Northgrippian
Geologic time period
In the geologic time scale, the Northgrippian is the middle one of three ages or stages of the Holocene Epoch or Series. It was officially ratified by the International Commission on Stratigraphy in June 2018 along with the earlier Greenlandian... Wikipedia
Occurred: 0.008 million years ago - 0.004 million years ago
Epoch: Holocene
Lower boundary definition: 8.2 kiloyear event
Lower boundary GSSP: NGRIP1 ice core, Greenland; 75°06′00″N 42°19′12″W / 75.1000°N 42.3200°W
Lower GSSP ratified: 14 June 2018
Upper boundary GSSP: Mawmluh Cave, Meghalaya, India; 25°15′44″N 91°42′54″E / 25.2622°N 91.7150°E