The half-life of the C-14 isotope is approximately 5730 years; as you can see, it is meant for the dating of the younger fossils ( up to 50,000 - 70,000 years old ).
Dinosaurs have been extinct for over 66 million years; for the fossil dating of such specimens, you generally compare the radioactive isotope decay of transuranic elements, such as Potassium-Argon.
Dinosaurs have been extinct for over 66 million years; for the fossil dating of such specimens, you generally compare the radioactive isotope decay of transuranic elements, such as Potassium-Argon.
Except in pure mathematics, nothing is known for certain (although much is certainly false).
Carl Sagan, "The Demon Haunted World"
Carl Sagan, "The Demon Haunted World"