On a tract of public land near Dubois, an extrusion of very old rock — known as the lower Popo Agie Formation — peeks out of a hillside. To the unskilled eye, it just looks like a patch of ...
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230 million-year-old dinosaur is oldest ever discovered in North America — and changes what we know about how they conquered EarthPartial remains from multiple individuals of the new species, Ahvaytum bahndooiveche, were first discovered in 2012 at the Popo Agie Formation in Wyoming. The fossils, which predominantly ...
It is named after a geological wonder: A limestone cavern called the Sinks. Here, the Popo Agie River vanishes into the cave and then reemerges further downstream into a spring called the Rise.
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