Noun: Cainozoic
- Era spanning approximately the last 66 million years, characterized by the dominance of mammals
"The Cainozoic began after the extinction of the dinosaurs";
- Cenozoic, Cenozoic era, Age of Mammals
- Of or relating to or denoting the Cenozoic era
"Cainozoic rock formations are found throughout the region";
- Cenozoic
Type of: era, geological era
Part of: Phanerozoic, Phanerozoic aeon, Phanerozoic eon
Encyclopedia: Cainozoic