* Formation: Sedimentary rocks are formed from the accumulation and cementation of sediments, which often include the remains of organisms.
* Preservation: The process of sedimentation and subsequent lithification (turning into rock) can preserve the hard parts of organisms like bones, shells, and teeth. Even soft tissues can be preserved under certain conditions.
* Fossils: Fossils, the preserved remains or traces of ancient life, are primarily found in sedimentary rocks.
While fossils can sometimes be found in metamorphic rocks (formed by heat and pressure), the processes involved often destroy or distort any original fossil evidence. Igneous rocks (formed from molten material) are unlikely to contain fossils because the intense heat would destroy any organic remains.
