Dinosaur Compendium Maximus
|Binomial name(s):||Ankylosaurus magniventris|
|Maximum known size:||30 feet|
|Lived when:||Late Cretaceous Period, 66.5-65.5 Ma|
|Classification:||Order: Ornithischia; Family: Ankylosauridae; Subfamily: Ankylosauridae; Genus: Ankylosaurus|
From the Greek words αγκυλος/ankulos ('curved') and σαυρος/sauros ('lizard'). MEANING "fused lizard"
Ankylosaurus was a large animal by modern standards, estimated at lengths of 9 m (30 ft) and weighing up to 6 tonnes (13,000 lb).
The body shape was low-slung and quite wide.
The most obvious feature of Ankylosaurus is its armour, consisting of massive knobs and plates of bone, known as osteoderms or scutes, embedded in the skin. Osteoderms are also found in the skin of crocodiles, armadillos and some lizards.
The plates were aligned in regular horizontal rows down the animal's neck, back, and hips, with the many smaller nodules protecting the areas between the large plates.
The famous tail club of Ankylosaurus was also composed of several large osteoderms, which were fused to the last few tail vertebrae. It was heavy and supported by the last seven tail vertebrae, which interlocked to form a stiff rod at the base of the club.
Ankylosaurus was named as the type genus of the family Ankylosauridae. Ankylosaurids are members of the larger taxon Ankylosauria, which also contains the nodosaurids.
Ankylosaurus was named by American palaeontologist Barnum Brown, in 1908.
Ankylosaurus was hanging around between 66.5 to 66 million years ago, in Late Cretaceous Period.