stratigraphic intervals 01 (System) Quaternary (2.58 Ma - present) 02 (System) †Tertiary (66.0 - 2.58 Ma) 03 (System) †Cretaceous (145.0 - 66.0 Ma) 04 (System) †Jurassic (201.3 - 145.0 Ma) 05 (System) †Triassic (251.902 - 201.3 Ma) 06 (System) †Permian (298.9 - 251.902 Ma) 07 (System) †Carboniferous (358.9 - 298.9 Ma) 08 (System) †Devonian (419.2 - 358.9 Ma) 09 (System) †Silurian (443.8 - 419.2 Ma) 10 (System) †Ordovician (485.4 - 443.8 Ma) 11 (System) †Cambrian (541.0 - 485.4 Ma) 12 (System) †Vendian