†subfamily Polacanthinae Lapparent and Lavocat 1955 (ankylosaurid)
Reptilia - Ornithischia - Ankylosauridae
Parent taxon: Ankylosauridae according to K. Carpenter and J. I. Kirkland 1998
See also Blows 2001, Carpenter et al. 1996, Carpenter et al. 1999, Kirkland 1998, Pereda Suberbiola and Galton 2001, Vickaryous and Ryan 1997 and Yang et al. 2013
Sister taxa: Ahshislepelta, Aletopelta, Ankylosaurinae, Bissektipelta, Cedarpelta, Chuanqilong, Datai, Dyoplosaurus giganteus, Gobisaurus, Liaoningosaurus, Maleevus, Minmi, Palaeoscincus asper, Shamosaurinae, Shamosaurus, Stegopeltinae, Syrmosaurinae
Subtaxa: none
Type: Polacanthus
Ecology: ground dwelling herbivore
Distribution:
• Cretaceous of United States (2: Utah collections)
Total: 2 collections each including a single occurrence