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Many marine invertebrates with external skeletons -
The Paleozoic or Paleozoic era is a division of the geological time scale that belongs to the Phanerozoic eon, with the category of era (as time) and erathem (as a set of rocks).
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Widespreadmarine algae fish without jaws -
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First land plantas -
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Fish diversity
first amphibians -
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Forest of giant fems
First reptiles -
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Reptiles diversity -
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First dinosaurs
First mammals -
The Mesozoic, was Mesozoic or secondary era, known zoologically as the age of the dinosaurs or botanically as the age of the cycads
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Gymnosperm plants dominate the Earth,s surface
Dinosaurs diversity
First flying and aquatic reptiles
First birds -
Gymnosperm plants dominate the Earth,s surface
Dinosaurs diversity
First flying and aquatic reptiles
First birds -
First plants with flowers
Extinction of dinosaurs and ammonites -
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development and diversification of mammals
alpine orogeny begins -
The Cenozoic Era began with the extinction of the dinosaurs approximately 66 million years ago. ... It is also known as the "Age of mammals", since this was the privileged way of life throughout its 66 million years of duration. Furthermore, it is the Age in which the human being made his appearance.
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development and diversification of mammals
Glaciaton in the Northern Hemisphere -