Cretaceous–Paleogene extinction (Chicxulub impact)
Extinción del Cretácico-Paleógeno (impacto de Chicxulub)
- Date
- c. 66 Ma · confidence medium
- Place
- Chicxulub crater, Yucatán, Mexico
- Credited to
- Natural event
- Field
- Cosmos & Earth
What was discovered
An asteroid about 10 km across strikes Yucatán, ending the non-avian dinosaurs and three quarters of all species, and making way for mammals.
Planetary event (F5), verified against sources on 25-09-2026.
What it led to
- Mammal radiation