FOR AGES 3 YEARS TO 18 YEARS
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Ankylosaurus magniventris was a heavily armored dinosaur that possessed bony plates and a large protrusion at the tails, making it more of a clubbed tail. Ankylosaurus means 'fused lizard' in Greek and was awarded with the name owing to its armor-like boney skin and the fusion of its skull with the rest of its body. The dinosaur, therefore, looked extremely rugged. The Ankylosaurus was powered by an unusually small brain, practically the size of a walnut. Ankylosaurus, therefore, has similarities with its close cousin Stegosaurus, the most dim-witted dinos of all times! When fully developed, an adult bony Ankylosaurus weighed as much as 10,582.2-17,637 lb (4,800-8,000 kg). Ankylosaurus magniventris hail from the Late Cretaceous period, about 65.5 million to 66.8 million years ago and were discovered in the western United States and Alberta, Canada.
For more relatable content, check out these Mymoorapelta facts and Palaeoscincus facts for kids.
The name of this therizinosaur theropod dinosaur with bony plates and clubbed tail, Ankylosaurus, is pronounced 'ANK-ill-oh-SORE-us' or 'ank-EYE-low-SORE-us'.
The Ankylosaurus magniventris was part of a group of dinosaurs known as Thyreophorans (armored dinosaurs). They were thick and soft-bellied primarily and couldn't even be tipped over by a T. rex, that weighed almost twice as much as the Ankylosaurus.
From the remains of the family of this Ankylosaurus, it is estimated that these dinosaurs lived during Maastrichtian of the Cretaceous period, approximately 90 million years ago.
According to their fossil discovery, it has been approximated that the last recorded appearance of these Ankylosaurus sauropods was around 66 mya in the natural history of the Maastrichtian Cretaceous period. Therefore, the timescale precisely sums up the time between the Campanian Age to 66 million years ago.
According to the discovery of the Ankylosaurus (genus Ankylosaurus) fossils, the club-tailed species have been found in Canada, Alberta-Horseshoe Canyon Formation, Scollard Formation, USA, Montana-Hell Creek Formation, New Mexico-Kirtland Formation, Wyoming-Ferris Formation, Lance Formation region in the world, where the armored body remains have been discovered.
The Ankylosaurus dinosaur had a life in a terrestrial habitat in the southern US and Mexico regions. According to research on dinosaur species, historic rivers and streams are thought to be the preferred regions for dinosaurs. The Ankylosaurus resided upon natural forested floodplains and densely vegetated swamps, seasides, wooded area segments, and lakes. The Ankylosaurus wildlife areas had resources to serve their more than usual appetite in their lifetime.
The Ankylosaurus specimen has been found from the Middle to Late Cretaceous period with other dinosaur species like Oviraptor, Segnosaurus, Khaan, and Tarbosaurus.
Ankylosaurus dinosaurs are believed to have lived from the Middle to the Late Cretaceous period, approximately from the Campanian Age to 66 million years ago.
Based on the natural armored group features, the reproduction of this dinosaur is believed to have been oviparous. This means that such an animal is believed to reproduce by laying eggs.
The Ankylosaurus had armor plates, even the eyelids were armored! From the fossils of the Ankylosaurus that have been discovered, we can tell that they had a considerable weight, a huge tail that they swung, spikes, and soft bellies. Osteoderms ran throughout the top and were so massive that they had often been the only high-quality preserved components of the animal. Particularly massive plates and panels protected the shoulder and neck with smaller portions inside the center to permit movement. Four massive horns protruded from the bottom of the armored skull, possibly to save these herbivorous dinosaurs from massive predators. The skeleton at the tail lobe forming the club tail consisted of several massive osteoderms fused with the terminal vertebrae. In the beginning, the tails were mainly meant for protection when in opposition with predators.
The notably exquisite feature of Ankylosaurus is the brown, tough, almost knobby armor masking its head, neck, back, and tail. These plates covered quite a lot of the body besides its smooth underbelly. This armor was derived from densely packed osteoderms, or 'scutes' deeply embedded plates of bone (which were not related to the relaxation of Ankylosaurus' skeleton) and included a thick layer of keratin, the same protein that is contained in human hair and rhinoceros horns.
The resources found suggest that this dinosaur possessed a skull, teeth, osteoderms, vertebrae, limb bones, ribs, tail club, all from several fossil locations.
It is not known exactly how the Ankylosaurus communicated with each other or with dinosaurs of other species. But Philip J. Senter, an American paleontologist known for his research on the paleobiology of dinosaurs, when reviewing the sounds of prehistoric land animals believed that dinosaurs used to communicate by hissing and clapping, polishing the jaws against the upper jaw, rubbing scales against each other, and using environmental materials such as spray against water.
