Paleontologists discovered the bones and teeth of an early mammal-relative that roamed approximately 180 million years ago, officials announced.
A field crew studying fossil tracks near Lake Powell recently discovered an 'extremely rare' set of prehistoric fossils along a stretch of the reservoir in Utah, officials announced on Friday. The crew of paleontologists was documenting tracksites last spring when they came upon the unusual find: a tritylodontid bonebed in the Navajo Sandstone in Utah. It was the first tritylodontid bonebed discovered there, the National Park Service said in a news release.
Scientists have estimated that mammals first appeared on Earth between 170 million and 225 million years ago, so the tritylondontid creatures would have been some of the earliest kind.
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