MAKE A MEME View Large Image Trace fossils, including worm burrows and trilobite feeding traces (Cruziana) in a block of Bright Angel Shale, Grand Canyon National Park, Arizona. (NPS Photo by Cassi Knight, Paleontology Guest Scientist) Trace fossils, including worm ...
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Keywords: fossils geology paleontology petrified wood tracks trackway national park service nationalparkservice outdoor texture Trace fossils, including worm burrows and trilobite feeding traces (Cruziana) in a block of Bright Angel Shale, Grand Canyon National Park, Arizona. (NPS Photo by Cassi Knight, Paleontology Guest Scientist) Trace fossils, including worm burrows and trilobite feeding traces (Cruziana) in a block of Bright Angel Shale, Grand Canyon National Park, Arizona. (NPS Photo by Cassi Knight, Paleontology Guest Scientist)
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