It may be that he swept back into the past, and fell among the blood-drinking, hairy savages of the Age of Unpolished Stone; into the abysses of the Cretaceous Sea; or among the grotesque saurians, the huge reptilian brutes of the Jurassic times.
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Now they were facing something out of the Cretaceous period.
Micheal Scott -- The Alchemyst
Dinosaurs had died out in the Cretaceous period, sixty-five million years ago.