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fosils

Quiz Thursday through fossil definitions.

QuestionAnswer
Mummification A method of preservation through dehydration; bacteria that cause decay cannot survive arid (dry) environments.
Freezing A method of preservation through very cold temperature; bacteria that cause decay cannot survive in very cold environments.
Petrification A method of preservation that occurs when minerals in groundwater replace the organic material in a dead organism.
Carbon films A type of fossil in which a carbon imprint of a leaf, stem, flower, or fish is left in sedimentary rock made of soft clay or mud
Mold An empty space left in a sedimentary rock when a shell or other hard object dissolves.
Cast A replica of the original organism; created when mud or sand fills a mold.
Coprolite Fossilized dung or waste material.
Gastrolith Fossilized digestive stone from a dinosaur
Trace fossil A fossilized mark that formed in sedimentary rock by the movement of an animal on or within soft sediment. Examples include: tracks, footprints, borings, and burrows.
Index fossil A fossil that is used to establish the age of rock layers because it is distinct, abundant, and widespread and existed for only a short span of geologic time.
Created by: gymnast4lyfe
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Voices

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