Rise of dinosaurs not so rapid after all.

I didn't want to let this press release from researchers in Integrative Biology at UC Berkeley slip by. They showed, for the first time, that dinosaurs and their non-dinosaur ancestors lived side by side for tens of millions of years, disproving the notion that dinosaurs rapidly replaced their supposedly outmoded predecessors.

The finds, including fossil bones of a new dinosaur predecessor the researchers have named Dromomeron romeri, are described in a cover story in the July 20 issue of Science.

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