Cover Fossil is Tirtouga.
Plume Fossil is Archen.
Tirtouga from the Cover fossil, and Archen from the Plume fossil.
You can turn in your fossil in the Nacrene museum. Speak to the lady on the right. There, the lady will change the fossil to a pokemon!
Tirtouga (its a turtle pokemon)
What's a skull fossil
cover fossil can be found in the desert ruins.....
no you cant but i will tell you witch is the strongest it is archen the plume fossil
you get the pre evelution of archeops
Relic Castle in the desert
You must revive its fossil.
no you can only get it by event
A man in the first floor of the Relic castle will offer you the choice of a Cover fossil or a Plume Fossil.
To get fossil pokemon go to the Nacreen Museum and talk to the people right inside the door. One of them takes you fossils and turns them back into pokemon.