* Formation: Sedimentary rocks are formed from the accumulation and cementation of sediments like sand, mud, and organic matter. These sediments often bury organisms, preserving their remains.

* Preservation: The process of sedimentation creates layers, protecting fossils from weathering and erosion. The pressure and heat of these layers can also solidify and preserve the remains.

* Examples: Common sedimentary rocks where fossils are found include:

* Limestone: Formed from the accumulation of marine organism shells.

* Sandstone: Formed from sand grains.

* Shale: Formed from fine-grained clay.

While fossils can sometimes be found in metamorphic rocks (formed by heat and pressure) or igneous rocks (formed from cooled magma), it's much less common. These processes often destroy or distort any existing fossils.