Omanyte

Omanyte is a small, ancient Pokémon resembling an ammonite. It has a spiral shell with a series of ridges and a soft, blue body with tentacles protruding from the shell's opening. Its eyes are large and round, giving it a curious expression. Omanyte is a Rock/Water-type Pokémon, known for its ability to retract into its shell for protection. It is believed to have gone extinct millions of years ago but can be revived from fossils.