An Ultimate Guide to Patagotitan: The Giant of Patagonia

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Name Meaning“Patagonian titan” Height5–6 meters (16–20 feet)
PronunciationPah-tuh-go-TIE-tanLength31 meters (102 feet)
EraMesozoic Late CretaceousWeight31 meters (102 feet)
ClassificationDinosauria, Saurischia, SauropodaLocationArgentina (South America)

Patagotitan Pictures

Patagotitan | GurgiFan57 via FanonFandom

The Patagotitan

Gage Beasley Prehistoric's Patagotitan Concept
Gage Beasley Prehistoric’s Patagotitan Concept

During the last few million years of the dinosaurs on earth, the biggest and most majestic of them evolved. 

They were the Titanosaurs, a group of sauropod dinosaurs known to have reached astronomical sizes. 

The Patagotitan is one example of these beastly giants. 

This sauropod dinosaur was one of the largest dinosaurs to have ever roamed this Earth, which also makes it one of the largest terrestrial animals ever discovered. 

Patagotitan lived during the Late Cretaceous Period, approximately 100 to 95 million years ago. 

It was a herbivore that lived in a forested area in the Patagonia region of present-day Argentina. 

Salty soil in a dry lagoon, in the south of the province of La Pampa, Patagonia, Argentina
Salty soil in a dry lagoon, in the south of the province of La Pampa, Patagonia, Argentina | Foto4440 via iStock

The dinosaur’s name references this location. 

Despite their massive size, titanosaur fossils are difficult to find. 

Patagotitan is one of the few exceptions to the rule.

It is one of the best-known members of the group known from at least six fossil specimens. 

This has made it possible to estimate the dinosaur’s size and understand other aspects of its life, including its relationship with other titanosaurs.

In this article, we’ll explain some of the most fascinating facts about this massive dinosaur. 

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Physical Characteristics

An illustration of the skull of a Titanosaur Patagotitan Mayorum
An illustration of the skull of a Titanosaur Patagotitan Mayorum – Josh Brown via Istock

Patagotitan was your typical sauropod dinosaur. 

It was a quadrupedal animal with an extremely long neck, a long muscular tail, and a notably large torso. 

The legs were pillar-like, with massive bones that provided all the support needed to carry the dinosaur’s enormous bulk. 

Although different scientists have varying estimates for the Patagotitan’s size, this colossal beast was undoubtedly one of the largest dinosaurs to have ever lived. 

Initial studies after this dinosaur was first discovered placed it at an estimated length of about 37 meters (121 feet) and a weight of 69 tons.

This made it the largest dinosaur ever found. 

Gage Beasley Prehistoric's Patagotitan Size Comparison Chart
Gage Beasley Prehistoric’s Patagotitan Size Comparison Chart

The length was later revised down to about 31 meters (102 feet), and the weight was estimated to be about 50 to 57 tons. 

Based on these new estimates, it still rivaled other massive titanosaurs like the Argentinosaurus, the current record holder for the largest dinosaur ever discovered. 

For context, this dinosaur is heavier than a Boeing 737 airplane. 

Patagotitan was four times heavier than the Diplodocus, the longest known dinosaur, and up to ten times the size of the iconic Tyrannosaurus rex. 

Habitat and Distribution

Patagotitan lived in South America during the Late Cretaceous Period. 

This was approximately 100 to 95 million years ago. 

Fossils of this massive dinosaur were discovered in the Patagonia region on the southern edge of Argentina. 

This suggests that the dinosaur’s geographic range was limited to this part of the continent. 

During the Late Cretaceous Period, the region where the Patagotitan lived was a forested area with numerous coniferous trees, ferns, and flowering plants. 

It also had vast floodplains and meandering rivers. 

At the time, South America was part of the larger supercontinent Gondwana, which included South America, Africa, Antarctica, Australia, the Indian subcontinent, and the Arabian Peninsula.

The climate in Gondwana during this period was generally warm and humid. 

The landmass of South America was situated at a relatively low latitude, so it experienced tropical to subtropical conditions. 

Behavior and Diet

Patagotitan was a quadrupedal dinosaur, which means it walked on all fours. 

It had massive legs built to carry its body weight. 

