Fossils, the remains of organisms that once lived on Earth, are usually found in sedimentary rocks.
(organisms; lived; L:on Earth; T:once) (the remains of organisms; are found; L:in sedimentary rocks; T:Fossils; T:usually)
organisms the remains of organisms
lived are found
L:on Earth T:once
L:in sedimentary rocks T:Fossils T:usually