Why are fossils not found in igneous rocks? Share with your friends Share 1 Umake Zaman Thoker answered this There are no fossils found in igneous rocks because the high temperature destroys the remains of plants and animals in it. 5 View Full Answer Sushil Sudheer answered this igneous rocks are formed when the volcanic eruptions are cooled down and settled.these rocks also called molten rocks. these rocks are more harder than the others. 1