Single post in Big Fossils

We dont really need this but it is a good idea. It would add a bit of spice to getting fossils. And a bit of realism too not that we need that in a pokemon game lol. To add maybe make it like 1% chance to get the big fossils.The chance has to be low but not too low. Also will the scour boost apply to big fossils as well? But how would this work with galar fossils since they do not evolve?