Fossilized 10,000-year-old mastodon tooth found by California scientist
The fossilized tooth of a Pacific mastodon on 10 June at Midpen’s headquarters in Los Altos, California. Photograph: Midpeninsula Regional Open Space District/APView image in fullscreenThe fossilized tooth of a Pacific mastodon on 10 June at Midpen’s headquarters in Los Altos, California. It’s the most complete mastodon molar from our area, and the most spectacular mastodon molar that I’ve ever seen.
- ▪The fossilized tooth of a Pacific mastodon on 10 June at Midpen’s headquarters in Los Altos, California.
- ▪Photograph: Midpeninsula Regional Open Space District/APView image in fullscreenThe fossilized tooth of a Pacific mastodon on 10 June at Midpen’s headquarters in Los Altos, California.
- ▪It’s the most complete mastodon molar from our area, and the most spectacular mastodon molar that I’ve ever seen.
2 outlets in our directory ran this story, first to last over 2 hours. All of the coverage we found sits in one bucket: lean left. That one-sidedness is itself worth noticing.
- ▪ A Mastodon Tooth Is Discovered in a California Creek — NYT — US
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| Original publisher | The Guardian — World |
| Canonical URL | https://www.theguardian.com/us-news/2026/sep/12/fossilized-mastodon-tooth-10000-years-found-california |
| Publication time | Sat, 12 Sep 2026 20:34:58 GMT |
| Retrieval time | 2026-09-12T20:39:59.253Z |
| Last seen | 2026-09-12T20:39:59.253Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
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| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | 0ekU3JZXo-_J · 2 stories |
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| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
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| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
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| Commercial reuse | May the content be reused commercially? | Not permitted |
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Opening excerpt (first ~120 words) tap to expand
The fossilized tooth of a Pacific mastodon on 10 June at Midpen’s headquarters in Los Altos, California. Photograph: Midpeninsula Regional Open Space District/APView image in fullscreenThe fossilized tooth of a Pacific mastodon on 10 June at Midpen’s headquarters in Los Altos, California. Photograph: Midpeninsula Regional Open Space District/APCaliforniaFossilized 10,000-year-old mastodon tooth found by California scientistMolar from large mammal that once lived in North America is in ‘immaculate condition’ after discovery in Bay AreaUwa Ede-OsifoSat 12 Sep 2026 16.34 EDTLast modified on Sat 12 Sep 2026 16.36 EDTSharePrefer the Guardian on GoogleA 10,000 year-old tooth in remarkable condition from an ancient Pacific mastodon, a large mammal that once inhabited North America, was recently…
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