At the end of the Mesozoic era, a group of angiosperm or flowering plants began to develop alongside gymnosperm plants. 

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The development of plants.

The Cenozoic era has been an era of mammals and birds. The cooling of the climate did not slow down the success of these warm-blooded animals. The development of both birds and mammals had begun during the Mesozoic era. Birds and mammals evolved into diverse groups of animals in the Cenozoic era. Predators and herbivores spread to the all ecosystems from the tundra to the rainforests.

In the Mesozoic era, most species became extinct. Also in the Cenozoic era, a considerable number of species have become extinct.

Thylacine and many other interesting animals have now become extinct because of one species: the modern human. Is this one species causing a new extinction event?

The great panda is a global symbol of nature conservation. It is feared to become extinct in the near future.