Scylla Posted May 17, 2019 Share Posted May 17, 2019 I remember seeing Trackways in the Cocconino Sandstone as a kid in the Grand Canyon. These are not the ones I've seen before. Almost 100 years after the first paper out of the Grand Canyon is one describing an icnotaxa unexpected in the Permian desert. https://phys.org/news/2019-05-newly-fossil-footprints-paleontologists-rethink.amp 3 Link to comment Share on other sites More sharing options...
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