Relating to a geological time period in the early Miocene epoch, lasting from about 23 to 20 million years ago.
Named after the Aquitaine region in southwestern France where rocks from this geological period were first identified and studied during the 19th century.
During the Aquitanian period, the world was much warmer than today, whales were diversifying rapidly, and North America and South America were still separate continents—giraffes roamed Europe!
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