A prehistoric beast with a bony plate on its head lived 99 million years ago and may be the ancestor of today's crocodiles.<img src="http://feeds.feedburner.com/~r/DiscoveryNews-Top-Stories/~4/xAjqgUGDvb8" height="1" width="1"/>
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A prehistoric beast with a bony plate on its head lived 99 million years ago and may be the ancestor of today's crocodiles.<img src="http://feeds.feedburner.com/~r/DiscoveryNews-Top-Stories/~4/xAjqgUGDvb8" height="1" width="1"/>