Scott Sampson's paper on the Two Medicine Formation ceratopians appears in the current issue of _Journal of Vertebrate Paleontology_ (volume 15 #4): 743-760. Accordingly, the following names are no longer _nomina nuda_, and the attributions change to: Achelousaurus Sampson, 1995 Einiosaurus Sampson, 1995 Genera count remains stable at 774.