k North America, Cambrian period North America, Cambrian period. Image 1 of 9. Computer artwork of the Cambrian period stage approximately 542 to 488 million years ago of a sequence showing the formation of the North American continent. The continents are slowly moved over the surface of the Earth by currents in the fluid mantle below the crust. Over millions of years the continents moved into the positions they are in today. The present day position of the United States of America USA is shown outlined in white. For North America at different points throughout prehistory, see images E402163 to E402171. Stock Photo - Afloimages
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North America, Cambrian period North America, Cambrian period. Image 1 of 9. Computer artwork of the Cambrian period stage  approximately 542 to 488 million years ago  of a sequence showing the formation of the North American continent. The continents are slowly moved over the surface of the Earth by currents in the fluid mantle below the crust. Over millions of years the continents moved into the positions they are in today. The present day position of the United States of America  USA  is shown outlined in white. For North America at different points throughout prehistory, see images E402 163 to E402 171.
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North America, Cambrian period

North America, Cambrian period. Image 1 of 9. Computer artwork of the Cambrian period stage (approximately 542 to 488 million years ago) of a sequence showing the formation of the North American continent. The continents are slowly moved over the surface of the Earth by currents in the fluid mantle below the crust. Over millions of years the continents moved into the positions they are in today. The present day position of the United States of America (USA) is shown outlined in white. For North America at different points throughout prehistory, see images E402/163 to E402/171.

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158124160

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