In the Early Jurassic, before the mass extinction event that brought about the demise of most dinosaurs, the ancestors of crocodiles had a whole bunch of relatives living in the sea.
, the newfound creature measured about 2 meters and possessed short limbs and a long, strong tail.
order. In fact, scientists don't really know where to place thalattosuchians in the tree of life. They could be a sister group to crocodylians, or an ancient radiation that branched off long ago. Based on the fossil's morphology compared to other ancient crocodylians and thalattosuchians, experts think thalattosuchians' ancestors arose around 200 million years ago, toward the end of the Triassic Era. That's about the same time that ancient crocodylians are thought to have appeared themselves.
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