Pu, Judy P.; Bowring, Samuel A.; Ramezani, Jahandar; Myrow, Paul; Raub, Timothy D.; Landing, Ed; Mills, Andrea; Hodgin, Eben et al. (2016). “Dodging snowballs: Geochronology of the Gaskiers glaciation and the first appearance of the Ediacaran biota”. Geology44 (11): 955. doi:10.1130/G38284.1.