"Lynch was working in a creek bed on a field survey for the threatened California red-legged frog when she spotted the “oddly shaped rock” in the water. Paleontologists later confirmed it was a molar of an adult Pacific mastodon, a huge herbivore that resembled an elephant and roamed the Earth for 2.5 million years before going extinct around 11,000 years ago."

#fossil #sfba

https://www.sfgate.com/bayarea/article/ice-age-tooth-22424677.php