An artist's impression of a Patagotitan
An artists impression of a Patagotitan | Mariol Lanzas via Wikimedia Commons CC BY-SA 4.0

Titanosaur sauropods, like the Patagotitan, walked slowly and steadily. 

They likely moved at a leisurely pace as they foraged for food. 

Given their size, these dinosaurs did not need agility since most predators would have left them unbothered. 

The Patagotitan’s long neck would have made it easy to reach vegetation high up in trees without necessarily moving its entire body. 

Most herbivorous dinosaurs exhibited gregarious behavior.

They lived and moved around in herds or groups composed of individuals of different ages.

 Living in herds like this allowed for efficient foraging as they could cover a larger area. 

It also facilitated mating during specific seasons. 

Like other sauropods, Patagotitan was most likely an herbivore. 

This dinosaur’s diet likely included a wide variety of vegetation, including ferns, cycads, conifers, and flowering plants. 

The Late Cretaceous environment of Patagonia, where this dinosaur lived, was a lush forest teeming with plant life. 

Lush forest environment of Patagonia in the past
Lush forest environment of Patagonia in the past | Jui-Chi Chan via iStock

This would have provided an abundant supply of food for massive herbivores like the Patagotitan

To obtain food, Patagotitan would have used its long neck to reach vegetation high above the ground. 

This dinosaur had specialized peg-like teeth effective for stripping leaves from branches. 

Big herbivores like the Patagotitan tend to consume a lot of food. 

That’s partly because they eat a lot of low-nutrient plants and digest very little of what they eat. 

They need a large digestive system to get the most out of their food, which is why they evolved such a large body. 

Patagotitan would have had to consume up to 14 times as much food as an average elephant to support its massive bulk. 

This may have required them to eat continuously for up to 20 hours a day. 

Patagotitan likely relied on a browsing feeding strategy. 

They moved slowly through the landscape, using their long neck to selectively feed on vegetation that would have been inaccessible to other animals in the region. 

Life Cycle

Like other dinosaurs, Patagotitan most likely reproduced through sexual reproduction. 

Males and females would come together for mating, likely during a specific breeding season. 

Life restoration of two Patagotitan at dawn
Life restoration of two Patagotitan at dawn | PaleoEquii via Wikipedia CC BY-SA 4.0

As is the case with most herding animals, mating may have involved elaborate courtship displays. 

However, specific details about this dinosaur’s courtship and mating behaviors are not well-known due to the scarcity of direct fossil evidence.

After mating, females laid their eggs in prepared nests typically located in well-protected areas. 

The eggs were left to incubate in nests with the herd nearby, providing protection.

Although there’s no direct evidence of parental care in Patagotitan, they likely provided some form of care for their offspring. 

There’s evidence that suggests that young sauropods stayed with the herd.

Patagotitan adult form
Patagotitan adult form | Jack Wood via The Wood Parable

They were significantly smaller than their adult forms, which would have made them vulnerable to predation from larger dinosaurs in their habitat. 

As they grew, Patagotitan juveniles likely experienced a rapid growth rate within the first few months or years of their life. 

This would eventually slow down after maturity, but they most likely continued to grow throughout their life.

An indeterminate growth pattern like this would have made it possible for them to reach such an enormous adult size. 

Evolution and History

Patagotitan was a titanosaur, one of the last surviving groups of long-necked sauropods that were alive during the Late Cretaceous Period. 

Patagotitan mayorum
Patagotitan mayorum | Levi bernardo via WIkimedia Commons

The evolutionary history of this dinosaur and those of its closest relatives can be traced back to the early ancestors of sauropod dinosaurs. 

Sauropods emerged during the Late Triassic Period, around 230 million years ago. 

They were a diverse group of herbivorous dinosaurs known to reach massive sizes. 

But they weren’t always the long-necked and large dinosaurs we are now familiar with. 

These dinosaurs evolved from small bipedal ancestors with small forelimbs.  

These earlier sauropods were known as the prosauropods

Prosauropods | Vaderxl via DinopediaFandom

Throughout the Triassic and Jurassic periods, the sauropods evolved rapidly, changing their size and overall morphology. 

As they grew, their chest became proportionately larger. 

They also developed larger forelimbs and dramatically larger necks.

The changes in morphology led to the emergence of different lineages. 

