Fensome et al., 2007
From dinoflaj3
Fensome, R.A., Guerstein, G.R. and Williams, G.L., 2007: New insights on the Paleogene dinoflagellate cyst genera Enneadocysta and Licracysta gen. nov. based on material from offshore eastern Canada and southern Argentina. Micropaleontology, v.52, no.5, p.385-410, pl.1-5. (Cover date 2006, issue date 2007)