Polacanthus. Species: P. foxii, P. rudgwickensis. Meaning of name: Many spikes.
Southern England, Barremian stage of the early Cretaceous. Classification: Thyreophora, Ankylosauria, Polacanthidae. Length: 4m. Lifestyle: browser. Background is a photo of Lake Mont Bell near Carcassonne South of France.
They poll vaulted then swung their arms forwards to generate extra lift & to get them near the centre point of gravity; the animal with a feather crest is Baryonyx.