Discover 5 Incredible Silurian Period Animals - AZ Animals
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Silurian Eon. 443.8-419.2 Mya Environment climate. Mean temperature: 17 °C Atmospheric oxygen: 14% Concept. The Silurian is a relatively short geological period, lasting about 25 million years. Laurentia collided with Baltica, closing
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Discover 5 Incredible Silurian Period Animals - AZ Animals