GEOLOGY

Detailed explanation-1: -There are three main types of rock: igneous rock, metamorphic rock, and sedimentary rock. Almost all fossils are preserved in sedimentary rock.

Detailed explanation-2: -Sedimentary rocks have the ability to retain fossils because unlike most igneous and metamorphic rocks, sedimentary rocks occurs at temperatures and pressure that do not obliterate fossil remnants. Therefore, fossils are found in sedimentary rocks.

Detailed explanation-3: -Fossils are commonly found in sedimentary rocks. Sedimentary rocks are the most common type of rock since they are formed by the earth’s natural forces like wind and water.

Detailed explanation-4: -Fossils are most common in limestones. That is because most limestones consist partly or mostly of the shells of organisms. Sometimes, however, the shells are worn so much that they look like sediment grains rather than “real” fossils. Fossils are also common in shales, which form from muds.