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ES Chapter 18 Leach

ES Chapter 18 Leach A View of Earth's Past

QuestionAnswer
Cenozoic Era the most recent geologic era, beginning 65 million years ago; the Age of Mammals
epoch subdivision of a geologic period
era largest unit of geologic time
geologic column arrangement of rock layers based on the ages of the rocks
invertebrate animal without a backbone
Mesozoic Era geologic era that lasted from 248 million to 65 million years ago; the Age of Reptiles
Paleozoic Era geologic era that followed Precambrian time, lasting from 540 million to 258 million years ago
period subdivision of a geologic era
Precambrian Time earliest and longest geologic era, lasting from 4.6 billion to 540 million years ago
theory of evolution theory that organisms change over time and that new organisms are derived from ancestral types
vertebrate animal with a backbone
Created by: CoachLeach
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