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During the Cretaceous period of the Mesozoic era, global temperatures were generally warmer than today, averaging around 20-25°C (68-77°F). This era saw high levels of carbon dioxide and a greenhouse climate, contributing to polar regions being ice-free and widespread tropical conditions. Variations in temperature also existed, influenced by factors such as sea level changes and volcanic activity. Overall, the Cretaceous was characterized by a warmer climate that supported diverse ecosystems.

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The average temperature during the Mesozoic Era was estimated to be around 16-25°C (61-77°F). This era was characterized by warmer global temperatures compared to present day.


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