The Anthropocene is a prospective epoch/series, not a geological event

Martin J. Head, Jan A. Zalasiewicz, Colin N. Waters, Simon D. Turner, Mark Williams, Anthony D. Barnosky, Will Steffen, Michael Wagreich, Peter K. Haff, Jaia Syvitski, Reinhold Leinfelder, Francine M.G. McCarthy, Neil L. Rose, Scott L. Wing, Zhisheng An, Alejandro Cearreta, Andrew B. Cundy, Ian J. Fairchild, Yongming Han, Juliana A. Ivar do SulCatherine Jeandel, J. R. McNeill, Colin P. Summerhayes