# Cretaceous–Paleogene boundary

> geological signature, usually a thin band of rock, marking the transition from the end of the Cretaceous Period and the beginning of the Paleogene Period, dated with radiometric methods, at the age of 66.043 ± 0.011 Ma

**Wikidata**: [Q682871](https://www.wikidata.org/wiki/Q682871)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Cretaceous–Paleogene_boundary)  
**Source**: https://4ort.xyz/entity/cretaceous-paleogene-boundary


## References

1. Freebase Data Dumps. 2013
2. BBC Things