δNatu and δXatu are pure Rock types, being comprised of several fossils. See if you can spot the Helix Fossil, the Root Fossil, the Old Amber, Charcoal, and lots of bones. Granted, it’s much more evident on δNatu due to a smaller design, but… whatever.
And now, the other random delta designs that probably will never get evolutions.
That’s all for now, Boro Out!