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Researchers, led by paleontologist Rob Gay, have discovered what may be one of the world's richest caches of Triassic period fossils at an extensive site within the original boundaries of Bears Ears National Monument. The team's initial excavation led to the extraordinary discovery of several intact remains of crocodile-like animals called phytosaurs. The findings were publicly announced at this week's Western Association of Vertebrate Paleontologists (WAVP) annual conference where researchers warned of a growing threat to their work in the region.
By Tim Radford
Think of it as the day a comet set the earth on fire. Researchers have evidence of widespread and devastating forest fires around half the world—a blaze to blot out the light of the sun—and all of it at a geological boundary called the Younger Dryas, 13,500 years ago.
The evidence, they say, supports the hypothesis that planet Earth sailed through a cloud of shattered cometary dust and stones, and the atmospheric violence that followed was enough to set light to accumulated forest timber, peat and grasses across the Americas, Europe and western Asia.