Note 4


Note however that the hypothesis of global glaciations in the Vendian and Late Riphean [Harland, 1964; Hoffman et al., 1998; etc.] cannot be deemed proven yet [Chumakov, 1992; Crowell, 1999; Smith, 2000; etc.], because it is still based on sporadic [Evans, 2000\link44) and questionable [Meert and van der Voo, 2000] paleomagnetic measurements.
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