First, you have to beat the game to unlock it then talk to Beth to go to the dig site Parchment Desert. After that talk to an old man then go the the shop in fossil guild and ask what today's special is, it'll be oasis seeds for 20k each, buy them and give them to the old man, then wait awhile and then go back and there be an oasis behind the old man then you'll finally be able to have the sonar detect fossils in parchment desert now.
You get her in Parchment Desert.
You find it at the parchment desert.
It is at the Parchment Desert.
Allo is in Parchment Desert.
T-Rex is in Parchment Desert.
At Parchment Desert
Good
you get smilo at the parchment desert
its in the parchment desert
parchment desert after all oasis seeds are planted
in parchment desert
Mount lava flow or parchment desert