Introduction The Ankylosauridae is a monophyletic clade of herbivorous, armored ornithischian dinosaurs that are predominantly recorded from the Late Cretaceous (Turonian—late Maastrichtian) of Asia and latest Cretaceous (early Campanian—late Maastrichtian) of western North America (Laramidia) (Lambe, 1902; Brown, 1908; Parks, 1924; Nopcsa, 1928; Sternberg, 1929; Gilmore, 1933; Maryańska, 1977; Sullivan, 1999; Carpenter, 2004; Miles & Miles, 2009; Arbour, Burns & Sissons, 2009; Arbour &...