If the question of ‘what dinosaur had 500 teeth? mingling in your brain, make sure you read this article.

History of Dinosaur Has 500 Teeth

Dinosaurs are diversified groups of reptiles of the kingdom Animalia and belong to the Dinosauria species.  Initially, they showed up on earth in the Triassic period probably somewhere between 233 and 243 million years ago. The exact time of origin and evolution is still under research. They existed on earth millions of years ago but now they are closely linked to archaic and the modern birds of today.

They were a diverse and flourishing group of animals present on earth until a huge asteroid bumped into the earth about 66 million years ago. At that time, most of them were equal to horses or dogs in size but after that, they got transformed into the most gigantic creatures ever found on this planet earth. 

Transformation with Time

Dinosaur kept on transforming with time. Few types, who used to eat meat, transformed with time and grew into birds. The ones who transformed into birds are called avians while the ones who got extinct are called non-avians. 

During the time during which they existed, they changed the world entirely. When they initially existed in the Triassic period they only inhabited the continent of Pangaea. But when the asteroid banged into the earth all the continents were almost in a similar place as they are now. Different types of them had different characteristics and ways of living and they varied from one another in terms of shape, size, teeth and other things. 

Each type of it had different sizes and shapes. Some were gigantic, some were small and some were medium in size while all had different shapes having horns and tails. Some of them had no teeth, some had a small number of teeth while what dinosaur has 500 teeth name is called Nigersaurus. It can even have more.

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  • Existence: All of them existed in the Mesozoic era which is approximately 243 to 43 million years ago. It is understood that not all the animals at that time were these creatures but they inhabited various ecological colonies with many other animals like mammals, insects and amphibians along with them.
  • Place of existence: almost all of them inhabited land but some of them were able to cross or swim in the water. Though, they did not prefer to live in water bodies like rivers, oceans or lakes.
  • Vertebrates: All of them were vertebrates, meaning all were having a backbone regardless of shape, size and type. They all had the same features as the skeleton.
  • Gait: Their gait was very similar to birds. Their legs were propped just below their bodies. This habituation helped them to live longer and made them expert runners as well as helped them greatly in walking.
  • Diapsids: All of them used to have holes in the skull just at the back of their eyes which was a great source for the facial bones to attach themselves there easily.
  • Teeth: They are different from each other in terms of having teeth. Many of them did not have teeth in their mouth like gallimimus while some of them had very big cone-shaped teeth. In addition to this, there was a dinosaur with 500 teeth or more and it was named Nigersaurus.


In 2021, there were a total of 1,545 species of them discovered and elaborated by scientists. But they are not discussed publicly more often. All of the types are divided into three groups which include Theropoda, Sauropodomorpha and Ornithischia.

First Group: Theropoda

Theropoda is the first group mentioned above and it includes those who eat meat meanwhile some of them had shifted to being omnivorous or herbivorous including Chilesaurus Diegosuarezi. This group comprises Dilophosaurus Wetherilli, Ceratosaurus Nasicornis, Achillobator Giganticus and many more. 

Most of them had long legs, hollow bones, were slender, three-fingered and were bipedal.They have sharp and crown-shaped teeth as they eat meat. They help them to prey upon some animals and eat their flesh. The answer to the conundrum of what type of dinosaur has 500 teeth is Nigersaurus which is also a theropod. While others may have more or less than it.

Second Group: Sauropodomorpha

Sauropodomorpha is the second group mentioned above. They had leaf-shaped teeth, small heads, long necks and pot bellies. They were herbivorous and used to eat plants. They comprise sauropods like  Brontosaurus, Apatosaurus, Brachiosaurus and Diplodocus, their short precursors like Magyarosaurus Dacus, Shunosaurus lii, Ohmdenosaurus Liasicus and many others. 

Also, gigantic sauropods like dreadnoughts, Mamenchisaurus Sinocanadorum, Argentinosaurus and many more are also included in this.

