Cuvier, fossils, and catastrophism Fossils = Relics or impressions of organisms from the past preserved in rock &#149; Most fossils are found in sedimentary rocks, which: - Form when new layers of sand and mud settle to the bottom of seas, lakes, and marshes, covering and compressing older layers into rock (e.g. sandstone and shale) -
(Most fossils; are found; T:from the past) (new layers of sand and mud; settle; to the bottom of seas, lakes, and marshes)
Most fossils new layers of sand and mud
are found settle
T:from the past
to the bottom of seas, lakes, and marshes