Rick Cochrane on Instagram: "One of my most memorable discoveries. It was a random spot on a half day trip with no reason to expect that @sciencesadler and I would uncover a Mastodon lower mandible, fully intact with all teeth. Alongside it, we recovered the animal’s lower mandibular tusks, upper tusks, and even the upper teeth from the maxilla section of the jaw. Buried deep in the river bottom clay, it took us two trips to recover everything. The site was so remote that we had to hike for mile