Yeah without all the artwork it's a little difficult to visualise what is happening haha.  I had a friend run into the same issue and it was because you're meant to click the fossil when they're green and that 'collects' the fossil, otherwise they are just in the drawer uncovered but not collected

There are already a couple of different tools in the game but I didn't have the time to link it up fully so they will be in the finished version :), currently you just use a little sandblaster but I have a spoon and chisel set up, I just need to come up with more comical tools too, maybe an electric whisk? Haha

That is my intention with it, I just ran out of time to get the artwork done, I've been working on that since I uploaded it so t will be in the next update :). I also need to work on the money because yeah it's a little unbalanced at the moment

Hey, I just noticed that myself! I did post an update so now you can buy things, the rocks go back into your drawer, and all the fossils go to the fossil shelf where you can sell them, apologies about that!  I will work on saving the game between sessions also when I get some other things updated :)