This is the first main area that you'll get after you finish up the tutorial when you start the game. It's very basic and just helps you mainly to learn more about playing. But, there are some things here that you'll need to find. In the general area, there are tons of Small Pearls that give you 500g each, and rocks that give you 40g each as well. The regular fossils that you'll find here are all air fossils: Shanshan, Goyle, Spinax, and V-raptor.
To get to the Pay-to-Dig area, you have to get your first sandle fossil and the area will be unlocked. The fossils that you will find here are: Andrarch (fire fossil), Carno and Centro and Carchar (all earth fossils), and Neo (neutral fossil.