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15 Cards in this Set
- Front
- Back
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ERA
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The largest division of earth's history. The Precambrian, Paleozoic, Mesozoic, and Cenozoiceras are measured in millions of years.
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GEOLOGIC TIME
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The time scale of the history of the earth and its life
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CROMAGNUN
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An upper paleothic population of humans appearing about 100,000 years ago. Looked like modern humans, used language, music, art.
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FOSSIL
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Remains or traces of an organism that lived in the past.
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EXTINCT
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Referring to forms of life that have died out.
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FOSSIL RECORD
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Record of life on earth provided by fossils.
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PRIMATE
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A member of the group of animals that includes humans. Primates appeared more than 65 million years ago.
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CAST
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A fossil formed by minerals in water that build up in a mold.
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MOLD
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A fossil impression left in rock by the hard parts of the organism.
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HOMINOID
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The primate ancestor of modern humans.
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ORANGUTAN
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Large, long-armed ape of Borneo and Sumantra having arboreal habits.
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PILTDOWN MAN
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In 1912, thought to be the "missing link", parts of a skull and jaw, found in Piltdown, Engalnd. Skull large enough for large brain and apelike jaw. Turned out to be a fraud.
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RADIOACTIVE DATING
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A method of determing an object's agebased on known decay rates of radioactive elements.
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RELATIVE AGE
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In sedimentary rock, by examining the position of layers of rock in relation to others, the approximate age of each layer.
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NEANDERTHALS
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Homosapiens that appeared about 130,000 years ago. Looked different than humans with large bones, heavy eyebrows, 1.5 to 1.7 m high. They used tools and fire, language, social.
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