years. Elizabeth Quill | Read More ...
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 ...
At the bottom right are birds within or very similar to neornithes, the group containing all modern birds. On the bottom left are ichthyornithes, a group of gull-like birds. In the top left are ...
The bird fossils are part of the museum's collections. "The Arctic is considered the nursery for modern birds," he said. "It's kind of cool when you go to Creamer's Field [a Fairbanks-area ...
The fossil assemblage, uncovered from the Late Cretaceous Prince Creek Formation in Alaska, includes a diverse group of ornithurine birds – relatives of modern species – along with rare ...
On the younger, black-rock islands of the Galápagos archipelago, wild-growing tomatoes are doing something peculiar. They're shedding millions of years of evolution, reverting to a more primitive ...
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