Editing Ediacaran (section)

== Subdivisions ==
[[File:Nou Fonts Ediacaran.jpg|thumb|
Outcrops of Ediacaran micaschists and marble (c. 600 Ma) in the eastern Pyrenees (commune of Fontpédrouse, France).<ref>B. Laumonier et al., [http://ficheinfoterre.brgm.fr/Notices/1099N.pdf ''Notice explicative de la feuille Prats-de-Mollo-La-preste (1099) à 1/50 000''], BRGM Éditions, Orléans, 2015, pages 22-23 (bC1 - « ...niveau de marbres calcaires et dolomitiques M1...(dans les) hautes vallées de la Ribérole et de la Carança M1 est formé de 2 ou 3 niveaux décamétriques très continus.  », ''ficheinfoterre.brgm.fr''.</ref>]]
The Ediacaran Period is not yet formally subdivided, but a proposed scheme<ref name="Xiao2016">{{cite journal | title=Towards an Ediacaran Time Scale: Problems, Protocols, and Prospects | first1=Shuhai | last1=Xiao | first2=Guy M. | last2=Narbonne | first3=Chuanming | last3=Zhou | first4=Marc | last4=Laflamme | first5=Dmitriy V. | last5=Grazhdankin | first6=Malgorzata | last6=Moczydlowska-Vidal | first7=Huan | last7=Cui | journal=Episodes | year=2016 | volume=39 | issue=4 | pages=540555 | doi=10.18814/epiiugs/2016/v39i4/103886 | doi-access=free }}</ref> recognises an Upper Ediacaran whose base corresponds with the [[Gaskiers glaciation]], a Terminal Ediacaran Stage starting around {{Ma|550}}, a preceding stage beginning around 575 Ma with the earliest widespread [[Ediacaran biota]] fossils; two proposed schemes differ on whether the lower strata should be divided into an Early and Middle Ediacaran or not, because it is not clear whether the Shuram excursion (which would divide the Early and Middle) is a separate event from the Gaskiers, or whether the two events are correlated.