The Cretaceous Period and the Aftermath Imagine a great, thickly muscled dinosaur. Got it? See those serrated teeth? And the great yellow eye that is pondering whether you are food or foe? Now, imagine something that can kill this beast

Four and a half billion years ago, the debris and dust left from the formation of the sun coalesced to form our home planet. 3. 5 billion years ago, the first living organisms appeared on Earth. About 230 million years

Paleontologist John Scannella observed: “It is hard to walk out into the Hell Creek Formation and not stumble upon a Triceratops weathering out of a hillside. ” Forty-seven complete or partial skulls were discovered in just that area during the decade 2000–2010. [7] Specimens representing

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