Cenozoic Era Quaternary Period Pleistocene Epoch Holocene Epoch Base of Holocene younger bound -0.0082 Ma Late Pleistocene Age Phanerozoic Eon Northgrippian Age a1.1.1.1.1.3 Base of Northgrippian Geologic Time Scale (2018) Greenlandian Greenlandian Age older bound -0.0117 Ma