Pfft, totally still counts even if fossil is not actually its own type. You are right though there are only nine, unless the display at the Pewter museum was making shit up or forgot one. But they are pretty hard to find even if there aren't a whole lot of them though, aren't they?

[He's honestly only ever seen them as starters or from git eggs, to be honest. Though maybe he just hasn't been looking in the right place?]

Like... where do you even go digging for fossils? Just random caves or something? The Ruins of Alph?