^Taxodiaceous conifers from the Maastrichtian type area (Late Cretaceous, NE Belgium, SE Netherlands). R. W. J. M. van der Ham, J. H. A. van Konijnenburg-van Cittert and J. van der Burgh, Review of Palaeobotany and Palynology, Volume 116, Issues 3-4, Sept 2001, pp. 233-250, doi:10.1016/S0034-6667(01)00092-6