Question

select the correct answer from the dropdown menu. according to the fossil record, trilobites lived ______ dinosaurs. assume no overturning took place. image shows rock layers with fossil of a scallop and fossil of a dinosaur, and a dropdown menu with options

Explanation:

In rock - layer dating (with no overturning), the principle of superposition states that in undisturbed rock layers, older layers are at the bottom and younger layers are on top. The scallop fossils are in a layer that is below the layer with dinosaur fossils. So, scallops lived before dinosaurs.

Answer:

before