The extinction of dinosaurs occurred at the end of the Mesozoic Era, not during the Cenozoic Era.

Primates, including humans, first appeared during the Cenozoic Era.

Paraceratherium, also known as Indricotherium, was the largest land mammal, reaching a height of up to 18 feet and weighing up to 20 tons.

Passerines, which include songbirds, evolved and diversified during the Cenozoic Era, becoming the most diverse group of birds.

Angiosperms, also known as flowering plants, became the dominant group of plants during the Cenozoic Era.

The Cretaceous-Paleogene extinction event, also known as the K-T extinction, marked the end of the Mesozoic Era and the beginning of the Cenozoic Era.

Pangea was the supercontinent that existed during most of the Cenozoic Era, gradually breaking up into the continents we know today.

The Ice Age, characterized by periods of glaciation and cooling, occurred during the Cenozoic Era.

Andrewsarchus, a giant carnivorous mammal, is considered to be the largest carnivorous mammal that ever lived.

Cetaceans are the group of mammals that includes whales, dolphins, and porpoises.

Argentavis, a giant flying bird, is considered to be the largest flying bird that ever lived.

Rosaceae is the flowering plant group that includes roses, apples, and plums.

Gigantopithecus, a giant primate, is considered to be the largest primate that ever lived.

Proboscideans are the group of mammals that includes elephants, mammoths, and mastodons.

Rafflesia arnoldii, also known as the corpse flower, is the largest flowering plant that ever lived.