Earlier forms include the turiasaurs, the mamenchisaurids, and the diplodocids that emerged during the Late Jurassic and Early Cretaceous periods. 

The Titanosauria group, where the Patagotitan belongs, was the last to evolve and was around until the dinosaurs all went extinct during the end-Cretaceous extinction event. 

Interactions With Other Species

The Patagonia region where this dinosaur lived was a warm, fertile environment rich in vegetation. 

The lush forest and floodplain created a complex ecosystem that hosted a huge diversity of life forms. 

Saltasaurus | LadyofHats  via Wikipedia Public Domain

In addition to Patagotitan, this region was home to several other dinosaurs, including other titanosaurs like the Saltasaurus and Puertasaurus

Although the Patagotitan was the biggest herbivore around, it would have had to compete with these other large dinosaurs for food and other resources. 

Other non-sauropod herbivores, such as ornithopods and ankylosaurs, were present in the region as well. 

A specialized diet and the possibility of reaching plants that were inaccessible to other dinosaurs might have given the Patagotitan comparative advantage against them. 

Carnivorous dinosaurs like Giganotosaurus and ferocious Tyrannotitan were the top predators in the South American ecosystem. 

These large theropods would have posed a threat to Patagotitan juveniles or weakened individuals. 

But fully grown, healthy adults would have had very few natural predators due to their immense size that would have intimidated any potential predators. 

Cultural Significance

Huge full-size dinosaur model of Patagotitan mayorum
Huge full-size dinosaur model of Patagotitan mayorum located near Peninsula Valdes, Patagonia | Neurobite via iStock

Patagotitan is one of the most well-known dinosaurs, mainly due to its incredible size and status as one of the largest land animals to have ever existed.

Although several other massive dinosaurs are known (including some that lived in the same region as the Patagotitan), Patagotitan fossils are quite abundant and well-preserved.

This has made it easier for scientists to estimate the dinosaur’s likely weight to a high degree of accuracy compared to these other massive dinosaurs. 

Patagotitan is far more complete in the fossil record than many of its contemporaries, which is why scientists can be more certain of its size. 

Despite this, different size estimates exist for this dinosaur because scientists use different methods to estimate body mass. 

Skeleton cast of Patagotitan
Skeleton cast of Patagotitan | Zissoudisctrucker via CC BY-SA 4.0

Consequently, there’s still some debate over exactly how heavy it was. 

Most of the estimates do agree that it is one of the top dinosaurs of the Late Cretaceous Period. 

The discovery of such a massive dinosaur is an extraordinary feat.

When its discovery was announced in 2017, the massive size and grandeur of the Patagotitan captured public attention almost instantly. 

Life-sized casts and actual bones of this dinosaur are often featured in museum exhibits. 

Patagotitan is an iconic example of the sheer scale and diversity of prehistoric life, which is why it is often featured in documentaries, books, and other media. 


Patagotitan is a genus of sauropod dinosaurs that lived in the Patagonia region of Argentina during the Late Cretaceous Period. 

It was a titanosaurian—a group of massive dinosaurs that were the last surviving lineage of the sauropod dinosaurs. 

Patagotitan was one of the largest members of the group. 

Although there might have been bigger dinosaurs, very few of them left sufficient evidence in the fossil record to accurately determine their size. 

Patagotitan was a particularly large and robust herbivore that lived in a lush tropical forest. 

It thrived on a diet of conifers, ferns, and flowering plants. 

Given its size, it occupied a top spot in South America’s Late Cretaceous ecosystem. 

Although the Patagotitan lived alongside some of the planet’s largest and most ferocious predators, its massive size meant it could walk freely without fear of these predators.

The spectacular size of this dinosaur makes it a popular subject in museum exhibitions and a significant fossil for paleontologists. 


What does the name Patagotitan mean? 

The name Patagotitan literally translates as “giant of Patagonia.”  

It is a combination of two words. 

The word Patago references Patagonia, the region where the dinosaur was first discovered. 

The second word, titan, references the Greek gods or giants. 

Who discovered the first Patagotitan fossil? 

The first fossils of Patagotitan were discovered in 2010 by a farm laborer named Aurelio Hernández. 

Hernández found the fossil, which was a large bone sticking out of the ground, while working on the La Flecha ranch in Patagonia, Argentina.


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