Question

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?

Answer 1

first , knightia fish fossil

Answer 2

Explanation:

In rock layers, ‘jellyfish fossils’ are found lower than ‘trilobite fossils’, and ‘ammonite fossil’ are found higher than ‘trilobite fossils’ because the jellyfish has existed in a time older that of the trilobite and the trilobite has existed in a time which was older that of the ammonite.  

In these fossil excavation it is assumed that the organisms that are foliated are arranged from down to top that is the oldest existed organism lies beneath the newer organisms.