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Sketch of a coprolite—fossilized animal excrement

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Sketch of a coprolite—fossilized animal excrement.jpg Geologic time scaleMiniaturesSketch of a gastrolith—the gizzard stone of an ancient reptileGeologic time scaleMiniaturesSketch of a gastrolith—the gizzard stone of an ancient reptileGeologic time scaleMiniaturesSketch of a gastrolith—the gizzard stone of an ancient reptile

Coprolites are fossil dung or body waste. These objects can provide valuable information as to the food habits or anatomical structure of the animal that made them.