an animal kindove like the loch ness monster that is now most likely extinct, but matches a perfect description of the bear lake monster (or says some blogs, but i think other wise)
Yes, the noun 'plesiosaurs' is a common noun, a general word for a type of extinct, marine reptile; a word for any plesiosaurs.
Yes it was.
There were two main kinds of plesiosaurs. The most famous, the long necked plesiosaurs, ate fish and other small marine animals. Lesser known are the short necked plesiosaurs, which looked similar to gigantic crocodiles and ate larger marine animals.
It was herbivorous
No one knows how long it lives for
First off, plesiosaurs and pterodactyl were not dinosaurs. Plesiosaurs were their own group of reptiles more closely related to lizards than to dinosaurs. Pterodactyl was a pterosaur, which were a group separate from, but related to dinosaurs. Plesiosaurs are generally considered to have been discovered by Mary Anning. Pterosaurs are said to have been discovered by Cosmio Collini.
Sauropods didn't, but plesiosaurs did. Both had long necks
i think that the plesiosaurs lived in a big ocean
there were the t-rex, Plesiosaurs, and Dilophosaurus Wetherilli
The plesiosaurs were the top predators of the food chain at that time
Icthyosaurs and plesiosaurs are referred to as marine reptiles. They were not closely related.
No plesiosaurs are not dinosaurs. Besides, there's no real evidence that it exists.