Note: This historical image is not a factually accurate paleontological restoration.
Reason: Amphibious lifestyle, unrealistically bendy neck, anachronistic since it never coexisted with humans.
You may ask further questions about the accuracy of this image at the image review page of Wikiproject Palaeontology on the English Wikipedia. Note that this image may be appropriate to illustrate obsolete paleontological views.
Summary
DescriptionWhen Dinosaurs Ruled the Earth (1970) trailer - Plesiosaurus 1.png
English: Screenshot from the trailer of When Dinosaurs Ruled the Earth
Note that it may still be copyrighted in jurisdictions that do not apply the rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50 p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.