I've heard you have to get the first 100 vivosaurs in the game (t-rex-chelon) and then you can do that! hope it works!
Just keep searching the place, and if you have no luck, try try again (and by that I mean you'll have to visit a million times to find it, but you will be rewarded!)!
by beating it
For Dusty Dunes you have to beat the semifinal match and for Petrified Forest you have to get the quest for a sardinasaurus fossil.
You take a amargo fossil from dusty dunes and super evolve it.
In Hot Spring Heights, or Dusty Dunes ( more common at Dusty Dunes)
Hotsand Hills is just a rough translation of the Japanese name of Dusty Dunes.
First buy the earth mask, then upgrade you sonor all the way, then look many times at dusty dunes
okay, first get a blue biker mask and then go to dusty dunes and keep going in and out and only digging fossils indecated with a yellow circle on your radar, and eventually, you might get one. That's what I did :)
treasure lake, mt krakanak, petrified woods, jungle labyrinth, dusty dunes, hot spring heights, rainbow canyon, ice grip plateau, Cant remember the rest. Sorry
Umm i think hotsand hills is Dusty Dunes in Cranial City :) But if not its probably a pay to dig site.
You have to get the pink mask and go to dusty dunes. Or just skip the mask and go to the bare bones grotto in rainbow canyon. Either way the fossil is exeptionally rare.
It is at dusty dunes but it not that easy to find.
it says my dads name on it