Dinosaurs are also believed to have communicated vocally and visually. These two types of communication were most commonly used during the defensive posture, courtship, and territorial fighting.
The exact measurements regarding an Ankylosaurus' height and length are unknown. However, an Ankylosaurus' size can be estimated from the largest known remains of a 25 in (63.5 cm) long skull. From this, we can predict that an Ankylosaurus was at least 20.5 ft (6.2 m) in length. The exact details are uncertain, but they nearly had a size equal to 20.5 ft (6.2 m) long and 5.6 ft (1.7 m) tall at the hips.
Although not a predator, they can be considered actively mobile when in need. The Ankylosaurus was quadrupedal, meaning it could walk on four legs. The top speed of an Ankylosaurus is estimated only to have been up to 6 mph (9.7 kph) because it was very heavy in weight. As a rule, slow, armored, plant-munching, club-tailed animals had a main defensive strategy of passivity consisting of flopping down on the ground and lying motionless, and swinging their club tails from side to side.
The weight of this Cretaceous Ankylosaurus is based on the classification of the specimen collected. This dinosaur is estimated to have weighed around 10,582.2-17,637 lb (4,800-8,000 kg).
Female and male Ankylosaurus dinosaurs are not given any different names.
Since the Ankylosaurus reproduced by laying eggs and the babies hatched from the eggs, a baby Ankylosaurus can be called hatchling or nestling. This generalized term can be used for all dinosaurs since they were all hatched from eggs. In the case of theropods, dinosaurs that resembled birds, a baby theropod can also be referred to as a chick.
Primarily a herbivore, the Ankylosaurus with a tail club grazed on low-lying plants since it moved on its four legs. They were dependant on ferns and munching grass for their survival. The narrow beak at the end of its skull helped it strip leaves from the plants.
The predators of these dinosaurs included Tyrannosaurus, Tarbosaurus, and Deinonychus.
They had passive defensive strategies to save themselves from predators like lying down motionless and swinging their tails. They had a plant-based and herbivorous diet that could be easily provided by natural resources. These features of the Ankylosaurus force paleontologists to call them a living tank.
The armor plates of the Ankylosaurus would have acted as a shield. They were extremely impenetrable. Armored dinosaurs also had cold-blooded metabolism. The K/T Extinction event, therefore, was easily sustained by the Ankylosaurus. Their extinction took place 65 million years ago since there was a shortage of food they depended on. This fern and munching grass species had already been wiped off the Earth by the impact of the Yucatan meteor event.
All dinosaurs had tails in different shapes and for different purposes like the Ankylosaurus had clubbed hammer-tail.
Ankylosaurus literally means 'fused lizard' in Greek. The Ankylosaurus was given this name because the fossils suggested that the bones in its skull and other parts of its body were fused, making the dinosaur extremely rugged.
The Ankylosaurus is unique in the sense that they lacked any grinding teeth. The jaw began in a beak that was followed by teeth. The teeth were leaf-like and placed at a considerable distance towards the back. The specimens were discovered by Peter Kaisen. The American Museum of Natural History supported an expedition in 1906. Barnum Brown led this group in the Hell Creek region, near Gilbert Creek - Montana. The specimen consisted of the skull bone, two teeth, shoulder girdle bone, vertebrae ribs, and osteoderms or armored plates. The teeth were not very wide and small in size as well. Ankylosaur dinosaurs had large skulls, which meant they had more teeth though smaller in size in the history of dinosaurs.
Here at Kidadl, we have carefully created lots of interesting family-friendly animal facts for everyone to discover! Learn more about some other dinosaurs from our Pinacosaurus interesting facts and Anadontosaurus surprising facts pages.
You can even occupy yourself at home by coloring in one of our free printable stomping dinosaur coloring pages.
Read The Disclaimer
At Kidadl we pride ourselves on offering families original ideas to make the most of time spent together at home or out and about, wherever you are in the world. We strive to recommend the very best things that are suggested by our community and are things we would do ourselves - our aim is to be the trusted friend to parents.
We try our very best, but cannot guarantee perfection. We will always aim to give you accurate information at the date of publication - however, information does change, so it’s important you do your own research, double-check and make the decision that is right for your family.
Kidadl provides inspiration to entertain and educate your children. We recognise that not all activities and ideas are appropriate and suitable for all children and families or in all circumstances. Our recommended activities are based on age but these are a guide. We recommend that these ideas are used as inspiration, that ideas are undertaken with appropriate adult supervision, and that each adult uses their own discretion and knowledge of their children to consider the safety and suitability.
Kidadl cannot accept liability for the execution of these ideas, and parental supervision is advised at all times, as safety is paramount. Anyone using the information provided by Kidadl does so at their own risk and we can not accept liability if things go wrong.
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