Third Group: Ornithischia

Ornithischia comprises the herbivorous ones. Their structure from the pelvic area is very similar to the structure of birds. They have bird-like features like beaks and hips as well as other features like leaf-shaped teeth and two lower jaws. This group includes Stegoceras, Borealpelta, Nipponosaurus and many more.

Life Cycle:

The life cycle of dinosaurs started from an egg. They showed up in different sizes, shells, as well as shapes, depending upon the species to which the specific one belongs but they used to be very much similar to the eggs of birds. They mostly laid them in mud or sand and has a fast growth.

Theropods, sauropods and hadrosaurs used to grow very fast at the beginning of their lifecycle and when they reached adulthood the growth got slow as compared to some other animals. Different types of them had different characteristics. Some of them had the structure of bones inside them like the veins of blood which is the sign of a living animal.

Some of them had growth rings and according to some scientists, it shows disturbed or slowed growth which often happens due to cold. On the other hand, some scientists think that it shows the yearly growth and the age of that one can be determined by counting the rings.

Bone Size

Bone size can also be compared to determine the age of fossils. Later, scientists were also interested in measuring their weight of them. They derived two methods to get a rough estimate of the weight. In the first method, limb bones were used to find out how much weight they can carry and support above them. The other method was to measure the amount of water that got displaced when the proper model was put in it. 

Bone Height and Weight

Despite both the methods were not so accurate., but still scientist tried their level best to determine, so that they can initiate a new point for start of new researches. The smallest turned out to be Anchiornis Huxleyi weighed 0.25 kilograms, Parvicursor Remotus weighed 0.16 kilograms and Epidexipteryx Hui weighed 0.16 kilograms.

The gigantic turned out to be Maraapunisaurus Fragillimus weighed 70 tonnes Puertasaurus Reuili weighed 80 tonnes, Paralititan Stromeri weighed 80 tonnes and Argentinosaurus Huinculensis weighed 80 tonnes this is also the riposte to what dinosaur has 500 teeth.

The tallest came out to be Brachiosaurus Altithorax which was 12m in height, Giraffatitan Brancai which was also 12m in height, and Sauroposeidon Proteles which is 18m or taller. The huge meat-eaters were Tyrannosaurus rex, Mapusaurus Roseae, Giganotosaurus Carolinii and Spinosaurus Aegyptiacus.

Life Span:

Their life span was totally dependent on their size and how their metabolism works. For example, the ones having slower metabolism tend to live longer than the ones having slower metabolism. While some had a fast metabolism and they did not live longer compared to others. Possibly, sauropods lived 50-100 years, bigger ones a little less than it and the ones of small sizes had a very small life span.


  • Prehistoric crocodiles were the most dangerous creatures on Earth for around 20 million years after dinosaurs developed. Dinosaurs did not actually begin their ascent to dominance until the beginning of the Jurassic period, 200 million years ago. By Jurassic time scales, modern humans have only been around for a few hundred thousand years, and human civilization began only approximately 10,000 years ago.
  • Everyone knows about how quickly and irreversibly the dinosaurs went extinct, but they may have been the most successful vertebrate species to ever occupy Earth, based by the 165 million years they managed to survive. What dinosaur has 500 teeth, were alos a part of these.
  • Researchers believe that some dinosaurs were cold-blooded, while others were warm-blooded, and yet some were neither. Warm-blooded little meat eaters could have existed. Plant-eating people who were less active were most likely cold-blooded. Warm-blooded animals require 10 times the amount of food as cold-blooded animals of the same size.
  • The largest dinosaur eggs measured up to basketballs in size. The thicker the shell, the bigger the egg. If the eggs had been larger, the dinosaur babies would have been unable to escape.
  • The bones of most meat-eating dinosaurs were filled with air. Their bones were massive, yet not as hefty as they appeared. Birds have hollow bones that are similar to ours.
  • In the marl quarries of Haddonfield, New Jersey, the first known American dinosaur was discovered in 1858. Other fossils had previously been discovered, but they had not been appropriately classified as dinosaur fossils.