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Physical sciences/Earth sciences/Geology/Geologic history/Geologic periods/Mesozoic era/Jurassic period

The new finds from two sites in Russia suggest that all major groups of dinosaurs may have had at least a few feathered species.

A rose by any other name would smell as sweet; the saying is perhaps a testament to the acute sense of smell that is unique to mammals. Paleontologists have now discovered that an improved sense of smell jump-started brain evolution in the ancestral cousins of present-day mammals. The research appears in the 20 May issue of the journal Science.