Fossil track - horizon:  Coconino 150' from base coconino: Needs identification by specialist.  &lt;a href="<a rel="nofollow" class="external free" href="http://www.nps.gov/grca/naturescience/fossils.htm">http://www.nps.gov/grca/naturescience/fossils.htm</a>" rel="nofollow"&gt;www.nps.gov/grca/naturescience/fossils.htm&lt;/a&gt;  NPS Photo by Michael Quinn
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/50693818@N08">Grand Canyon National Park</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/grand_canyon_nps/4749589450/">2815 Grand Canyon_ Fossil Tracks in Coconino Sandstone</a>