This is a sentence fragment, because it is incomplete, it needs to be completed in order to be a sentence.
One of the early dinosaur fossils that were discovered was the pterodactyl and it was believed to be what a mad man said he had seen .he called it a dragon but he was disproven when he said it had a different structure
Or so it is believed
Answer:
Usefulness or uses
Explanation:
Makes sense grammatically and logivally.
Answer: Objective
Explanation: Because you have to restate the facts you just presented and show you know what your doing/talking about.
Hope this helps (:
