Acanthopholis is a typical example of a nodosaur, a family of ankylosaurs characterized by their low-slung profiles and tough coats of armor (in the case of Acanthopholis, formed from oval structures called "scutes.") Where its turtle-like shell stopped, this herbivore sprouted dangerous spikes from its neck, shoulder and tail, which protected it (presumably) from bigger Cretaceous carnivores that tried to turn it into lunch.


