More from this author. 1  Largest World Cities: 2014. 2  World Urban Areas Population and Density: A 2012 Update. 3  Largest Cities in the World: 2016. 4  Largest 1,000 Cities on Earth: World Urban Areas: 2015 Edition. 5  The Costs of Smart Growth Revisited: A 40 Year Perspective.
Definition of fossil. 1  1 : a remnant, impression, or trace of an organism of past geologic ages that has been preserved in the earth's crust â compare living fossil. 2  2a : a person whose views are outmoded : fogyb : something (such as a theory) that has become rigidly fixed.
(a.) Like or regarding fossils; within rocks, whether petrified or not; as, fossil plants, shells. (n.) A substance dug through the planet. (n.) The continues to be of an animal or plant present in stratified rocks. Many fossils fit in with extinct types, but the majority of of the later people participate in types still-living. (letter.)