エウオプロケファルス Euoplocephalus オーストラリア恐竜大陸
Ornithischia / Genasauria / Thyreophoroidea / Eurypoda / Ankylosauria
/ Family: Ankylosauridae
/ First Described: 1910 / Found: North America; Canada, USA
/ Length: 6m / Weight: 2.5t
/ Food: Plants / Young: Eggs / Lived: Late Cretaceous 78－68 mya
'Reptilian tanks' were commonplace during the late Cretaceous, between 70 and 65 million years ago. Herds of Ornithischians with protective body armour dominated the open lands of North America. Their protective armour greatly increased their chances of a long life. Euoplocephalus was particularly suited to the time and environment.
Its armour covered almost the whole of its body, from the tip of its nose to the end of its tail.
Euoplocephalus, and its close relatives may have had a particularly good sense of smell which would have helped it to find food, avoid enemies and seek out a mate. Its head was more rounded than that of Ankylosaurus, with a broader beak and teeth in the palate (roof of the mouth). Euoplocephalus probably fed on a wide variety of plant material.
Apart from its 'suit of mail', Euolplocephalus was blessed with sturdy spines on the back of its head and rows of plates and spikes along its back. The last part of its tail was stiffened by a sheath of bony rods and tipped by a huge, bony, mace¬ like ball. The animal could use its tail as a club 'to protect it from predators or during fights with other dominant males.