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Science has taught us a lot about dinosaurs, from how they evolved to what they might have looked like. We even have pretty clear ideas about how big they were! However, if you’re not face-to-face with them, it can be hard to wrap your head around how big they were — and that’s where a dinosaur comparison guide helps.
Ever wondered if a dinosaur was bigger than you? How about if it was bigger than one? House?
We answer these questions – and more! — in our complete dinosaur comparison guide.
How big are dinosaurs?
Every year our understanding of dinosaurs and their size changes. Scientists were able to discover a dinosaur the size of a last year in 2020 hummingbird – a new species that now holds the title for smallest dinosaur ever.
From some of the smallest animals to some of the largest, dinosaurs are a diverse group. So, how do these four prehistoric ones work? reptiles compare – and you?
Size Argentinosaurus
The Argentinosaurus has impressed the world with its size since its discovery in 1987. In fact, the very first fossil discovered of the Argentinosaurus was a single vertebra the size of an adult human! Scientists have not yet found a complete skeleton of an Argentinosaurus, but they have still been able to use fossils found to estimate their size.
Have you ever noticed how long a bowling alley is? Scientists estimate the Argentinosaurus was over twice as long as your standard bowling lane, making them over 130 feet long.
Their hind legs alone are estimated to be 15 feet long! This means that if the average person stood next to the Argentinosaurus, they would barely be level with the Argentinosaurus’ knee.
How does this compare to a house? Well, in the United States, the average two stories house is only about 20 feet tall. This means that the legs of the Argentinousaurus alone were almost bigger than a two-story house.
Argentinousauruses can also weigh up to 200,000 pounds. That’s more than two double-wide mobile homes and just £5,000 less than the Statue of Liberty.
From these measurements it is easy to see why the Argentinosaurus is one of the biggest dinosaurs – as well as one of the largest land animals! Until recent years it actually held the title for both, although several new discoveries scientists have wondered which dinosaur was the absolute largest.
Spinosaurus size
Can you imagine standing next to an animal half the height of the Hollywood sign? The Spinosaurus is just as tall – about 23 feet.
But no matter how big they are, they are twice as long! With a length from snout to tail of about 50 feet, the Spinosaurus is as long as the average semi-truck. That’s also about the same length as one of the letters on the Hollywood sign.
Despite these impressive dimensions, the Spinosaurus would look like a toy compared to the Argentinosaurus. In height, the Spinosaurus would be only a few feet taller than its hind legs. The Argrntinosuaurs would also be as long as about two and a half Spinosaurus!
The Spinosaurus’ claim to fame is its large spines protruding from its back. These spikes alone grew to a minimum of 5’4”, the average height of an adult female in the United States.
Tyrannosaurus Rex Size
Chances are, when you think of large dinosaurs, the T-rex is probably the first thing that comes to mind. After all, it has been the face of several franchises and it is arguably one of the most recognized dinosaurs out there.
While the Tyrannosaurus Rex may not be the largest dinosaur, there is no doubt that it is a giant reptile. In fact, an adult male Tyrannosaurus Rex is estimated to be as long as 12 feet. That’s the same height as an African elephant!
That’s not their most impressive measurement, though.
Based on fossils, scientists have estimated that the Tyrannosaurus Rex could be as long as 10 meters from their nose to their tail. This is about 3 meters shorter than the total length of the Spinosaurus, but it is still as long as a London bus!
As a carnivore, the Tyrannosaurus Rex also maintained a heavyweight of muscle and a high-protein diet. Adult males had the potential to weigh as much as 15,500, which is also the same as a large African elephant. However, compared to the Argentinosaurus, the Tyrannosaurus Rex barely starts to tilt the shell. In fact, more than 13 would have been stacked on top of each other to weigh the same as a single Argentinosaurus. However, it would only take about 3 to weigh the same as the Spinosaurus.
Triceratops size
Like the T-Rex, the Triceratops is another well-known dinosaur. While they can look big and intimidating with their big horns and scaly fan at the top of their heads, do you know how big they really are?
Surprisingly, they are actually the smallest dinosaur mentioned in this list!
Fossils show that the Triceratops’ body length was only 30 feet long — nearly half the length of Spinosaurus and less than a quarter the length of Argentinousaurus. In fact, the Triceratops would fit almost perfectly in the space between the fore and hind legs of the A
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entinousaurus.
However, when it comes to weight, the Triceratops and the Tyrannosaurus Rex are well liked. The Triceratops weighed up to about 11,000 pounds, making them about one Ford Taurus lighter than the Tyrannosaurus Rex. However, this is with maximum average weights, and it is quite possible that many individuals of each species weighed the same.
They are also similar in other measurements. For example, where the horns of the Triceratops could grow as long as 3 feet, the foot of the Tyrannosaurus Rex could also grow from heel to toe.
Human vs Dinosaur Size Comparison:
So, how can a human compete with some of the world’s largest prehistoric giants?
The smallest dinosaur in this guide is the Triceratops. However, it is still much larger than a human. You may be able to see it face-to-face because of the shape of its skull and body, but if you lay down next to it, you’d be only about a fifth of its height. One Triceratops also weighs the same as 55 average adult human males or 65 adult human females.
However, when it comes to the Argentinosaurus, we are no more than the average squirrel or mouse in its world. If the average human stood side by side, he would barely reach the knee of the Argentinosaurus. However, if we were to look at scales, almost the entire population of Blue Ridge, Georgia, should weigh as much as a single full-grown Argentinosaurus. That’s about 1.00 people!
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