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A 9-year-old boy didn't realize he found a mammoth fossil in his grandma's backyard until Facebook commenters said it looked like a tooth

Jeremiah Longbrake
Jeremiah Longbrake holding the Mammoth tooth above the creek where he found it in Oregon. Megan Johnson
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A family in Oregon was stunned when their 9-year-old boy discovered an ancient fossilized mammoth tooth in his grandma's backyard last month.

Jeremiah Longbrake was up to his usual after-school activities in the wooded area behind his grandma's house in southern Oregon in mid-April.

As he scoured the brush for interesting rocks, Longbrake said he was digging around in the creek when he saw something that looked like a plastic container or maybe a piece of petrified wood.

So, out of curiosity, he fished it out with a stick. 

Longbrake had no idea he was holding a fossil at least 10,000 years old, a find first reported in the local News Review newspaper.

He said at first he didn't think it was anything special but decided to bring it back to his grandma's house to show his mom, Megan Johnson. 

"When he first brought it to me, I initially thought it was some sort of petrified wood with like quartz running through it," Johnson told Insider. "And then, I got to look at it, and I'm like, well, I've never seen anything like this before, so this is really different... There's some bendy areas and it kind of weaves through almost like a ribbon candy."

close-up image of the Mammoth tooth
The Mammoth tooth is about the size of two fists.  Megan Johnson

Johnson decided to post pictures of the object on Facebook, hoping that her rock-hound friends would be able to help identify it. But they said it didn't look like wood at all; it seemed like a weird tooth.

Johnson reached out to a handful of archaeologists and paleontologists who confirmed that not only was the strange rock a tooth, it was an ancient mammoth fossil.

Johnson said her son was thrilled when he found out.

"I couldn't keep that thing out of his hands, save for the time he was down in the creek looking for more stuff," she said, laughing. 

"I thought that I could have been walking on a dead mammoth body," Longbrake told Insider. "Or a caveman."

Jeremiah and his brother pointing out the creek where they found the tooth
Jeremiah and his brother Bow pointing out where the tooth was found.  Megan Johnson

Longbrake isn't sure yet what he wants to do with the tooth — he says he'll probably keep it for a while, and then he might donate it to a museum.

But, he said, he definitely won't let his older brother have it. 

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Grace was a politics and business reporter at Business Insider, with a particular focus on topics related to the Department of Government Efficiency. She was previously a homepage and breaking news reporter at BI and an associate producer for BI's breaking news podcast, The Refresh. She has a Master of Science from Columbia University Graduate School of Journalism with a focus on investigative journalism and audio/radio production. 
Hannah Getahun was a reporter for Business Insider's West Coast team covering just about everything, including national politics, social justice, pop culture, science, and technology. She graduated from California State University, Long Beach with a bachelor's degree in journalism and a minor in environmental science and policy. Before joining Insider, she interned at CalMatters writing health and environment stories.Story highlights: Beyoncé wore statement shades throughout the Renaissance World Tour and played a part in making them cool againThe photographer who captured people occupying subway tracks for a Black man killed in the 1980s says history came 'full circle' after protesters did the same for Jordan Neely'I would die': People with disabilities say abortion bans could have fatal consequencesOfficer response in Jayland Walker shooting was 'overkill,' use-of-force expert says: 'The police officers involved determined that his life wasn't worthy to be preserved.'She helped raise $2 million for abortion funds by calling out Matt Gaetz: Meet Olivia Julianna, a Gen Z activist who has inspired copycat fundraisersAmerican car culture is changing thanks to younger generations. But Gen Z and Millennials see vehicle ownership much differently.It's not just you: Cybercriminals are also using ChatGPT to make their jobs easierOrca whales were discovered with a toilet paper chemical in their livers and skeletal muscles. It's just the 'tip of the iceberg' for one of the most contaminated marine mammals in the world.