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10 Cards in this Set
- Front
- Back
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Trilobite
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well-known fossil group of extinct marine arthropods that form the class Trilobita
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Geologic
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the science comprising the study of solid Earth, the rocks of which it is composed, and the processes by which they change
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Time Scale
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a system of chronological measurement that relates stratigraphy to time
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Era
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a subdivision of geologic time that divides an eon into smaller units of time
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Period
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a length or portion of time
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Epoch
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a period of time in history or a person's life, typically one marked by notable events or particular characteristics
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Organic Evolution
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the sequence of events involved in the evolutionary development of a species or taxonomic group of organisms
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Species
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a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding
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Natural Selection
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the process whereby organisms better adapted to their environment tend to survive and produce more offspring
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Pangea
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landmass from millions of years ago
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