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1
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a scientist who studies fossils
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2
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the variety of life in the world or in a particular habitat or ecosystem.
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3
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no longer in existence
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4
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an object or structure with four feet, legs, or supports.
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5
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the state or process of a species, family, or larger group being or becoming extinct.
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6
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types of rock that are formed by the deposition and subsequent cementation
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7
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matter that settles to the bottom of a liquid
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8
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an individual animal, plant, or single-celled life form.
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9
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the process or a period of changing from one state or condition to another.
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10
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the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock.
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