fossils

The one to the left is a mold of an original remain it is an egg and the one to the left is the original remain of a dinosaur egg

 

3 youngest since it is the first one on top which is an intrusion in another rock

then 4 because it is the first on top besides the intrusion

then 1 because it is the second one on top

then 6

then 5 

then 2