Ichniotherium tracks in the Coconino Sandstone

These tracks, located in a large fallen block of the Coconino Sandstone within Grand Canyon National Park are evidence of early tetrapods inhabiting deserts during the late Paleozoic (early Permian). Read more about the track block here: https://www.nps.gov/articles/grca-fossil-footprints.htm A copy of the publication is available here: https://www.researchgate.net/publication/333080394_On_the_presence_of_Ichniotherium_in_the_Coconino_Sandstone_Cisuralian_of_the_Grand_Canyon_and_remarks_on_the_occupation_of_deserts_by_non-amniote_tetrapods This fossil is managed in situ (in place) at Grand Canyon National Park, Arizona. Learn about paleontology in the National Park Service: https://www.nps.gov/subjects/fossils/index.htm Learn more about Grand Canyon National Park’s Centennial: https://www.nps.gov/grca/getinvolved/centennial.htm