Epoch

Oligocene Late Devonian Ludlow Early Ordovician Early Triassic Late Cambrian Middle Cambrian Middle Ordovician Late Ordovician Early Cambrian Holocene Pleistocene anthropocene Early Jurassic Late Cretaceous Early Pleistocene Late Jurassic Middle Jurassic Cambrian Series 2 Early Miocene Middle Miocene Early Devonian Middle Devonian Early Cretaceous Palaeocene Pliocene Miocene Eocene Late Triassic Middle Triassic