An Archen, which evolves into Archeops.
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.
Cover Fossil is Tirtouga. Plume Fossil is Archen.
no you cant but i will tell you witch is the strongest it is archen the plume fossil
Tirtouga from the Cover fossil, and Archen from the Plume fossil.
you get the pre evelution of archeops
In the first bit of relic castle talk to the woman she gives you the choice of plume(archen) or cover(tirtouga) fossil
A man in the first floor of the Relic castle will offer you the choice of a Cover fossil or a Plume Fossil.
you must go to the second or third gym (with the museum in it) and talk to the person on the right when you enter. she will turn your fossil into a pokemon.
There is a lady with a backpack on she gives you either a plume fossil(Archen) or a cover fossil(tirtouga)
At the Relic Castle, you need to take the Plume Fossil. If you take the other Fossil you cannot get Archen.
On Pokemon black, both fossils are in the relic castle on the entrance floor, but you can only pick one fossil the cover fossil which is the turtle Pokemon and the plume fossil is the bird Pokemon.
The only fossils that can be found in the Relic Castle are the Plume Fossil which is the Archen Fossil and the Cover Fossil which is the Tirtouga Fossil but you can only select one.