Template:Quaternary (period)/sandbox

Subdivisions of the Quaternary System
System/ Period	Series/ Epoch	Stage/ Age	Age (Ma)
Quaternary	Holocene	Meghalayan	0	0.0042
		Northgrippian	0.0042	0.0082
		Greenlandian	0.0082	0.0117
	Pleistocene	'Tarantian'	0.0117	0.126
		'Chibanian'	0.126	0.781
		Calabrian	0.781	1.80
		Gelasian	1.80	2.58
Neogene	Pliocene	Piacenzian	2.58	3.60
Notes and references }}Subdivision of the Quaternary period according to the ICS, as of 2018. For the Holocene, dates are relative to the year 2000 (e.g. Greenlandian began 11,700 years before 2000). For the begin of the Northgrippian a date of 8,236 years before 2000 has been set. The Meghalayan has been set to begin 4,250 years before 2000, apparently from a calibrated radio-carbon date of 4,200 years BP i.e. before 1950. 'Chibanian' and 'Tarantian' are informal, unofficial names proposed to replace the also informal, unofficial 'Middle Pleistocene' and 'Upper Pleistocene' subseries/subepochs respectively. In Europe and North America, the Holocene is subdivided into Preboreal, Boreal, Atlantic, Subboreal, and Subatlantic stages of the Blytt–Sernander time scale. There are many regional subdivisions for the Upper or Late Pleistocene; usually these represent locally recognized cold (glacial) and warm (interglacial) periods. The last glacial period ends with the cold Younger Dryas substage.