Answer:
Yes
Explanation:
Yes, Radioactive uranium-235 has a half-life of 704 million years. If it was incorporated into dinosaur bones, it could it be used to date the dinosaur fossils.
It is worthy to note that after 65.5 million years a little as a tenth of the Uranium-235 undergoes degradation with the remaining ninety percent or part is available for use to date the fossils.