ecosystem
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A tiny shark from the ancient past of the United States
Sixty-eight million years ago, a Tyrannosaurus rex died in a small river in what is now South Dakota, USA. Along with "Sue", the T. rex's skeleton, many other animals had pieces of their skeleton preserved in the same section of the river. The most recently... click to read more
Views 2716
Reading time 4 min
published on Nov 15, 2019
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