The Palaeozoic era contains ____ time periods.
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The Palaeozoic era contains 6 time periods.
1- Cambrian (542 - 488)
2- Ordovician (488-444)
3- Silurian ( 444-416)
4- Devonian (416-359)
5- Carboniferous ( 359 - 299)
6 - Permian ( 299-251)
1- Cambrian (542 - 488)
2- Ordovician (488-444)
3- Silurian ( 444-416)
4- Devonian (416-359)
5- Carboniferous ( 359 - 299)
6 - Permian ( 299-251)
Hisana:
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