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Why is the existence of Pannotia debated among geologists?
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paleogeography
Watch a time-lapse of Earth changing through geologic time, from the Cambrian Era to the projected period of Pangea Proxima.
In the field of paleogeography, the existence of the supercontinent Pannotia is a subject of ongoing debate among geologists because it is not widely accepted as a definitive event in Earth's history.12
While some researchers posit that large fragments of the earlier supercontinent Rodinia collided again approximately 600 million years ago near the South Pole to form Pannotia, this remains a hypothesis rather than a confirmed geological fact. The uncertainty stems from the challenges of reconstructing continental positions and movements during the late Precambrian time, as well as differing interpretations of the evidence regarding the timing and configuration of continental assembly and breakup during this period.12