A term used to refer to a species of animal that is still alive today but is or was thought to have become extinct. Maurice Burton wrote that "a living fossil is an organism that has survived beyond its era". The most famous example of a living fossil is the Coelacanth which was thought to have been extinct for millions of years until a live one was caught in the 1930s.
Stories of dinosaurs and other prehistoric creatures have been reported in remote parts of the world for years leading to speculation by cryptozoologists that small populations of these animals could have survived to the present day. The depths of the sea could easily hold many more surprises from the distant past.
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