I don't think you can, but the Backpacker in the Desert Resort carries a Cover Fossil which can be restored at the entrance to the Nacrene City gym, so give it to the woman on the right and she will give you a Tirtouga!
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.
Tirtouga (its a turtle pokemon)
it evolves into Carracosta at level 37. you can only get a Carracosta if you evolve a tirtouga.
Cover Fossil is Tirtouga. Plume Fossil is Archen.
Zorua,reshiram,tirtouga,archen
tirtouga evolves into carracosta at level 37. if you wanted to know this too, archen evolves into archeops at the same level as tirtouga to carracosta
Tirtouga from the Cover fossil, and Archen from the Plume fossil.
Tirtouga is a Water and Rock type pokemon.
They evolve at level 37 or 38 not sure
u mean a cover fossi? u get a tirtouga
Tirtouga comes from the Cover Fossil.
you need to revive it's fossil in Nacarene city's gym's museum's front desk