Origin and early diversification of Phylum Cnidaria: key macrofossils from the Ediacaran system of North and South America - Van Iten, Heyo; Leme, Juliana de Moraes; Pacheco, Mírian Liza Alves Forancelli; Simões, Marcello Guimarães; Fairchild, Thomas R.; Rodrigues, Fabio; Galante, Douglas; Boggiani, Paulo César; Marques, Antonio Carlos (The Cnidaria, past, present and future: the world of Medusa and her sisters, 2016)