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11 Cards in this Set

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GEOLOGIC COLUMN
The ordered arrangement of rock layers, which is based upon the ages of the rocks
THEORY OF EVOLUTION
states that organisms change time and that new kinds of organisms are derived from ancestral types
CENOZOIC ERA
THE MOST RECENT GEOLOGIC ERA BEGINNING 65 MILLION YRS AGO AGE OF THE MAMMALS
ERA
A VERY LARGE UNIT OF GEOLOGIC TIME
MESOZOIC ERA
geologic era that lasted from245 million to 65 million years ago
PALEOZOIC Era
geologic era that followed precambrian time lasting from 570 million to 245 million years ago
PRECAMBRIAN TIME
EARLIEST AND LONGEST GEOLOGIC ERA LASTING FROM 4.6 BILLION TO 570 MILLION YRS AGO
vertebrate
animal with a backbone
invertebrates
animal without a backbone
Periods
subdivision of a geologic era
EPOCHS
SUBDIVISION OF A GEOLOGIC PERIOD