An adult mastodon tooth that was spotted at Rio Del Mar Beach near Aptos Creek is now in the hands of paleontologists in Santa Cruz. The foot-long tooth was found by Jennifer Schuh while walking the beach on Friday. Not knowing what it was, she snapped a few photos, posted them on social media and left it on the sand. That caught the attention of paleontologist Wayne Thompson at the Santa Cruz Museum of Natural History. "He called me and told me what it was and I rushed back, but it was gone. I was crushed," Schuh said. "I knew...