Some fossil idea´s...
Rock/Steel Ankylosaur. It could be pure rock or maybe rock/normal. Very thick shell with a tail shaped like a sledgehammer.
Abilities: Shell Armor, solid rock, rock head (iron barbs maybe?)
stats: 100/125/105/40/75/30 = 475 total
It's design and attacks revolve around his hammer tail. It would be able to learn hammer arm, wood hammer and ice hammer.
Rock/electric Velociraptor. Tricky and quick pokemon. Good speed and offensive stats, but horrid defenses. high-risk, high-reward.
Abilities: motor drive, speed boost, competitive. (I was also thinking about some sort of schooling clone but with less extreme stat changes between the base form and the group form)
stats: 65/110/55/85/60/110: 475
It has tricky movement options such as baton pass and volt switch. Other than that it's mostly just the usual offensive moves and maybe some moves like taunt and nasty plot.
I HAVE CHORTLES!