K-Pg? What was wrong with the widely accepted K-T?
I’ve only ever heard it called the K-T boundary. WTH is this new one for?
“Cretaceous–Paleogene (K–Pg) boundary (formerly known as the K–T boundary) is a geological signature, usually a thin band, dated to 66.0 Ma (million years) ago.[1] K is the traditional abbreviation for the Cretaceous period, and Pg is the abbreviation for the Paleogene period. The boundary marks the end of the Cretaceous period, which is the last period of the Mesozoic era, and marks the beginning of the Paleogene period of the Cenozoic era. The boundary is associated with the Cretaceous–Paleogene extinction event, a mass extinction, which is considered to be the demise of the non-avian dinosaurs.[2] The boundary layer was once known as the K–T boundary, but Tertiary has been deprecated as a formal time or rock unit by the International Commission on Stratigraph”
http://en.wikipedia.org/wiki/K%E2%80%93T_boundary
It’s like the K-Pg13 but with less profanity.