== Quando vissero? ==
They lived from the early Jurassic to the end of the Cretaceous period. That is from about 220 million years to about 65 million years ago. Plesiosaurs, like dinosaurs, lived in the Mesozoic era.
Dpve vivevano? ==
Some people think that they could climb out of the water and crawl around on land, like seals. But other scientists disagree with this. Either way they would have spent a lot of their time under water. And because they were air-breathing animals, they would have to come up to the water surface for air every now and then.
furono scoperti? ==▼
Their fossils were found in England, Germany, Japan, Australia and USA. They lived also in Manitoba, Canada
was discovered in
Mary Anning, in
== Come furono scoperti? ==
The first Plesiosaur was discovered in 1821 by Mary Anning, in England.
== Cosa non sappiamo ancora di loro? ==