A small team of biologists and animal movement specialists in the Netherlands and the U.K. has found that birds such as the emu have a grounded running style at medium speeds, allowing them to conserve energy compared to ...
Shortly after an asteroid slammed into Earth 66 million years ago, life for non-avian dinosaurs ended, but the evolutionary story for the early ancestors of birds began.
Evolution
Jul 31, 2024
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447
Humans have long been fascinated by bird song and the cacophony of other avian sounds—from coos and honks to quacks and peeps. But little is known about how the unique vocal organ of birds—the syrinx—varies from species ...
Plants & Animals
May 23, 2024
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416
The discovery of a spectacular fossil site in Argentina is helping shed new light on life at the end of the Cretaceous, the time period just before the non-avian dinosaurs went extinct.
Paleontology & Fossils
Oct 13, 2023
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260
Almost 66 million years ago, an asteroid struck the Earth, killing all non-avian dinosaurs and allowing mammals to dominate.
Evolution
Aug 17, 2023
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107
In recent research published by myself and my colleague Tony Yeates in the journal Tectonophysics, we investigate what we believe—based on many years of experience in asteroid impact research—is the world's largest known ...
Earth Sciences
Aug 10, 2023
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48
Non-avian dinosaurs were probably in decline long before an asteroid smashing into the Yucatan Peninsula 66 million years ago sealed their fate, according to a University of Alberta paleontologist who says the ancient tale ...
Evolution
May 24, 2023
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11
Paleontologists agree that a massive asteroid strike triggered the end of the dinosaurs, but a debate has persisted over the reptiles' overall state at the time of the fateful collision.
Paleontology & Fossils
Dec 25, 2022
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61
Jeholornis was a raven-sized bird that lived 120 million years ago, among the earliest examples of dinosaurs evolving into birds, in what's now China. The fossils that have been found are finely preserved but smashed flat, ...
Evolution
Oct 24, 2022
0
243
Spinosaurus is the biggest carnivorous dinosaur ever discovered—even bigger than T. rex—but the way it hunted has been a subject of debate for decades. It's hard to guess the behavior of an animal that we only know from ...
Paleontology & Fossils
Mar 23, 2022
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450
