Where do you get compso on fossil fighters

You can compso at the fossil donation center for 200dp a piece. To get a lot of dp, make sure that Kl33n's level is high then go to greenhorn plains and dig up a lot of fossils. Go to Kl33n and drop off the fossils for cleaning. While waiting, fight a fossil battle or two then go backto kl33n and he should finish. Repeat if you need more dp.