When did dinosaurs live and how do we know

Fossils, including dinosaur remains, are found in layers of rock, commonly called strata. The field of stratigraphy is the geological specialty that tells us how old or young particular strata are; thus, stratigraphy is a means of learning the age of dinosaur fossils. Stratigraphy is divided into chronostratigraphy or time stratigraphy (chronos - time), lithostratigraphy or rock stratigraphy (lithos - rock), and biostratigraphy or stratigraphy as indicated by the presence of fossils (bios - organisms).

Was this article helpful?

0 0

Post a comment