# Cretaceous-Paleogene mass extinction

> extinction event ending the Mesozoic Era

**Wikidata**: [Q55811](https://www.wikidata.org/wiki/Q55811)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Cretaceous–Paleogene_extinction_event)  
**Source**: https://4ort.xyz/entity/cretaceous-paleogene-mass-extinction


## References

1. [Source](http://id.loc.gov/authorities/subjects/sh2020004499)
2. International Chronostratigraphic Chart 2023/09
3. Freebase Data Dumps. 2013
4. [Ruthenium isotopes show the Chicxulub impactor was a carbonaceous-type asteroid. 2024](https://www.science.org/doi/10.1126/science.adk4868)
5. National Library of Israel Names and Subjects Authority File