During the Tonian Period, Earth’s landmasses were consolidated into a single supercontinent called Rodinia, which began to break up as the Tonian Period progressed. Some researchers suggest that Rodinia broke into at least two large fragments between 800 million and 650 million years ago, with one drifting toward the North Pole and rotating counterclockwise and the other, which would later become the supercontinent Gondwana, drifting southward and rotating clockwise.
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