Maybe. Some pokemon evolve differently according to circumstance. I never heard about it happening to Cubones when I first researched what he was.

[ His type! Assumption wiggled, patting Walter's arm and hopping out of his relaxed grasp. He took his bone and tapped it against the Halo on his forehead - and an eerie green flame burst into light over the tip. With and a spin, the open tip also ignited. Walter's eyes widened in awe. How is his Pokemon so perfect ]

You're part fire-type...