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They're more like cousins than siblings.
These fearsome predators, encased in bony armor, are threatened with extinction.
It was more than 300 million years ago that reptiles made tracks on earth. The exact moment when this happened is unknown, however; oh, and by exact moment, I’m talking about pinning it down to a couple million years (you gotta love geologists for their sense of time). So, a discovery of fossilized footprints was […]
