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Period: 541 BCE to 359 BCE
Palaeozoic (era)
The palaeozoic era has many periods (Cambrian, Ordovician, Silurian, Devonian, Carboniferous and Premian) in the Cambrian period mant marine invertebrades apered with the first great extintion coming soon after with the ordovician period, in the Silurian period the first land plants started to develop after came the Devonian period where fish started to become more diverse and where the first amphibians aperear. a few years after the start of the Devonian era the Carboniferous period started. -
Period: 541 BCE to 485 BCE
Cambrian (Period)
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Period: 485 BCE to 444 BCE
Ordovician (Period)
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Period: 444 BCE to 419 BCE
Silurian (Period)
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Period: 419 BCE to 359 BCE
Devonian (Period)
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Period: 359 BCE to 252 BCE
Paleozoic (era) pt.2
in the Carboniferous period forest of giant ferns began to grow and the and the anphibians evolved in to the first reptiles at the end of the Carboniferous period in the year 299 BC the Permian period began bringing diverse reptiles with it. -
Period: 359 BCE to 299 BCE
Carboniferous (Period)
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Period: 299 BCE to 252 BCE
Permian (Period)
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Period: 252 BCE to 201 BCE
Triassic (Period)
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Period: 252 BCE to 145 BCE
Mesozoic (era)
With the begining of the Mesozoin era coming along a few more periods apereard (Triasic, Jurasic and Cretaceous). With the begining of the Triasic period the dinasaurs and mammals started to apear through the evolucion of the reptiles, shortly after i the Jurasic period a lot of changes started to hapen around the earth like the dinasaurs becoming more diverse, the apearense of the first flying and aquatic reptiles and gymnosperm plants begining to do dominate the earths surface. -
Period: 201 BCE to 145 BCE
Jurassic (Period)
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Period: 145 BCE to 66 BCE
Mesozoic (era) pt.2
the Createceous period started and ended quikly with the extintion of dinasaurs and ammonites and the first sing of plants with flowers. -
Period: 145 BCE to 66 BCE
Cretaseous (Period)
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Period: 66 BCE to 2 BCE
Tertiary (Period)
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Period: 66 BCE to
Cenozoic (era)
with this era came two periods (Quaternary and Tertiary) and in both the development and diversity of mammals apeared and are still developing. -
Period: 2 BCE to
Quaternary (Period)