(geology) Alternative form of KT (“Cretaceous–Tertiary”)

(geology) Alternative form of KT (“Cretaceous–Tertiary”)

The geological signature of the transition between the Cretaceous period and the Tertiary period 65.5 million years ago.

The rapid dying off of a large percentage of all animal species in a comparatively short period of time 65.5 million years ago. This coincides with the end of the Cretaceous period, and may have been caused by an impact event.