A systematic review of ankylosaurian dinosaur remains from the Albian-Cenomanian of England

Ankylosaur material from the upper Lower Cretaceous to lower Upper Cretaceo us (Albian-Cenomanian) of south-eastern England is reviewed systematically. 'Acanthopholis horridus' from the Lower Chalk of Folkestone (Kent) is rega rded as a nomen dubium. A re-evaluation of the ankylosaur specimens from th e Cambridge Greensand (mostly probably reworked from the underlying Gault C lay) suggests that all of the species of 'Acanthopholis' erected by Seeley, on the basis of fragmentary, and often composite, non-diagnostic material, are invalid. Anoplosaurus curtonotus Seeley is removed from the Ornithopod a, and provisionally regarded as a valid taxon of nodosaurid ankylosaur. A lectotype, a partial scapula, is designated for this species. Anoplosaurus appears to be a relatively primitive nodosaurid which retains several plesi omorphic features in the lower jaw, sacrum and appendicular skeleton.