Answer:
most common samples used today Blood and Hair
Answer:
No because Trilobites are older because they are in the deepest rock layer and the dinos aren't plus Two species of trilobites found in the Southwestern United States. Trilobites went extinct 250 million years ago, long before the appearance of the first dinosaurs.
Explanation: because i love talking about fossils
I really don't now I now it but I forgot Okk and thank u buy