The Long Neck Dinosaurs

The long neck dinosaurs are firm favourites with children and adults alike. There is something amazing about seeing an animal so big that you are actually smaller than its head or with a neck so long you can slide down it! They were found early during both the age of the dinosaurs and when people started fossil hunting. With bones as big as these long neck dinosaurs had that is not surprising.

Long Neck Dinosaurs were called Sauropods were some of the largest of all dinosaurs. These herbivores could weigh up to 200.000 lbs. and be over 100 feet long. They lived during the late Jurassic to the late Cretaceous periods and are recognizable from their long necks and tails, huge size and small heads

Table 1 : Scientific names of Long neck Dinosaurs

What we call themScience NameLong neck dinosaur examples
Long Neck DinosaursSauropodsBrachiosaurus


We have just chosen four of the long necked dinosaurs in the table above to give you an idea, we have chosen them as they are all special even among sauropods, and below we will give a larger list of the long necked dinosaurs for you to print out as well.

We also have information about each of these largest of dinosaurs for you to learn all about them. with quick facts and even some coloring. So lets take a look at these biggest of dinosaurs.

What Were the Long Neck Dinosaurs

Dinosaurs often have really long and difficult names, and these long neck dinsaours can have names almost as long as their necks and tails! Luckily the scientific name is not to bad to say. We call these long necked dinosaurs sauropods. ( Saw – Row – Pod) and it actually means lizard foot in Latin.

However we would say that their lizard feet are not the thing to use to classify and recognise them! Sauropods were easier to identify from the following

Features of a Sauropod.

  • Long necks up to a third (or even half) of their whole body
  • Long tails again up to a third or half their body length
  • Small heads, with such a long neck it would be difficult to move a big head!
  • Big bodies
  • Legs like elephants
  • Slow moving
  • Plant eaters.
  • Air sacs in their neck bones (vertebra)
  • Large Elephant like feet

Of course as with everything there are exceptions to the rules, but most long neck dinosaurs ( sauropods) were at least some of the above. All of them were much bigger than you!

Long Neck Dinosaur Names

Some of the names of the long neck dinosaurs ( sauropods) seem as long as they were! We have the names of the ten most popular Sauropod below with the name, what their name means and how to pronounce the name of the long neck dinosaur as well.

It may come as a surprise that when naming these long neck dinosaurs, paleontologists ( the scientists who study dinosaurs) did not use their huge size to describe them as much as you might think. You would think their would be a sauropod whose name means long neck lizard, or long neck dinosaur but there isn’t.

Some do have names that describe their size, which was as much a distinguishing feature as their long necks and tails but still. Missed a trick there we think!

Table 3: We have a table of long neck dinosaur names their meanings and how to say them below.

Long Neck Dinosaur NameLong Neck Dinosaur Name MeaningLong Neck Dinosaur pronunciation
BrachiosaurusArm LizardBrak – ee – oh – saw – Rus
ApatosaurusDeceptive LizardAh – Pat – Uh – saw – Rus
DreadnoughtusFears nothingDread – Nort – us
ArgentinosaurusArgentina LizardArg – un – tea – nuh – saw – rus
DiplodocusDouble BeamDip – lod – ih – kus
BrontosaurusThunder Lizardbront – Oh – saw – rus
SuperSaurusSuper LizardSue – per – saw – rus
TitanosaurusTitanic LizardTie – tan – oh – saw – rus
PatagotitanPatagonian titanPat – ah – go – tie – tan
CamarasaurusChambered LizardCam – ah – Rah – saw – rus
EuropasaurusEurope LizardUre – Rop – Saw – rus

Long Neck Dinosaur coloring pages

long neck dinosaur coloring pages

You can download free long neck dinosaur coloring pages from this page ( click the picture above )

Examples of Long neck Dinosaurs (Sauropods)


Lets start with the (maybe) biggest long necked dinosaur although not the longest,

dreadnoughtus long neck dinosaur

Quite complete fossils have been discovered of the battleship (which is where it got its name as well) sized Dreadnoughtus about 70% of the whole dinosaur. This means it is quite well known for a sauropod. (long neck dinosaur) and because of that it has a claim for the biggest ever dinosaur. Let look at the quick facts below.

