It was 3 to 5.5 m in Length,It's Height is Unknown.
The dinosaur’s name refers to the its armour (Greek akantha meaning ‘spine’ or ‘thorn’ and pholis meaning ‘scale’). Acanthopholis’s armour consisted of oval plates set almost horizontally into the skin, with 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 to range of 3 5.5 meters (10 to 18 ft) long and approximately 380 kilograms (840 lb) in weight.
A find of a braincase and some postcranial elements was discovered in England in 1867, and was named Acanthopholis horridus by Thomas Huxley. Acanthopholis is an invalid name in some sources, which state that not enough information has been collected to tell that the find is anything more than a nodosaur.