Kabutops is the evolved form of Kabuto, a fossil Pokémon. While you can find fossils in Pokémon Crystal, they don't yield Kabuto.
Here's the breakdown:
* Fossil types in Crystal: You can find the Helix Fossil and the Dome Fossil.
* Fossil evolution: The Helix Fossil evolves into Omanyte, which then evolves into Omastar. The Dome Fossil evolves into Aerodactyl.
* No Kabuto in Crystal: Kabuto and Kabutops are not available in Pokémon Crystal.
To get Kabuto and Kabutops, you would need to play Pokémon Gold or Silver, where you can find the Old Amber fossil which evolves into Kabuto.