As I mentioned a few months ago, I've been spending a lot of time on the fossils and rocks of Grand Canyon National Park this year. Part of why I've been doing this culminated on Saturday, September 28: our special National Fossil Day event, held at the park as part of their centennial festivities. (You can see the whole group that worked the event here.) We've been working for months on a Grand Canyon NP paleontological inventory, and to further that work as well as help at the public event, I spent the end of September in Arizona, visiting various places.