Biology, 08.04.2020 04:43, jackphilander2285

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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?
•
Trilobites existed before jellyfish and ammonites.
Jellyfish existed before trilobites and ammonites.
Ammonites existed before trilobites and jellyfish.
Jellyfish, trilobites, and ammonites lived together

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Unit Test Review
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In rock layers, jellyfish fossils are found lowe...