You can get Ptera fossils only with Donation Points (DP). Each part will cost you 100 DP, but they'll always be rare fossils (red bones, they give you a 25 point bonus when you clean them). You get DP by cleaning a fossil rock you've cleaned before, and if it has a lower score than the one currently integrated/in storage, it gets donated. If you clean a fossil that's in storage (hasn't been revived yet), the fossil with the lower score will be donated. If you clean a fossil rock and get the same score as the fossil that's currently integrated/in storage, it gets donated.
the pay to dig site(green) in rainbow canyon
If you meant Saichan, then Mt. Lavaflow in the regular Fossil Fighters. I'm not sure about Fossil Fighters: Champions.
You can find him at bonemoth
Treasure Lake
Petrified Woods
You can find allo in the rainbow canyon
in sea floor cavern
You take a amargo fossil from dusty dunes and super evolve it.
you can find it at hot spring heights
at hot spring heights
well you have to find goobs
up your but & around the corner
Go to Rainbow Canyon (Red) and you should find him.