of non-diagnostic ankylosaur and ornithopod remains. For example, the metatarsals included in the syntype series of Acanthopholis platypus are from a sauropod, but the remaining syntypes are not. They also found two previously unpublished names which Seeley had used to label museum specimens: "Acanthopholis hughesii" indicated SMC B55463-55490 and "Acanthopholis keepingi" SMC B55491-55526. Both names were not proposed by them as new species and are nomina nuda. Syngonosaurus was synonymised with Acanthopholis in 1999, but the genus was reinstated in a 2020 study, when Syngonosaurus and Eucercosaurus were reinterpreted as basal iguanodontians. Description The armour of Acanthopholis consisted of oval keeled plates set almost horizontally into the skin, with long spikes protruding from the neck and shoulder area, along the spine. Acanthopholis was quadrupedal and herbivorous. Its size has been estimated to be in the range of 3 to 5.5 meters (10 to 18 ft) long and approximately 380 kilograms (840 lb) in weight. Classification Acanthopholis was originally assigned to the Scelidosauridae by Huxley. In 1902 Nopcsa created a separate family Acanthopholididae. Later, he named Acanthopholinae as a subfamily. In 1928, he corrected Acanthopholididae to Acanthopholidae. Today Acanthopholis is considered a member of the Nodosauridae within the Ankylosauria. See also Timeline of ankylosaur research References References External links Acanthopholis data sheet at Dinodata.de (in German) Nodosaurids Cenomanian life Late Cretaceous dinosaurs of Europe Cretaceous England Fossils of England Fossil taxa described in 1867 Taxa named by Thomas Henry Huxley Nomina dubia Ornithischian genera