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A coprolite is fossilized feces. Coprolites are classified as trace fossils as opposed to body fossils, as they give evidence for the animal's behaviour rather than morphology.

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A fossil trackway is a type of trace fossil, a trackway made by an organism.

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Petrification is the process by which organic material becomes a fossil through the replacement of the original material and the filling of the original pore spaces with minerals.

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Organisms buried in sediment may decay or dissolve away leaving a cavity or mold.

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Principles of Geology, which states that, with sedimentary rocks, if inclusions (or clasts) are found in a formation, then the inclusions must be older than the formation that contains them.

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Cross-cutting relationships is a principle of geology that states that the geologic feature which cutsanother is the younger of the two features. It is a relative dating technique in geology.

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Principle of original lateral continuity

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Principle of original lateral continuity

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Layers of sediment initially extend laterally in all directions; in other words, they are laterally continuous.

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The Principle of Original Horizontality states that layers of sediment are originally deposited horizontally under the action of gravity

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sequence of rocks deposited in layers, the youngest layer is on top and the oldest on bottom, each layer being younger than the one beneath it and older than the one above it.

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A true form fossil is a fossil of the whole/entire body of the organism, like an actual animal or animal part

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Uniformitarianism natural laws now operating to modify the Earth's crust have acted in the same regular manner.