# ‘Immaculate condition:’ Rare mastodon fossil found in San Mateo County creek

> **Open Intelligence Dossier** · First detected: 2026-09-10 09:07 UTC · Category: Science

## Executive Summary
1 news sources are covering this Science story right now — PULSE is tracking how fast it spreads.

## Intelligence Brief
"‘Immaculate condition:’ Rare mastodon fossil found in San Mateo County creek" is generating significant coverage in the Science category, with 1 articles from 1 distinct sources tracked by PULSE so far.


Outlets currently covering the story include KTLA. PULSE measures a story's velocity from how quickly new articles appear and how many independent newsrooms join the coverage.


This brief was generated by PULSE's extractive engine from coverage metadata only. The latest headlines from every source are listed below; the velocity chart shows how the story is developing in real time.

## Multi-Source Evidence Table
| Source Outlet | Headline | Verification URL |
|---|---|---|
| KTLA | Massive Ice Age-era mastodon tooth found in California creek | [Source Link](https://news.google.com/rss/articles/CBMimgFBVV95cUxQUWhCRDNmT3ljdVpkS0wwb3I1MS1RLVIzbWxRTHQxRVYxSDdmQm4xZ2g1cTl4QzJSTF9vTzFKZWJxN0xFdDROakZIUloxU1hETXZsVUpCRWtPRDkyZEVHQmJuQ0JMRm1ZYlR0aExMYnpEWWlLWjhvS0RySGdrZFh2eDlFRjA5MmllQ3ppQUV6S2ZWUlo5VV84d0RB0gGfAUFVX3lxTE9FOFNXalhCQUlFemlpYlM3RVl4bEROZEh3VkQxMHlWLWVUWV90aE44SlJUQmdERWtHX01SSXdoR09mVGItbjNPbzNENVgyeHAxbEp1MHFDUUZ0Zy12THgtZFZSWnVGUEpNbUZLZlM2Zzd2dlJXdVFWWUR4cXhZMGxLM1RWbHZ1MS1KbjFFd0EzNmFfSHFscHByN0p6VkZ6VQ?oc=5) |

---
*Canonical Source: https://pulse.byoviral.com/trend/2026-09-10/immaculate-condition-rare-mastodon-fossil-found-in-san-mateo-county-creek*