Neoproterozoic
Aeonothem | Arathem | system | Age ( mya ) |
---|---|---|---|
later | later | later | |
P r o t e r o z o i k u m Duration: 1959 Ma |
Neoproterozoic Jungproterozoikum Duration: 459 Ma |
Ediacarium | 541 ⬍ 635 |
Cryogenium | 635 ⬍ 720 |
||
Tonium | 720 ⬍ 1000 |
||
Mesoproterozoic Mittelproterozoikum Duration: 600 Ma |
Stenium | 1000 ⬍ 1200 |
|
Ectasium | 1200 ⬍ 1400 |
||
Calymmium | 1400 ⬍ 1600 |
||
Paleoproterozoic Altproterozoikum Duration: 900 Ma |
Statherium | 1600 ⬍ 1800 |
|
Orosirium | 1800 ⬍ 2050 |
||
Rhyacium | 2050 ⬍ 2300 |
||
Siderium | 2300 ⬍ 2500 |
||
earlier | earlier | earlier |
The Neoproterozoic ( = Young Proterozoic ) is the youngest section of the Proterozoic . At the end of this era , the Precambrian (“primeval earth times”) also ended. The Neoproterozoic begins about 1000 million years ago and ends about 541 million years ago.
biology
During this time multicellular life arose on earth. Microorganisms first appeared on earth around 3,800 million years ago. See also geological timescale .
After the Mesoproterozoic already unicellular organisms with cell nucleus ( eukaryotes were present), multicellular emerged during the Neoproterozoic plants and invertebrate animals in many different tribes and formed the basis for the transition to the Phanerozoic , starting with the Cambrian , the first period of the Palaeozoic ( Paleozoic ) . During the Neoproterozoic, the continents near the equator at that time were repeatedly iced, which are interpreted as ice ages with presumably global icing (" snowball earth ").
Subdivision of the Neoproterozoic
The subdivision of the Neoproterozoic and adjacent periods:
- Eon : Phanerozoikum (541-0 mya )
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Eon : Proterozoikum (2500-541 mya)
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Era : Neoproterozoic (1000-541 mya)
- System : Ediacarium (635-541 mya)
- Period : Cryogenium (720–635 mya)
- Period: Tonium (1000–720 mya)
- Era: Mesoproterozoic (1600–1000 mya)
- Era: Paleoproterozoic (2500–1600 mya)
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Era : Neoproterozoic (1000-541 mya)
- Eon: Archean (4000-2500 mya)
- Eon: Hadean (4600-4000 mya)
See also
Individual evidence
- ↑ a b c J G Ogg, Gabi Ogg and FM Gradstein: A Concise Geologic Timescale . Elsevier, 2016, ISBN 978-0-444-59468-6 , pp. 23-26, 29-36 .