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Biology 19 Online
OpenStudy (anonymous):

In rock layers, jellyfish fossils are found lower than trilobite fossils, and trilobite fossils are found lower than ammonite fossils. What can be determined from this information?

OpenStudy (anonymous):

If the formation has not undergone any turn over events, the deeper layers are older rocks. So, as one goes from the surface towards the core of Earth, the rocks get older and older. You should be able to answer the question with that info. @mikey56925692

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