  • Fossils are dated from 74-70 million years ago.
  • Dreadnoughtus could be up to 85 feet (26 meters) long. (almost as long as a 747 passenger plane)
  • It neck and head could have been up to 36 feet (12 meters) long!
  • Estimates change on how heavy it was but it is thought over 110,000 lbs (49,000 kg)
  • Like other long neck dinosaurs it was a herbivore and would have eaten plants and trees.

Brachiosaurus The Most Famous Long Neck Dinosaur.

This long neck dinosaur has been in so many movies! It was the first dinosaur seen when they all got to Jurassic Park for example.

Brachiosaurus long neck dinosaur
  • Brachiosaurus lived about 154 -150 million years ago it what is now North America. This was during the Late Jurassic Period
  • This long neck dinosaur could weigh up to 50 tons that is over 100,000 lbs. or over 10 fully grown elephants.
  • The brachiosaurus name means “arm lizard” . it got this name because its front legs were much longer than its back legs
  • It measured about 26 meters (85 feet) from head to tail of which 9 metres could be its long neck!
  • Brachiosaurus was a herbivore which means it ate leaves, twigs and bushes.

We also have a longer (ha!) look at the Brachiosaurus dinosaur here and on the link below.

Diplodocus: The Longest Tail on a Long Neck Dinosaur!

For a very long time Diplodocus was thought to be the longest and biggest of all the long neck dinosaurs.

diplodocus long neck dinosaur

Still a huge dinosaur, but diplodocus is now considered small when compared to other long neck dinosaurs.

  • Diplodocus lived around 154 million to 152 million years ago During the late Jurassic.
  • it had the longest tail of any sauropod the tail could be 46 feet long and was the longest of any animal, EVER! it made up about half of its total length.
  • It may have been able to stand up on its hind legs using this tail as support.
  • It could grow 80 to 90 feet in length so although it had the longest tail, it wasn’t the longest dinosaur.
  • its name can be tricky to say it has four syllables and is said like this “duh·plo·duh·kuhs

Supersaurus: The Longest dinosaur in the world

This dinosaur is now thought to be the longest in the world beating Diplodocus.

supersaurus long neck dinosaur

Supersaurus was certainly a giant, but there may be an even longer, heavier Sauropod that walked on earth. you can find out about that dinosaur at the end.

  • Supersaurus could be up to 131 feet long. (40 meters) this makes it the longest ( from good fossils) dinosaur in the world!
  • It wasn’t as heavy as dinosaurs like argentinosaurus or Dreadnoughtus though, and likely weighed up to 80,000 lbs. (40,000kg)
  • It would have looked more like a diplodocus, but longer, than a heavier brachiosaur and had a long tail and neck.
  • The fossils of Supersaurus were found in 1972 in Colorado
  • its name is easier to say than other long neck dinosaurs. it has 4 syllables and is said like this “Soo – Puh – Saw – Rus”


Argentina was arguably ( and it has caused a lot of arguments!) the heaviest and possibly biggest dinosaur ever. However the fossils found are only 3.5% of its body so there is a lot of estimation to get to that size. Dreadnoughtus has had 70% of its skeleton found so far.

However, Argentinosaurus is currently established as the heaviest / biggest dinosaur that ever lived on earth… far. We have some statistics below to check out about the Argentinosaurus

  • The name Argentinosaurus is not that easy a name to say. We say it AR-gen-TEEN-uh-SAW-Rus”.
  • They lived in the Late Cretaceous Period between 93.5 and 97 million years ago.
  • Estimates put the average weight of an Argentinosaurus between 100-140,000 lbs.
  • Estimates put the average length of an Argentinosaurus between 95 and 115 feet.
  • They are, so far, the largest animal to ever walk on Earth.
  • They had a long neck and tail and were bulkier than other long neck dinosaurs.
  • They were as heavy as about 15 elephants. ( big elephants!)

