• The supercontinent of Gondwana drifted over the south pole, initiating a great Ice Age that gripped the earth at this time.
• Gondwana, particularly Africa, straddled the South Pole and became extensively glaciated. There were even glaciers in what is now the Sahara.
• Metazoans were severely affected. About 60% of animal genera became extinct, making this the second or third most deadly mass extinction of the Phanerozoic
Source of Information : Climate Change: A Silent Threat by Sylvain Richer de Forges