The Biggest Dinosaurs Of All Time

"Dinosaurs were the biggest living species walking the face of the Earth. Read on to learn about these creatures and how they measured up."

Dinosaurs are a popular subject for various reasons. They are fascinating creatures, and everyone wants to know more. Their size is impressive, and their interpreted strength is beyond belief. While all dinosaurs weren’t enormous, some of them were extraordinarily large

Scientists even claim that some of them were the largest species to walk the face of the Earth. Let’s have a look at some of these giants.

Biggest Dinosaurs


Dreadnoughtus was one of the biggest dinosaurs of all time, and it was built like a tank. Its name means “fear nothing” in Latin, and it is so named because this dinosaur had no predators. This dinosaur was so large that any other dinosaur could not eat it. It weighed over 59 tons, which is heavier than most modern-day elephants! Dreadnoughtus’ neck alone was longer than a school bus at 37 feet. It also had a 29-feet-long tail that was about as heavy as probably a giraffe.

The Dreadnoughtus dinosaur belonged to the late Cretaceous period, which lasted from approximately 100 million years ago until 65 million years ago. The late Cretaceous period was characterized by high temperatures, worldwide flooding caused by rising sea levels, and decreased oxygen in the atmosphere. It also saw increased volcanic activity on Earth and increased impacts from meteorites and asteroids (which likely contributed to the extinction of many dinosaurs).

The Dreadnoughtus diet is a controversial topic that has been debated since the dinosaur was discovered. What did this massive herbivore eat? It’s not an easy question to answer. There are many different theories about what the Dreadnoughtus ate, but none have been confirmed. The best guess is that it ate various plants, including ferns, conifers, and cycads, as well as leaves and flowers from flowering plants. The Dreadnoughtus fossils were first discovered in 2005 by fossil hunters near Rio Negro in Patagonia (an area now known as La Plata).

Biggest Dinosaurs

Patagotitan Mayorum, The Titanosaur

Patagotitan Mayorum, the Titanosaur, was one of the biggest dinosaurs. Paleontologists discovered it in Argentina in 2017. The Titanosaur weighed over 65 tons and stood at 37 meters tall! It was about 10 meters longer than the average blue whale, the largest mammal on Earth today.

The Patagotitan Mayorum, the Titanosaur, belonged to the late Cretaceous era. The late Cretaceous was when dinosaurs were abundant, and they dominated the land. The Patagotitan Mayorum is related to other giant sauropods such as Argentinosaurus and Puertasaurus. 

During the Late Cretaceous period, it would have had access to abundant food due to dense forests with plenty of vegetation available for grazing on land or water plants in lakes and ponds. The Titanosaur’s diet consisted of plants, fruit, and leaves. They were herbivores, but they also had teeth designed.

Biggest Dinosaurs


Argentinosaurus is one of the biggest dinosaurs that ever lived. It was one of the titans at 35 meters long and with a body mass of up to 80 tons. Argentinosaurus lived in what is now South America during the Cretaceous period, and it lived alongside other titanosaurs, including Paralititan and Puertasaurus. Argentinosaurus was first discovered in 1987 on a farm.

The Argentinosaurus had a large head with two short forelimbs and two long hindlimbs with five toes each. The dinosaur’s head was small compared to its body size, but it had a large nasal cavity that may have been used for cooling during hot weather. The dinosaur also possessed an enlarged opening in its skull called a fenestra (which may have helped keep the brain cool).

Despite its impressive size and weight, scientists still have no idea what this dinosaur ate. The reason for this uncertainty is that Argentinosaurus had a gigantic skull with tiny teeth. These teeth were too small to chew up any plant matter and would not have been able to crush bone either. Therefore, researchers believe that Argentinosaurus fed on softer foods such as leaves or possibly even insects or worms.

However, there is some debate over whether or not this hypothesis is accurate. Some scientists believe that these dinosaurs were herbivores due to their large size and lack of sharp teeth, but others believe they were omnivores because they lacked other obvious carnivore traits such as claws on their hands or feet. They also point out that many modern-day birds have beaks but still eat meat occasionally, so it’s possible that Argentinosaurus did too!

Biggest Dinosaurs


Saltasaurus was one of the biggest dinosaurs of all time. It lived in South America during the Late Cretaceous period, about 100 million years ago. It was a herbivore, meaning that it ate plants. It grew to be about 42 feet long and weighed about 6.5 tons. It had a long tail and a large brain, which helped it eat and survive in its environment.

