I am 99% sure he's in the city with the first gym in a building to the left side of the town. Hope this helped :)(:
The museum in Oreburgh city has a guy behind the counter that will make you a Pokemon from a fossil.
On route 111 there is a guy standing right by a tree talk to him.
A Dome fossil that is found in the underground whilst digging is Kabuto if it's taken to the fossil guy in Oreburgh City.
first you have to go to eterna city. go to the house next to the Pokemon center. the guy will give you an explorer kit. just use it ( key items pocket) and you can go underground. the best place to get a fossil is to use the kit under oreburgh city. If you find a fossil, go up to oreburgh city and go to the museum. this guy will give you a Pokemon at level 20.
Get a old amber and take it to a guy in the museum in Petwer City,
Take your fossil to the Devon Corporation in Rustboro City. On the second floor, the guy on the back row will take it and turn it into a Pokemon for you.
IT is in the mountain where you fight a guy and you get to choose which fossil to get
you take the fossil to rustboro city and take it to the building where you got the POKENAV talk to the guy on the 2nd floor in the bottom right hand corner, give him the fossil and go talk to Mr.Stone. After that go to the same guy yougave the fossil to and he will give you a ancient pokemon. claw fossil:anorith root fossil:lileep
do u mean the fossdil guy the person who makes you fossils real? if it is he is in the Pokemon mining meuseumwhich is north east of the city
in the nacrene gym
The plume fossil is a fossil that contains the Pokemon archen but you can either get the plume fossil or the cover fossil from this guy in the relic castle.
In Oreburgh City, go to the Oreburgh Mining Museum. Go to the desk and on the right will be a scientist guy. Talk to him and he will take your fossil.