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 Life landed ashore during the Silurian & Devonian periods. Plants colonized the continents, creating habitats for the ancestors of today’s animals.
In the seas, massive reefs—larger than at any other time in history—covered the ocean floor, and fishes diversified in the deep. Eventually, one line of fishes gave rise to forms with limbs and digits—the tetrapods.
Explore this increasingly familiar world for yourself by selecting from the following:
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Basic Overview
Trace the complete progression of life on land as pioneering plants and animals populated the planet. You’ll learn more about all the action unfolding underwater during this time and the mass extinction that later devastated aquatic life.
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Image Gallery
Take a look at incredible fossils of plants, fishes, and creatures that once dwelled in Chicago’s ancient marine reefs.
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Evolutionary Essentials
Investigate three of the major evolutionary events that occurred during this time. The development of vascular plants, fishes with jaws, and tetrapods affected the future of all life in the coming eras.
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Continue to Basic Overview. >>
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