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Boring Billion

(million years ago)The Boring Billion, otherwise known as the Mid-Proterozoic and Earth's Middle Ages, is an informal geological time period between 1.8 and 0.8 billion years ago (Ga) during the middle Proterozoiceon spanning from the Statherian to the Tonianperiods, characterized by more or less tectonic stability, climatic stasis and slow biological evolution.

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