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Palaeogene Period
65.5 to 23.03 years ago -
Paleocene Epoch
65-54 mya. First epoch of the Cenozoic era. -
Dinosaurs are now extinct
Dinosaurs and many other groups of reptiles from the earlier Cretaceous period are now all extinct. -
Surviving mammals expand
The mammals that survived the Cretaceous period start expanding rapidly. -
flightless birds
Large, flightless birds appear, such as the Diatryma -
Angiosperms
Angiosperms, or flowering plants, are plentiful. -
Bivalves & Gastropods
In oceans, bivalves and gastropods replace ammonites -
Sharks and Teleost
Sharks and Teleost fishes are abundant in oceans. -
Eocene Epoch
The Eocene epoch began 38 mya years ago and lasted about 17 million years. -
Rodents
Rodents become the dominant small mammal. -
small horses
Small horses are common, such as Hyracotherium. -
Rhinos and Elephants
Early rhinoceroses and elephants arise -
Uintatherium
The uintatherium, an extremely large herbivore that resembles an elephant, flourishes. -
birds
Some birds include geese, ducks, herons, owls, and hawks -
marine mammals
Marine mammals such as whales first appear. -
Oligocene Epoch
The Oligocene Epoch is the last epoch of the Palaeogene period and goes from 38 mya to 25 mya -
Camels, sloths, armadillos
Camels, sloths, and armadillos make their appearance -
Mammals
Dogs, cats, rhinos, and pigs all become prominent. Horses also flourish. -
Ants and Termites
Ants and termites appear. -
Neogene period
23.03 to 2.6 million years ago -
Miocene Epoch
The first epoch in the Neogene period, starting 23.03 mya and lasting 20 mya, the longest out of all the epochs in the cenozoic era. -
deer
The first deer appear. -
Giraffe
The first modern day giraffe appear. -
Hyena
The first modern day hyenas make their appearance. -
Sabre tooth
The dominant hunting species was the sabre toothed cat. -
In the Seas
In the seas, whales and giant sharks were numerous. Corals were also plentiful. -
Pliocene Epoch
The last epoch of the Neogene period begins 5 mya and spans for 3.2 million years. -
Bovids
The bovids are the primary mammals, such as sheep, goats, cattle, antelope, and gazelles. -
Rodents
Rodents such as beavers and ground-squirrels are plentiful -
Sabre toothed carnivores
Along with sabre toothed cats, dogs, stauts, and weasels are present. -
Primates
Many primates appear, including early age human. -
quaternary period
2.6 mya to present -
Pleistocene Epoch
The Pleistocene epoch begins 1.8 mya and ends with the conclusion of the Ice Age. -
Ice Ages
This epoch is dominated by the Ice Ages when extensive ice sheets spread towards the equator from both the Antarctic and Arctic regions, covering much of Europe and North America. -
Ice Age mammals
Sabre-toothed cats, cave lions, cave bears, giant deer, woolly rhinoceroses, and woolly mammoths all roamed during this epoch. -
Holocene Epoch
the period of geological time since the end of the last Ice Age 10,000 years ago to the present. -
Man on the Moon
In 1969, Neil Armstrong became the first man to walk on the moon.
