# Olson's Extinction

> mass extinction that occurred 273 million years ago in the early Guadalupian of the Permian period

**Wikidata**: [Q3215912](https://www.wikidata.org/wiki/Q3215912)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Olson's_Extinction)  
**Source**: https://4ort.xyz/entity/olson-s-extinction