The partial remains of a large animal entombed in a thermal feature in Yellowstone's Mud Volcano Area.
Photo of the Day #730: Unknown Bones
The partial remains of a large animal entombed in a thermal feature in Yellowstone’s Mud Volcano Area.
Brian Switek is a freelance science writer and a paleontology volunteer with the Natural History Museum of Utah. He is also author of the books My Beloved Brontosaurus and Written in Stone. ... Read More
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