This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Note: This historical image is not a factually accurate paleontological restoration.
Reason: Wrong proportions, Plesiosaurus's neck impossibly flexible and bendy, Temnodontosaurus and Plesiosaurus didn't have clawed feet in reality, pterosaurs shown are too dragon-like with incorrect bat wings, anachronism.
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
DescriptionGreat Sea-Dragons.jpg
Plesiosaurus battling Temnodontosaurus (Oligostinus), front piece the Book of the Great Sea-Dragons by Thomas Hawkins.
This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.
You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
Note that a few countries have copyright terms longer than 70 years: Mexico has 100 years, Jamaica has 95 years, Colombia has 80 years, and Guatemala and Samoa have 75 years. This image may not be in the public domain in these countries, which moreover do not implement the rule of the shorter term. Honduras has a general copyright term of 75 years, but it does implement the rule of the shorter term. Copyright may extend on works created by French who died for France in World War II (more information), Russians who served in the Eastern Front of World War II (known as the Great Patriotic War in Russia) and posthumously rehabilitated victims of Soviet repressions (more information).
{{Information |Description=Plesiosaurus battling Ichthyosaurus, front piece the Book of the Great Sea-Dragons. |Source=http://www.plesiosaur.com/database/references/sea-dragons/sea-dragons.pdf |Date=1840 |Author=Thomas Hawkins |Permission= |other_versions