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Monday, July 26, 2010
A Fact On Dinosaurs
In Dixie National Forest, a 77-million-year-old dinosaur graze mark and scratched-out digging traces were discovered next to a series of mammal burrows by Edward Simpson and his colleagues, a geologist at Kutztown University in Pennsylvania.
New Scientist quoted Simpson as says “It appears a dinosaur was digging down and trapping rodent-like mammals in a similar way to coyotes hunting around prairie dog burrows today.”
The size and curving of the claw indicate that it was a maniraptoran theropod - carnivorous dinosaurs including velociraptors and the associates of modern birds among their ranks.
The traces were conserved when sand was suddenly dumped onto the burrows during a flood. It is published in Geology.
Labels: carnivorous, Dinosaur, mammals, theropod, velociraptors
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