
In geology, Rodinia (from the Russian `Родина`, ródina, meaning `The Motherland`) is the name of a hypothesized supercontinent, a continent which contained most or all of Earth`s landmass. According to plate tectonic reconstructions, Rodinia existed between 1.1 billion and 750 million years ago, in the Neoproterozoic Era. It is one of ...
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http://en.wikipedia.org/wiki/Rodinia

n. A supercontinent that existed during the Late Precambrian before the supercontinent Pannotia; the oldest supercontinent for which we have a good record; Russian for 'homeland.'
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http://www.ucmp.berkeley.edu/glossary/glossary_9.html
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