No one knows how long it lives for
i think that the plesiosaurs lived in a big ocean
Yes, the noun 'plesiosaurs' is a common noun, a general word for a type of extinct, marine reptile; a word for any plesiosaurs.
They include Ankylosaurs (the armored dinosaurs), Mosasaurs, and Plesiosaurs (both marine reptilian groups).
Ichthyosaurs and plesiosaurs were both marine reptiles, but they belong to different groups and have distinct characteristics. Ichthyosaurs resembled modern dolphins with streamlined bodies and long snouts, adapted for fast swimming, while plesiosaurs had broad bodies, short necks, and large flippers, often associated with a more buoyant, graceful swimming style. Additionally, ichthyosaurs gave birth to live young, whereas plesiosaurs laid eggs. These differences reflect their adaptations to different ecological niches in the prehistoric oceans.
No, plesiosaurs looked like fish but were reptilian. They had to breathe air and fossil evidence shows they gave birth to live young.
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.
No dinosaurs lived in water. The prehistoric reptiles that lived in water were the Plesiosaurs, not dinosaurs.
It was herbivorous
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.
Animal life was then dominated, by large archosaurian reptiles: dinosaurs, pterosaurs, and aquatic reptiles such as ichthyosaurs, plesiosaurs, and mosasaurs. the first birds and placental mammals also appeared