Kabuto

Kabuto (カブト Kabuto) is a /-type Pokémon, and is a Fossil Pokémon. Not obtainable in the wild, Kabuto can only be obtained by resurrecting it from a Dome Fossil. It can evolve into Kabutops starting at level 40. Unlike the DS Pokemon Games, Kabuto can only be found once in a very little amount of games.

Appearance
While concealed, Kabuto leaves exposed only its hard shell, which protects it from predators, while the small black eyes on its back allow it to continue monitoring its surroundings. If it is flipped upside down, it becomes helpless and defenseless as it is unable to flip over on its own. It may be based of a Trilobite.

Trivia

 * Kabuto's design was inspired by the real-world Limulidae (also known the Horseshoe Crab) which are considered living fossils since they have undergone little to no changes in appearance over the past millions of years. However, unlike Kabuto, Limulidae are not extinct.