>>29104634Since when was a "wharf roach" a living fossil?
Anyway, one of the trailers for the anime show Ash and Mallow in a museum looking at complete reconstructed fossils of Aerodactyl, Aurorus, and Rampardos.
A small chain of islands like Alola likely wouldn't bother having a fossil museum, especially one with complete reconstructed skeletons, if fossils weren't present in the region.
So, I feel pretty sure we'll be getting new fossil Pokemon in Alola.