An animal dies and falls into a river. over time sand, rock, and other material settle on top of the animal remains, completely covering it. what type of rock might form to preserve this fossil? lava igneous metamorphic sedimentary basaltic

If an animal dies and falls into a river, and over time sand, rock, and other material settle on top of the animal remains, sedimentary rock will be most likely to form because of the layering.

An animal dies and falls into a river. Over time sand, rock and other material settle on top of the animals remain completely covering it. A sedimentary rock might form to preserve the fossils.  Sedimentary rocks comprise of the stabilization and compression of sediments. 

Ithink you should go back and learn in school rather then here asking questions