Relic Castle in the desert
What's a skull fossil
You must revive its fossil.
Cover Fossil is Tirtouga. Plume Fossil is Archen.
A man in the first floor of the Relic castle will offer you the choice of a Cover fossil or a Plume Fossil.
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)
Root Fossil Claw Fossil Helix Fossil Dome Fossil Old Amber Armor Fossil Skull Fossil Rare Bone
In the first bit of relic castle talk to the woman she gives you the choice of plume(archen) or cover(tirtouga) 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