Fossils, the remains or imprint of a plant or animal preserved from prehistoric times by natural methods and found mainly in sedimentary rock, asphalt, coal, and amber, are the chief data upon which paleontological study is based.
(a plant or animal; preserved; T:from prehistoric times; by natural methods) (Fossils, the remains or imprint of a plant or animal; are; the chief data upon which paleontological study is based) (the chief data; is based; paleontological study)
a plant or animal Fossils, the remains or imprint of a plant or animal the chief data
preserved are is based
T:from prehistoric times by natural methods
the chief data upon which paleontological study is based
paleontological study