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Message: Oldest Dinosaur found in Canada.
I didn't know they were looking for me.
8 May 2013 Last updated at 06:29 ET
Ancient bone-headed dinosaur found
By Helen Briggs BBC News
Reconstruction of Acrotholus audeti
Scientists have unveiled a new species of bone-headed dinosaur, which they say is the oldest in North America, and possibly the world.
The dog-sized plant-eater had a dome-shaped skull that may have been used to head-butt other dinosaurs.
University of Toronto researchers say the new species, revealed in the journal Nature Communications, fills in gaps in the dinosaur family tree.
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