Tiny Fossil Leads To Discovery Of Ancient Shark Species That Lived In T-Rex’s World

The Cretaceous period, particularly the latter half of it, is what many of us may think of as the 'T-Rex era.' It is indeed the specific tract of the Earth’s history in which those massive, predatory dinosaurs were most likely to exist. https://www.evolving-science.com/information-communication/ancient-shark-00910

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