Canadian researchers say they have found the smallest meat-eating dinosaur yet discovered in North America.
Canadian researchers say they have found the smallest meat-eating dinosaur yet discovered in North America.
This mini-cousin of velociraptor, weighing in at 4-to-5 pounds (2 kilograms) "probably hunted and ate whatever it could for its size -- insects, mammals, amphibians and maybe even baby dinosaurs," according to Nicholas Longrich of the University of Calgary.
The creature lived 75 million years ago in the swamps and forests of southern Alberta, Longrich and colleague Philip J Currie report in today's edition of Proceedings of the National Academy of Sciences.
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There has been plenty of evidence for large and medium-size dinosaurs in North America, but not small ones, Longrich said in a telephone interview. Now researchers see there was a dinosaur filling that niche also.
The bones of the small raptor were discovered among fossils that had been collected a quarter-century ago and remained in a museum drawer, Longrich explained. Similar small dinos have been uncovered in China in the last few years, and studying those helped the researchers identify this North American version.
"It was hard to tell because it was still encased in rock," Longrich said. "It is only because I had been studying the Chinese dinosaurs I could tell what it was."
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