The Jurassic Period is one of the three prehistoric geological periods of the Mesozoic Era. It spans from 145 million to 201 million years ago. This period was preceded by the Triassic Period and ...

A body fossil of a thorny-headed worm (Acanthocephala) has been dated to the Jurassic period, about 165 million years ago. It has characteristics of both Acanthocephala and tiny animals called ...

About 150 million years ago, the land that is now the western United States was alive with dinosaurs. New research shows that the smallest members of the biggest dinosaurs played a huge role in ...

What distinguishes the growth and development patterns of early mammals of the Jurassic period? Paleontologists have been able to gauge the lifespan and growth rates of these ancient animals, and even ...

Scientists have unearthed nearly 200 dinosaur footprints, dating back 166 million years to the Middle Jurassic Period, at Dewars Farm Quarry in Oxfordshire, England. The remarkable find, first spied ...

Baby long-necked dinosaurs might have been the fast food of the Jurassic Period. A detailed food web of the time, reconstructed from fossil data, shows that the young not-yet-giants almost ...

A new dinosaur species from the early Jurassic period was discovered in southwestern China, according to a study published Tuesday in the journal eLife. Scientists originally found remains of an ...