Cretaceous–Paleogene boundary
Concept
A geological boundary layer indicating a mass extinction event, commonly associated with the asteroid impact that killed the dinosaurs.
Mentioned in 2 videos
Videos Mentioning Cretaceous–Paleogene boundary

Why The Modern World Make No Sense - Take Back Control Of Your Time & Focus | Cal Newport
Cal Newport
The geological boundary marking the end of the Cretaceous period and the beginning of the Paleogene period, often associated with the extinction of the dinosaurs.

What if Humans Are NOT Earth's First Civilization? | Silurian Hypothesis
PBS Space Time
A geological boundary layer indicating a mass extinction event, commonly associated with the asteroid impact that killed the dinosaurs.