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many marine invertebrates with external skeleton (arthropods) -
The Paleozoic occurs after the disintegration of the supercontinent Pannotia and ends with the formation of the supercontinent Pangea. During most of the era the earth's surface is divided into a relatively small number of continents.This era is divided into six periods: Cambrian, Orodovician, Silurian, Debonian, Carboniferous and Permian In this era mainly lived trilobite, fern and lepidodendron, the first vertebrates, cartilaginous fish, amphibians and reptiles appear.
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Rodinia breaks up. -
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First land plants -
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First Amphibians and fish diversify -
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First reptiles, Pangaea forms -
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reptiles diversify -
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First dinosaurs and first mammals -
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The Mesozoic era is known as the age of the dinosaurs. During this era, Pangea was fragmented and the continents were moving towards their current position. The climate was quite warm and this helped the evolution and diversification of new species. This era is divided into three periods, Cretaceous, Jurassic and Triassic.
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Pangea begins to break up and is first birds are create -
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First plants with flowers and extinction of dinosaurs and ammonites -
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Development and diversification of mammals, first humans -
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The Cenozoic era is known as the era of mammals, since these arose after the extinction of the dinosaurs. During this era, the continents were positioned as we know them today. The weather has been a long-term cooling period. In this era, species began to evolve into what they are today, including humans. This era is divided into two periods, Tertiary and Quatermary.
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Glaciation in the Northern Hemisphere -