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 ...

One of Earth’s earliest mass extinctions wiped out most ocean life during a sudden global ice age. From the ruins, jawed vertebrates survived, diversified, and transformed the course of evolution.

Introduction -- The Mesozoic Era -- Discovering Order -- Interrelationships -- Origin of Dinosauria -- Saurischia -- Sauropoda -- Theropoda -- The Origin of birds ...

The past as prologue -- Adaptation -- Origin of species -- Human evolution -- Living fossils -- Extinction -- Macroevolution -- Epilogue, old and new pictures https ...