change in a kind of organism over time; process by which modern organisms have descended from ancient organisms
group of similar organisms that can breed and produce fertile offspring
the trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock
The view that most of earth's geological features are the result of large-scale catastrophes such as floods, volcanic eruptions, etc.
a model of evolution in which gradual change over a long period of time leads to biological diversity
Theory by Lyell and Hutton. Geological processes occur now as they always have been and occur at a uniform rate. Derive the notion of deep time. Deposition of silt, strata, erosion.