Jurassic
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Template:Stub According to geologists, who believe in the theory of evolution and/or an Earth that is billions of years old, the Jurassic epoch (period of time) dated from 203 million years ago to 146 million years ago. In the evolutionary science timeline of Earth's natural history, the Jurassic period was between the Triassic and before the Cretaceous Periods.
Sauropods such as Diplodocus were supposedly common during this period.