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Fossil trackway discovered at Grand Canyon NP

Nearly 300 million years ago, in a sandy desert now preserved as Coconino Sandstone at Grand Canyon National Park, some creatures walked across an area left moist very likely by an oasis. Those tracks, revealed today in a remote area of the national park, likely point to the transition of amphibians to reptiles and reflect another of the wonders held within the National Park System.

The discovery of the trackway, which was found a couple years ago, was announced Wednesday. It dates back 280 million years, just about to the arrival of the Permian Period and before dinosaurs walked the Earth.

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