The Top 10 Long-Neck Dinosaurs: Which One Has the Longest Neck?

There were many different types of long-neck dinosaurs that roamed the earth during the Jurassic and Cretaceous periods. Each one had its own unique features, and some have incredibly long necks.

There were many different types of long-neck dinosaurs that roamed the earth during the Jurassic and Cretaceous periods. Each one had its own unique features, but the ones listed below all shared one common trait: their incredibly long necks! Some people might wonder which one of these dinosaurs had the longest neck. Well, wonder no more! In this blog post, we will take a look at the 10 most famous long-neck dinosaurs and see who comes out on top.

Most of the dinosaurs listed below are Sauropods. Sauropods were some of the largest land animals to ever exist and they are best known for their long necks. If we are measuring the length of time a species exists on this planet, then the long neck is one of the most successful dinosaurs as they lived in all three periods of the Mesozoic Era.

Top 10 Long Neck Dinosaurs:

1) Giraffatitan

Giraffatitan was a member of the sauropod family, which is well-known for its long necks. This particular dinosaur lived during the late Jurassic period and could grow up to 26 meters (85 feet) in length! Its neck made up about one-third of its entire body, so you can imagine just how long it must have been.

While Giraffatitan might have had the longest neck of any land animal, it wasn’t the only one with a lengthy appendage. Let’s take a look at some other impressive long-necked dinosaurs!

2) Brachiosaurus

Brachiosaurus was another sauropod that lived during the Jurassic period. It was slightly smaller than Giraffatitan, measuring in at about 22 meters (72 feet) long. However, its neck was even longer in proportion to its body, making up almost half of its total length!

This dinosaur’s neck was so long that it could reach up to the leaves of tall trees, allowing it to eat plants that other dinosaurs couldn’t reach.

Related: Dinosaur-related activities to do with kids

3) Diplodocus

Diplodocus Names for kids
A Diplodocus

Diplodocus was another popular sauropod that lived during the Jurassic period. It was similar in size to Brachiosaurus, measuring about 21-23 meters (70-75 feet) long. However, its neck was slightly shorter in proportion to its body, making up around 40% of its total length.

Despite its shorter neck, Diplodocus was still able to reach high leaves thanks to its long tail. This tail acted as a counterbalance, allowing the dinosaur to raise its head without tipping over.

4) Dreadnoughtus

Dreadnoughtus was a massive titanosaur that lived during the Cretaceous period. It could grow up to 30 meters (98 feet) long and weigh over 65 metric tons!

This dinosaur’s name comes from the battleship HMS Dreadnought, which was the largest and most powerful ship in the world when it was launched in 1906.

Like Giraffatitan, Dreadnoughtus had the longest neck of any land animal.

5) Supersaurus

Supersaurus was another massive sauropod that lived during the Jurassic period. It could grow up to 30 meters (98 feet) long and weighed over 50 metric tons!

This dinosaur’s name comes from the fact that it was one of the largest land animals ever discovered. It was so big that it was actually nicknamed “The Supersaurus”!

While Supersaurus might have been big, it wasn’t the biggest dinosaur out there. Let’s take a look at some even bigger long-necked dinosaurs!

6) Mamenchisaurus

Mamenchisaurus was a massive sauropod that lived during the Jurassic period. It could grow up to 34 meters (112 feet) long and weigh over 70 metric tons!

This dinosaur’s name comes from the fact that it had the longest neck of any dinosaur. Its neck could measure up to 12 meters (40 feet) long!

Mamenchisaurus was so big that it was actually nicknamed “The Long-Necked Dinosaur”.

7) Argentinosaurus

Argentinosaurus Dinosaur with Long Neck
A long neck Argentinosaurus

Argentinosaurus was the largest land animal that has ever been discovered. It lived during the Cretaceous period and could grow up to 40 meters (131 feet) long and weigh over 100 metric tons!

This dinosaur’s name comes from the fact that it was found in Argentina. It is the national dinosaur of Argentina and is one of the most popular dinosaurs in the world!

Argentinosaurus was so big that it was actually nicknamed “The King of the Dinosaurs”.

Related post: What To Teach Kids About Dinosaurs (+ 16 Fun Ideas!)

8) Alamosaurus

Alamosaurus was a massive sauropod that lived during the Cretaceous period. It could grow up to 30 meters (98 feet) long and weigh over 50 metric tons!

This dinosaur’s name comes from the fact that it was found in Mexico. It is the national dinosaur of Mexico and is one of the most popular dinosaurs in the world!

Alamosaurus was so big that it was actually nicknamed “The King of the Dinosaurs”.

9) Titanosaurids

Titanosaurids were a group of massive sauropods that lived during the Cretaceous period. They could grow up to 40 meters (131 feet) long and weigh over 100 metric tons!

This group of dinosaurs includes some of the largest land animals that have ever been discovered. Because of their giant size, they were also known as “Titanic lizards.” 

10) Haplocanthosaurus

Haplocanthosaurus was a massive sauropod that lived during the Jurassic period. They were actually relatively small compared to their fellow dinosaurs. The total length for them was 12 meters, and they got a total weight of about 14 tons. 

Long neck dinosaurs - dinosaur heroes
Long neck dinosaurs

Which dinosaur has the longest Neck

So, which one of these long-necked dinosaurs has the longest neck? The answer might surprise you!

The longest-necked dinosaur is actually…

drumroll, please…

It’s a Tie between Diplodocus and Brachiosaurus!

It is thought that the longest neck dinosaur is probably Diplodocus or Brachiosaurus, but the true longest neck dinosaur is a highly debated topic. This is because many of the specimens to back up the actual size of these dinosaurs are rare and often incomplete.

Conclusion

So there you have it, the top ten long-neck dinosaurs! As you can see, these dinosaurs were massive creatures with necks that could reach up to 12 meters (40 feet) long! So, which one do you think has the longest neck? Let us know in the comments below!

Related: Dinosaur-related activities to do with kids

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