In our special #NationalFossilDay presentation, join park paleontologist Anne Miller as we back in time to explore the unique fossils found at Grand Canyon! Deep within rock layers laid down between 280 million years ago to over 500 million years ago, the park preserves many different environments and organisms of the geologic past. Learn about trace fossils, the organisms that made them, and their paleoenvironments through time! For an audio-described version of this video, visit: https://www.n