>>47943895There has to be a Pokémon game that takes place a few million years in the past for that to happen. Even then all the fossil Pokémon would've lived in different time periods like with Tyrantrum living 100 million years ago in the Pokémon world (assumably Aurorus lived in the same period as well due to Amaura's dex entries mentioning "violent predators" like Tyrantrum).