Long Neck Dinosaurs – Statistics

We have put some of the sauropod statistics into the table below for easy ready. We highlight the longest, tallest, heaviest, biggest, longest tail, and neck of all the lock neck dinosaurs, but keep reading afterwards for a surprise.

Table 2: Long Neck Dinosaur Records

Sauropods StatisticsDinosaur NameHow Big
Longest DinosaurSupersaurus*upto 112 feet long
Longest NeckMamenchisaurus50 feet long
Longest tailDiplodocus46ft long tail
Heaviest DinosaurArgentinosaurus or Dreadnoughtus
( depends who you talk to!)
1: 220,000 lbs!
2: 140,000 lbs
Tallest DinosaurSauroposeidon59 feet tall!
  • see below

Amphicoelias: The Longest, Heaviest, Biggest, Tallest Dinosaur in the World?

The number of new fossils being found means that we have to change what dinosaur we think is the largest or biggest quite often. the title changes almost every few years!

Amphicoelias biggest dinosaur in the world

Amphicoelias is an unknown long neck dinosaur ( sauropod) It is only half known from a drawing and a note from a fossil dig over 100 years ago. That fossil has never shown up though.

If it was real, and not a mistake the Amphicoelias would have been over 157 feet long and weight close to 300, 000 lb! that is almost double what most other sauropods weighed and almost 2 times as long! It would make it the biggest animal ever to live on Earth.

However the fossil of Amphicoelias has never been found, and at the moment we can only imagine what it might and how big it was, until we find the next fossil that is.

The Next Biggest of all Dinosaurs?

there is one more dinosaur that might be about to take the title. A barosaurus fossil has been found and is being studied that if it turns out to be what they think it is( a back bone) then will create a dinosaur that was likely over 157 feet long (49 metres) and would be the longest dinosaur ever. You can read more about this here, but it is very science based.

Were There Other Long Neck Dinosaurs?

We know all about the long necked Sauropods now, but there were plenty of other dinosaurs on Earth 66-200 million years ago. Did any other dinosaurs have long necks? We take a look in this final section.

Some other dinosaurs did have long necks when compared to this bodies, but they were nothing compared in actual size to sauropods. If you look at the ostrich like gallimimus and the oviraptor they had quite long necks for their size.

Plesiosaurs and their long necks!

However the other giant long neck dinosaurs, were not actually dinosaurs. We have to go into the sea to find them and look at a group that are often called water dinosaurs, or swimming dinosaurs. ( we explain what they really are here) these animals were mosasaurs and plesiosaurs and the ones with really long necks were the plesiosaurs.

plesiosaur facts for kids

We take a look at the longest neck in the sea below!

Albertonectes: The longest neck in the sea!

The longest neck of a marine reptile (Plesiosaur) is on Albertonectes. This long necked plesiosaur could be up to 35 feet (12 meters) Its neck could be 23ft (7 meters) long. Although this is the longest neck in the sea there were plenty of similar marine reptiles with long necks as well. We take a look at some of them here. in the article below.

Why did the long neck Dinosaurs go Extinct?

Sauropods were some of the largest animals to ever walk the Earth, but they nonetheless went extinct around 65.5 million years ago and some even before then. Though we can only go by the age of the fossils but it is clear from that that some sauropods went extinct before the rest of the dinosaurs 66 million years ago.

There are a number of theories concerning why this happened, Some scientists believe that a comet or asteroid may have caused the extinction, while others think that climate change may have played a role probably as a result of the asteroid impact

It is also possible that the sauropods simply outlived their food sources and died of starvation. Whatever the case may be, the sauropods’ extinction marks the end of an era in Earth’s history and we can only see them now in the fossils we find.


There were many long neck dinosaurs that lived during the age of the dinosaurs and they came in all shapes and sizes. ( well mostly big!) they are some of the most incredible animals ever to live and its easy to see why they hold such fascination even 200 million years after they have gone.

If you want to know more about any long necked dinosaur, or any other dinosaur you can check out our facts pages on all the dinosaurs on this page, hopefully it helps you learn more about these amazing creatures.


Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *