in rock layers, jellyfish fossils are found lower than trilobite fossils, and trilobite fossils are found…

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?\ntrilobites existed before jellyfish and ammonites.\njellyfish existed before trilobites and ammonites.\nammonites existed before trilobites and jellyfish.\njellyfish, trilobites, and ammonites lived together.
Answer
Brief Explanations:
In rock - layer analysis, lower - lying fossils are generally older. Since jellyfish fossils are lower than trilobite fossils and trilobite fossils are lower than ammonite fossils, jellyfish existed before trilobites and ammonites.
Answer:
Jellyfish existed before trilobites and ammonites.