Ateam of archaeologists excavating a sedimentary rock layer come across some primitive hunting tools used by early humans. as the dig progresses, they unearth the fossilized remains of dinosaur from another layer of the sedimentary rock. why do these discoveries indicate that the rocks were formed over millions of years

A team of archaeologists excavating a sedimentary rock layer come across some primitive hunting tools used by early humans. As the dig progresses, they unearth the fossilized remains of a dinosaur from another layer of the sedimentary rock. Why do these discoveries indicate that the rocks were formed over millions of years?

C) Dinosaurs became extinct millions of years before humans appeared.

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation: