Pipotchi
...Alright, I've really been on the fence about it, but the meteor finally won me over. As much as I love both designs, and Steph's works better with the stats, it seems more Steel monotype than part Ground. Pip's design works from a typing standpoint since every fossil Pokemon is Rock-type, and Steel/Ground are both effective against rock. Plus, I'm probably the second biggest paleo-enthusiast here next to HONK. At this point, I'm honestly fine with either outcome!