10,000-Year-Old Fossilized Mastodon Tooth Found in California Creek Is in "Immaculate Condition"

A remarkably well-preserved mastodon tooth was discovered in a California creek, surprising geomorphologist Brigid Lynch. "I've seen plenty of oddities in the field before, but nothing quite like this," she remarked. The tooth, belonging to a Pacific mastodon, is one of the most complete ever found in the region. Paleontologist Wayne Thompson expressed his excitement, calling it "the most spectacular mastodon molar I've ever seen."

These mastodons were colossal herbivores that roamed the Pleistocene epoch, roughly 2.5 million to 11,700 years ago. They differed from American mastodons, with narrower teeth, distinct tusks, and thicker leg bones. While mastodons and mammoths shared some similarities, their diets likely varied, with mastodons likely consuming a broader range of vegetation.

The location where the tooth was found now supports wildlife like mountain lions, bobcats, and various other animals that may have coexisted with the now-extinct Pacific mastodon. The tooth, approximately 8.5 inches long, 3 inches wide, and 7 inches deep, is estimated to be around 10,000 years old. It has been donated to Stanford University’s Doerr School of Sustainability, where researchers aim to date it more precisely through carbon dating and create a 3D model for educational purposes.

This discovery emphasizes the significance of Midpen's conservation efforts and underscores how recent these ancient creatures were in geological terms.