Carbon dating not used date dinosaurs

The sediment of this area was laid down after ammonite A appeared 199 million years ago, and before ammonite B became extinct 195 million years ago.This is because new sediments are always laid down on top of sediments that have already been deposited.

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The second method is called absolute dating and is done by analysing the amount of radioactive decay in the minerals of the rocks.

Scientists find out the age of a dinosaur fossil by dating not only the rocks in which it lies, but those below and above it.

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