Dinosaurs » A-Z Dinosaurs List »Ankylosaurus Dinosaur

Ankylosaurus Dinosaur

Ankylosaurus Dinosaur was the last, main, and most famous of the armored dinosaurs known as the Ankylosaurians. Its back and sides were covered with a stiff shell of armor, but its underbelly was uncovered. It also had a great club-like tail that might be used for defense against predators. Ankylosaurus was about the size of an elephant, but had a low-slung, extremely wide body.

Description of Ankylosaurus Dinosaur

Ankylosaurs Dinosaur weighed up to 4.5 Ankylosaurus Dinosaurmetric tons (5 tons), and were about 10 meters (30 feet) long. While they were 1.8 meters (6 feet) wide, there were only 1.2 meters (4 feet) high. Its legs were short, with the stern legs longer than the forelegs. It had five toes on each foot. The flat, triangular skull was thick, significance the brain was quite small. Massive knobs and plates of bone, known as osteoderms, were embedded in the skin of an ankylosaur, as in crocodiles, armadillos, and some lizards. A tough, thorny layer of keratin probably overlay the bone.

Some of these plates were urbanized in short spikes, others fused onto the skull forming hornlets, and a few fused to the end of the tail to form the enormous tail club. The tail was muscular, so it probably made an effective defensive weapon.


Ankylosaurus existed between 65 and 70 million years ago, in the Maastrichian age of the Late Cretaceous era, and was one of the last dinosaurs before they were wiped out by the Cretaceous-Tertiary death event.

They were plant-eaters (herbivores). Being stiff and low-slung, they must have grazed on low-lying plants.

Even giant carnivores of the Maastrichian, like Tyrannosaurus,Deinonychus, and Tarbosaurus, almost certainly could not break through ankylosaur armor. It is supposed they would lie flat on the ground, hiding their soft abdomen from attackers. Like a porcupine, they were only susceptible when flipped over, which was made more difficult by the row of short spikes running down their sides.



Ankylosaurus family

Classification and history of Ankylosaurus Dinosaur

Barnum Brown named the only species in the genera, Ankylosaurus magniventris, in 1908. Fossil remains have been found in Alberta, Canada, as well as in Wyoming and Montana in the United States. Ankylosaurus is now housed at the Canadian Museum of Nature. Euoplocephalus was initially believed to be an ankylosaur, but it now has its own genera.

The remains are fairly complete, including a couple skulls and the signature tail. A track way of an ankylosaur was found in Sucre, Bolivia in 1996, which showed that the massive dinosaur could move quite quickly.

Etymology of Ankylosaurus Dinosaur

The name Ankylosaurus is resulting from the Greek agkylos, meaning "bent" or "crooked", and sauros, meaning "lizard". This refers to the way the bony plates on its back have complex with the thick skin, and the way many of the internal supporting structures like the backbone (vertebrae) and ribs have also fused together.

Ankylosaurus facts:
Name: Ankylosaurus Dinosaur(armored dinosaurs )
Size: 30ft long and 4ft tall
Main Facts: The triangular skull of Ankylosaurus was covered with bony plates. It ended at a horny beak, which it used to crop vegetation.
Rich resources:
Ankylosaurus by Daniel Cohen

Author:Daniel Cohen
Description:Provides information on the physical characteristics, behavior, habits, relatives, and predators of the dinosaur known as Ankylosaurus.

Ankylosaurus by Joanne Mattern

Author:Joanne Mattern
Description:Provides information about ankylosaurus, a heavily armored but slow-moving, plant-eating dinosaur.

Ankylosaurus by Rupert Matthews

Author:Rupert Matthews
Description:Describes about the size, behavior, and surroundings of the long-extinct dinosaur known as ankylosaurus.

Ankylosaurus by Michael Goecke

Author:Michael Goecke
Description:Describes the physical characteristics and behavior of the armored dinosaur Ankylosaurus.

More about Ankylosaurus: Ankylosaurus