Not a stupid question at all! You just have to reset over and over the same one. Just make sure you save right before you speak to the scientist and he tells you that he had already extracted the Pokémon from the fossil.
@@ShinyHunterCrob gotcha, that works!! Thanks for letting me know! I was worried I’d have to collect that many fossils over and over again 😂 I recently got Cyndaquil after 7231 resets so I thought Kabuto would be a fantastic addition to my team! Just gotta restore the fossil over and over again :,)