By examining rocks in which dinosaur fossils were found, scientists have determined that different species of North American dinosaurs occupied different environments during the Late Cretaceous period 65 million years ago.
According to the research, Hadrosaurs or duck-billed dinosaurs, along with the small ornithopod Thescelosaurus, preferred to live along the edge of rivers. While Ceratopsians, which include the well-known Triceratops, preferred to be several miles inland.
The findings, which appear in the online edition of the Proceedings of the Royal Society B, give scientists a more complete picture of the distribution of different species and help explain how several large herbivores managed to coexist.
Source: http://www.sciencedaily.com/
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