The Cretaceous–Paleogene (K–Pg) mass extinction event, marking the boundary between the Cretaceous and Paleogene periods approximately 66 million years ago, stands as one of the most profound ...

The asteroid impact 66 million years ago that ushered in a mass extinction and ended the dinosaurs also killed off many of the plants that they relied on for food. Fossil leaf assemblages from ...

The Paleogene Santa Rosa local fauna: introduction / Kenneth E. Campbell, Jr. -- The Paleogene Santa Rosa local fauna of Amazonian Peru / Kenneth E. Campbell, Jr., Carl David Frailey, Lidia ...

The asteroid impact 66 million years ago that ushered in a mass extinction and ended the dinosaurs also killed off many of the plants that they relied on for food. Fossil leaf assemblages from ...