If you want to find fossils, knowing what
kind of rocks to search in is half the battle. Most fossils "hide out" in Sedimentary rock. When tiny bits of rocks and minerals (called sediment)
join together over millions of years, they become sedimentary rock. Plants and animals that become sandwiched in this sediment eventually
turn into fossils.
Two examples of sedimentary rocks are sandstone and shale.
Sandstone is formed by sand particles. It is often found
in deserts, beaches, and other sandy environments.
Shale is formed from particles of mud.
Good places to find fossils are outcrops. An outcrop is
a place where old rock is exposed by wind and water erosion and by other people's digging.