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The 250 million year history of the crocodilians is the evolutionary success story.
No modern shark can compare to these amazing ancestors, and certainly none of these creatures could match the awesome Megatooth.
Scientists are looking at the real sea monsters of the past for clues that might answer the Loch Ness monster riddle.
Some 60 Million years ago, a strange and fierce bear like creature tested the waters of an ancient ocean, it's descendants - Whales and Dolphins.
While the dinosaurs ruled the earth, super giant squid, ancient sharks and 20 foot long crocodiles held sway in the seas.
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