Cretaceous
geo:time:period:cretaceousCretaceous Period (145–66 Ma): flowering plants (angiosperms) radiate; peak dinosaur diversity; chalk deposits; ends with K-Pg extinction (Chicxulub impact) wiping out non-avian dinosaurs.
Cretaceous Period (145–66 Ma): flowering plants (angiosperms) radiate; peak dinosaur diversity; chalk deposits; ends with K-Pg extinction (Chicxulub impact) wiping out non-avian dinosaurs.