Geologic time scalePhanerozoicPaleozoicEraPaleozoicPart ofPhanerozoic EonContainsCambrian 541 - 485.4 Million Years AgoCarboniferous 358.9 - 298.9 Million Years AgoDevonian 419.2 - 358.9 Million Years AgoOrdovician 485.4 - 443.8 Million Years AgoPermian 298.9 - 252.2 Million Years AgoSilurian 443.8 - 419.2 Million Years Ago← The whole time scale