You can obtain an Archen by first going to the Relic Castle in Desert Resort. Go left past all the trainers and then you will see a backpacker girl. Talk to her, and she will give you a choice between a Cover or Plume Fossil. Choose the Plume Fossil, then go to the Nacrene City Museum and talk to the first person you see on the right. Make sure you have an extra space in your party because after you talk to the man he will give your Level 25 Archen.
You must revive its fossil.
i think you can only find it in Pokemon black if you have white like i do tuff numbs.
Archen evolves into Archeops at Lv. 37.
Archen evolves into Archopes at level 37 in Pokemon Black, hope this helps :)
archen
Archen doesn't evolve from a stone. But you can evolve him at level 37.
To find a archen in both versions, you need to go to the Relic castle and talk to the woman backbacker on the first floor and talk to here and she while ask you to take a fossil from her: the cover fossil which is titorga and a plume fossil is archen. Then fly to Nacrene city, and go to the gym and talk to the lady in blue on the right and she will resurrect the plume (cover) fossil into archen or titorga.
37
There is a lady with a backpack on she gives you either a plume fossil(Archen) or a cover fossil(tirtouga)
archeops at lvl 37
At the Relic Castle, you need to take the Plume Fossil. If you take the other Fossil you cannot get Archen.
Yes. Al you need to do is catch either one of the pokemon mentioned, for example Archen, then get a friend to trade from black -> black or white -> black with the other pokemon (in this case Tirtouga) to you.