You need to talk to a old man in the bottom left corner of the desert. he will tell you that the desert is too hot for the sonar and you need to plant oasis seeds. then the seeds will be available in the shop for 20,000G each. you will need four of them to be able to search the whole desert.
get 80,000 gold and when you finish the game you need 4 oasis seeds at 20,000 each to cool the parchment desert down so your sonar works then you just got to search until you get lucky remember: parchment desert :3
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 have to have the upgraded chips for your sonar.
you cant
upgrade sonar 2 the max
daspelto is rare but you should find him in the bb base with a fully upgraded sonar.
His name is Laurence and he tells you that the dig site is too hot for sonar to work. After talking to him, buy an oasis seed. Give it to him and wait a while for it to grow into an oasis. You have to do this 4 times.
Its in mount lavaflow but if you want to find it faster or don't get the same fossils, upgrade your sonar to fossil chip 2. Hope this helps :D
you don't need a dino you need to go to vivosaur island and go to the guild area and go into the guild and go to the guy on the left and talk to him and buy todays special and go back to parchment desert and find the old man and give him the oasis seed
You can find them in Miraculous Fossil rocks.You can find those in any Fossil Park but it is very hard to find one.They appear as Yellow dots on your sonar,but the yellow dots can also be Fossil rocks,Dark Fossil rocks,and Wonderous Fossil rocks.
If you get your sonar fully upgraded and put on red mask after fighting pauleen, go to mount krakanak then you will mind tons!
Sometimes, you can dig them up in any dig site. Using DP is unreasonable because it costs 2500. Just look for the yellow dots on your sonar after you fully upgrade it. Hope this helped!