The Triceratops, described in the latest Royal Society Biology Letters, dates to 65 million years ago, the critical period of time associated with the Cretaceous-Tertiary (K-T) extinction event that wiped out all non-avian dinosaurs and many other animals and plants.
Since this rhinoceros-looking, three-horned dinosaur lived so close to the mass extinction moment, it could negate an earlier theory that dinosaurs gradually died out before 65 million years ago.
"Our paper suggests that dinosaurs did not go extinct prior to the impact," lead author Tyler Lyson told Discovery News. "The fact that this dinosaur is so close to the K-T boundary lends support to the idea that they went extinct as a result of a meteorite impact."
Born, like other comic book characters, out of an otherwise trivial but life-changing animal bite, the Rabid Librarian seeks out strange, useless facts, raves about real and perceived injustices, and seeks to meet her greatest challenge of all--her own life.
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Tuesday, July 12, 2011
Bolstering the meteorite extinction theory
Triceratops Was Last Dinosaur Standing: The 65 million-year-old find suggests a meteor may have wiped out the dinosaurs in a sudden catastrophic event
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Dinosaurs
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