based on new characteristics and found Stegopeltinae to not be a valid clade. Arbour & Currie (2015) additionally recovered Aletopelta within a polytomy containing Liaoningosaurus, Cedarpelta, Chuanqilong and more derived ankylosaurids. A similar position was recovered by Arbour & Evans (2017) and Rivera-Sylva et al. (2018) but also placed Hylaeosaurus, Crichtonpelta, Gobisaurus and Shamosaurus within the polytomy. Park et al. (2019) also placed Aletopelta within a polytomy but with the inclusion of Jinyunpelta, Nodosaurus and Kunbarrasaurus. Although most often being recovered as a basal ankylosaurid, Frauenfelder et al. (2022) found it to be the basalmost nodosaurid. The results of a phylogenetic analysis conducted by Arbour & Currie (2015) is reproduced below. See also Timeline of ankylosaur research References External links Ankylosaurids Late Cretaceous dinosaurs of North America Fossil taxa described in 2001 Taxa named by James I. Kirkland Paleontology in California Campanian genus first appearances Campanian genus extinctions Ornithischian genera