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6 Cards in this Set

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Sedimentary Rock

a type of rock that fossils are most found in and is formed when layers of sand, silt, clay, or mud are cemented and compacted together or when minerals are dumped from a solution.

Relative Dating

based on the idea that in undisturbed areas, younger rock layers are deposited on top of older rock layers.

Radioactive Dating

uses radiation to determine the the age of dinosaur and other earth dwelling creature's fossils.

Embryology

study of embryos and their development.

Homologous Structures

body parts that are similar in structure and origin and can be similar in function.

Vestigial Structures

structure that doesn't seem to have a function and may once have functioned in the body of an ancestor.