The fossils help us figure it out. If we know when the fossilized animal lived, we know that the rock, or the layer in which the fossil was found, is about the same age. ... Limestone: That's right. In fact, that's one way that scientists determined my age.
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The fossils help us figure it out. If we know when the fossilized animal lived, we know that the rock, or the layer in which the fossil was found, is about the same age. ... Limestone: That's right. In fact, that's one way that scientists determined my age.