The Saltasaurus was one of the largest dinosaurs ever observed, measuring up to 27 feet long. It may have lived in herds and migrated across South America, following seasonal rainfall patterns as they moved from one area to another.

The Saltasaurus’ skull had large nares (nostrils) at its tip; they were used for breathing while feeding on low-growing vegetation or drinking water. Its teeth were small compared with other sauropods. This suggests that it ate soft plants rather than tough leaves or woody stems.

Biggest Dinosaurs


The Rapetosaurus was one of the biggest dinosaurs of all time. They weighed more than 10 tons and could reach a length of up to 50 feet. These giant plant-eaters were named after one of the largest sauropod dinosaurs ever discovered. The Rapetosaurus was a member of the Late Cretaceous period. It was a member of the sauropod subfamily Diplodocinae.

The Rapetosaurus diet consisted of plant matter, such as leaves and tree branches. They had long necks, which allowed them to reach the leaves on high branches. The Rapetosaurus also had teeth that were specialized for grinding and chewing tough plants. The Rapetosaurus lived in what is now Africa and had a very large head with a small brain. The Rapetosaurus had strong front legs and tiny back legs, so it could not run fast or far.

Biggest Dinosaurs
Fossil.Fandom – Meghunter99

Austroposeidon Magnificus

Austroposeidon Magnificus was one of the biggest dinosaurs of all time. It lived during the Late Cretaceous period and measured about 82 feet in length, making it one of the largest sauropods to have lived on land. It weighed about 7 tons and had a long neck, large head, and tiny arms.

The name “Austroposeidon” means “southern bison” in Greek, while “magnificus” means “magnificent.” This name was given because the creature’s huge size and horns led paleontologists to think it may have been related to cattle or buffalo.

These dinosaurs were herbivores and lived in herds. They may have had a social hierarchy like elephants today do: Adult males would push away younger males from food sources; adult females took care of their young, and juveniles learned from both parents how to find food themselves once they were old enough.

It is believed that Austroposeidon Magnificus was a herbivore, and it is thought that it ate plants and fruits. The exact diet of this dinosaur has been difficult to determine because there are not many fossilized remains of it. However, by examining the teeth of the dinosaur, paleontologists have been able to determine its diet. The teeth are sharp and pointed and resemble those of herbivores such as rhinoceroses and horses.

Biggest Dinosaurs
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Paralititan was one of the biggest dinosaurs of all time. It lived during the Early Cretaceous Period, about 100 million years ago, and weighed in at an estimated 59 tons. It had a long neck and tail, making it look like a modern-day giraffe. Paralititan was a sauropodomorph. This means that it had long legs and a small head. It’s different from other sauropods, known for having more stocky builds with shorter necks and tails.

The Titanosaur’s name is Greek for “titanic lizard,” which is appropriate because this dinosaur was so big that scientists didn’t believe it could exist until they found it in Egypt in 2000. This enormous dinosaur was found in the Sahara desert near Cairo, Egypt.

The Paralititan had a vegetarian diet consisting of mostly vegetables and fruits. The diet also required the consumption of grains, but it did not require the consumption of meat or dairy products at all. The Paralititan diet is considered an early form of veganism because it didn’t consume any animal-based products.

Biggest Dinosaurs

Shingopana Songwensis

Shingopana Songwensis was one of the biggest dinosaurs of all time. This species of Titanosaur was a herbivore that lived in the Early Cretaceous period, approximately 145 million years ago. It is estimated to have been about 26 feet long and 98 feet tall when fully grown, weighing about 5.5 tons. 

It would have been able to move at about four mph, making it one of the fastest-moving dinosaurs known from its period, but still much slower than similar-sized sauropodomorphs such as Plateosaurus and Mamenchisaurus, which could move at speeds up to 12 miles per hour.

The Shingopana Songwensis’ diet was primarily composed of plants. The teeth of this sauropod dinosaur were well-suited for chewing through tough leaves and branches, and it had an extremely long neck that allowed it to reach food that was high in the canopy. It may have also eaten insects, as evidenced by the presence of fossilized fecal matter with insect remains inside of it.

Biggest Dinosaurs
Pinterest – CRCiencia; Image credit: Mark Witton, www.markwitton.com 


In this article, we have shared some interesting facts about the biggest dinosaurs, among some amazing trivia. These dinosaurs were massive compared to their contemporary species and therefore had a lot of fierce features to be afraid of. Many scientists believe that these dinosaurs had sensitive hearing and a keen sense of smell. We still need to learn many things about the biggest dinosaurs of all time. Watch this space for more.

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Priyanka Monteiro


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