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300 million
years ago (Pennsylvanian)
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Description: This is an utterly strange Colorado, where millipedes
are as big as snowboards and dinosaurs haven’t yet evolved.
Colorado has mountains, but it also has coastlines on its eastern
and western borders. The mountains are part of a range that extends
southeast to what is now Arkansas. The surrounding confier
forests are relatively new to the planet. Gravelly
streams wind their way through forests of 100-foot-tall scale
trees and giant relatives of the horsetail rush (Calamites).
Buzzing insects such as dragonflies are huge, but fin-backed
protomammals, reptiles, and amphibians are relatively small.
Artist:
Jan
Vriesen
Formation:
Fountain
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