After you left the Pokécentre, you went straight to the Pokémon Research Center. But on the way to him, you felt someone biting your leg. Looking down you, see Tyrant, a very rare ancient Pokémon born from the fossil.

"Tyrant! Rrrrrgh!" Tyrant growls and looks at you wagging his tail. It looks like either he likes you, or he's asking for food from you. Well, or maybe he wants to fight you...