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Cenozoic era. The Columbia Encyclopedia, Sixth Edition. 2001-05 |
 | | In the late Cenozoic, the Cascade Range of volcanoes extended from southern British Columbia to N California, and represented a new volcanic arc superimposed on older structures. |
 | | The animal life of the Cenozoic was dominated by mammals, which were most numerous in the Tertiary period and declined, with the exception of a few specialized types, in the Quaternary period. |
 | | Cenozoic land mammals were never as large as the Mesozoic dinosaurs, but many were larger than todays mammals, and included beavers that grew to lengths of more than 7 ft (2 m), sloths as large as elephants, and birds up to 7 ft (2 m) in height. |
| www.bartleby.com /65/ce/Cenozoic.html (422 words) |
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