Genus: Polacanthus FOX, 1865 (OWEN, vide HULKE, 1881)
Etymology: Greek, polys, “much, many”, and Greek, akantha, “spine, thorn” + us: “Many spined one”.

Species: foxii HULKE, 1881

Locality: Compton Bay Beach, Isle of Wight County, England, Southern United Kingdom.

Horizon: Wealden Shales, Vetis Formation.


Age: Upper Barremian Stage, Lower Gallic Subepoch, Middle Early Cretaaceous Epoch, Early Cretaceous.


BMNH R9293 (Blows Collection): 3 skull fragments, ?nasal, supraoccipital, angular, left neural arch of atlas, (?) fourth cervical vertebra, four dorsal vertebrae and vertebral process, sacrum with part neural arch, two caudal vertebrae (?first and second), two fragments of ilium, portion of ischium, two ribs complete, parts of three more ribs, rib head and fragments, terminal phalanx, ossified tendons, numerous endoskelatal fragments, five dermal plates (caudal series), four dermal spines (presacral series), two dermal spines (presacral series), one spiked plate (?caudal), 10 large pieces of sacroiliac shield, 15 smaller pieces of sacro-iliac shield, 36 dermal ossicles, numerous dermal fragments, small complete bone (one side of bilateral pair) of unknown origin.

Note: Has 2 proximal caudal vertebrae with unusual spicules of bone on teh distal ends of the neural spines. (ARBOUR & CURRIE, 2011)