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News Release 15-067
Big dinosaurs steered clear of the tropics
Climate swings lasting millions of years too much for dinos
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Some 212 million years ago, landscapes weren't all dinosaur-friendly: dry, hot, with wildfires.
Credit: Victor Leshyk
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The multi-colored slope-forming rocks of the Chinle Formation at Ghost Ranch, New Mexico.
Credit: Randall Irmis
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Scientist Randall Irmis taking notes, and rock samples for extraction of pollen and spores.
Credit: Nathan Smith
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Geoscientists Jessica Whiteside and Maria Dunlavey taking rock samples at Ghost Ranch.
Credit: Randall Irmis
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Looking back millions of years: Crews excavating fossils from Hayden Quarry at Ghost Ranch.
Credit: Randall Irmis
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A 212-million-year-old leg bone of a small, uncommon early carnivorous dinosaur encased in rock.
Credit: Randall Irmis
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