This is Dimetrodon, the world’s top predator about 270 million years ago. Living before the dawn of the dinosaurs, this striking creature was actual a distant ancestor of mammals like us. Now we’ve ...
This is the skeleton of <i>Dimetrodon</i>, an ancient relative of mammals. New research suggests that at least some species of <i>Dimetrodon</i> were active at night (nocturnal).
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