Established understanding of how fossils form. Interpreted fossils as the preserved remains of once living organisms that were buried in sediments and then turned into rock. Developed principles for determining the relative ages of rocks(original horizontality, Lateral continuity, Superposition)
Law of Superposition; oldest layer of rocks are at the bottom, principle of orginal horizontality
Father of geology. Well known for arguing that earth must be really old, and that geology requires an understanding of observable Earth processes extrapolated into deep time(uniformitarianism). Established principles for determining the relative ages of rocks(cross cutting relationships and erosion along contacts)
Founded modern geology with his theory of the earths formation. Hutton realized that the same natural processes he observed in Scotland had occurred in the past.
the present is the key to the past
Was a genius who advanced comparative anatomy and paleontology. Classified and described a vast diversity of animals while working at the worlds 1st national history museum in Paris. Established reality of extinctions.
Was among the first to realize that fossils succeeded each other in a specific, reliable order, providing new tool for correlating and relatively dating rock layers(Faunal succession; Biostratigraphy)