Kabutops

Kabutops is a very-rare Rock, Water-type Pokémon from Kanto region. It evolves from Kabuto when fed with 50 candies.

Pokédex description
Shellfish Pokémon

''Kabutops swam underwater to hunt for its prey in ancient times. The Pokémon was apparently evolving from being a water dweller to living on land as evident from the beginnings of change in its gills and legs.''

Evolution family
Kabutops is the part of a two-member family.