In this instructables I will show you how to make a fossil out of cheap materials such as cardboard and tape.
The fossil I made really looked like one just escavated from ground. I took less than 3 hours to make it.
Here are the stuffs you need:
Cut out the cardboard sheet as in the picture and the fold the slightly to give them a curve. These curves are the most important element. Notice that the ribs are longer at one end while shorter at other.