Everybody knows Triceratops, the horned dinosaur from Late Cretaceous North America, who lived 68-66 MYA.
In 2007, Eotriceratops xerinsularis was named and described (Wikipedia). It lived in (what is now) Canada about 68 MYA. It is a little bigger than Triceratops but in many aspect very similar, e.g. they both have long horns and solid frill, and postcranial skeleton. Gregory S. Paul, in his Princton Field Guide to Dinosaurs 2016, suggested putting Eotriceratops xerinsularis in the same genus as Triceratops, renaming it to Triceratops xerinsularis. I find this suggestion appealing, but I know Paul's taxonomy is unorthodox and not mainstream (e.g. I do not agree with the thesis that Torosaurus is merely a full adult Triceratops).
So the question is: can Eotriceratops xerinsularis be put in the same genus as Triceratops and is this suggestion is plausiable enough?