Answers

2015-01-28T22:23:44+05:30
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)
0
Plzz.. mark it as the bst answer! :-)