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Sauropelta

Say it: SOR-oh-PEL-tah
Name means: “lizard shield”1
Ate: PlantsArmoured dinosEarly Cretaceous to Late Cretaceous

Sauropelta was an armoured dinosaur that looked like a walking tank. It had huge spikes on its neck and a long tail that made up half its body length. This plant-eater lived in North America during the Early Cretaceous period.21

Lived
121 to 94 million years ago3
Early Cretaceous to Late Cretaceous
Fossils found in
Wyoming, Montana, and possibly Utah, USA23
Length
5.2 to 6 m (17 to 20 ft)2
Weight
1.5 tonnes to 2 tonnes (3,300 to 4,400 lb)2
Height
1.7 m (5.6 ft)
estimate
Top speed
about 16 km/h (10 mph)
Running, estimate
What did Sauropelta eat?
Sauropelta was a herbivore that ate plants. It had leaf-shaped teeth for cutting plant material and a beak, and it browsed on conifers and cycads in forested floodplains.

When did it live?

Triassic
Jurassic
Cretaceous
252 million years ago20114566, the asteroid

How big was it?

How long was it?

Sauropelta about 6 m long (20 ft)A bicycle about 1.8 m (5.9 ft)A car about 4.5 m (15 ft)An elephant, the biggest land animal today about 6.5 m (21 ft)

How tall was it?

A dogabout 0.5 m (1.6 ft)A horseabout 1.6 m (5.2 ft)Sauropeltaabout 1.7 m tall (5.6 ft)An elephantabout 3.2 m (10 ft)

estimate

How heavy was it?

as heavy as 1.5 cars
as long as 6 dogs nose to tailas long as 33 bananas end to endas heavy as 100 dogsas heavy as 400 watermelonsas heavy as 2.5 whole school classes of kidsas heavy as 4 polar bearscould run 100 metres in 22 seconds (the fastest human needs 9.6)

How big was Sauropelta compared to YOU?

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How fast was it?

cool stuff

Fun facts

1

Sauropelta had two rows of large, pointed spines on each side of its neck. The spines pointed backwards and upwards, and their bases were fused together, which limited neck movement.2

2

Its body was covered in bony armor, including small nodules and larger conical scutes. Over the hips, the armor plates locked together tightly to form a 'sacral shield'.2

3

Sauropelta is one of the earliest known nodosaurids. Most of its fossils come from rocks that are about 108.5 million years old.2

4

The first Sauropelta fossils were collected by famous dinosaur hunter Barnum Brown in the 1930s. But the dinosaur was not named until 1970, when John Ostrom gave it the name Sauropelta.2

5

Sauropelta lived in forested floodplains near rivers. It ate conifers and cycads, since grasses had not yet evolved.2

6

A nearly complete skeleton with its armor still in place is on display at the American Museum of Natural History in New York City.2

AI-madeAI-made picture of Sauropelta
An AI-made picture of how Sauropelta might have looked, made by a computer from what scientists know. It is a guess: the real animal may have looked different, and nobody knows its true colours.
you asked

Most asked questions about Sauropelta

?How big was Sauropelta?

Sauropelta was about 5.2 to 6 metres (17 to 20 feet) long and weighed about 1.5 to 2 metric tons (1.7 to 2.2 short tons), about the same mass as a modern black rhinoceros.2

?Did Sauropelta have a tail club?

No, Sauropelta did not have a tail club. Nodosaurids like Sauropelta lacked the heavy tail clubs that ankylosaurids had.2

?What did Sauropelta eat?

Sauropelta was a herbivore that ate plants. It had leaf-shaped teeth for cutting plant material and a beak, and it browsed on conifers and cycads in forested floodplains.2

?When did Sauropelta live?

Sauropelta lived during the Early Cretaceous Period, about 108.5 million years ago. Most of its fossils come from rocks that are that age.2

?Where was Sauropelta found?

Sauropelta fossils have been found in the U.S. states of Wyoming, Montana, and possibly Utah. They come from the Cloverly Formation.2

?Is Sauropelta a dinosaur?

Yes, Sauropelta is a dinosaur. It is a type of armoured dinosaur called a nodosaurid, which belongs to the group Ankylosauria.21

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Myth buster

Myth: Sauropelta had a tail club like some other armoured dinosaurs.

Truth: Sauropelta was a nodosaurid, and nodosaurids did not have tail clubs. Instead, its tail had flat triangular plates pointing outwards.2

For dino experts

Scientific name
Sauropelta
Named by
Ostrom 19703
Group
Armoured dinos
Family / clade
Nodosauridae3
Classification
Ornithischia > Ankylosauria > Nodosauridae > Thyreophora3
Age of the rocks
121 to 94 million years (Aptian / Cenomanian)3
Rock formations
Cloverly, Cedar Mountain, Wayan3
Countries
USA3
Fossil records
34 in the Paleobiology Database3
Discovery
Barnum Brown collected the first fossils in the 1930s from Montana, USA. John Ostrom named the dinosaur Sauropelta in 1970, using specimens from both Brown's and his own expeditions.2
Still debated
Scientists are not sure if some large nodosaurid fossils from Utah belong to Sauropelta or to a different, unnamed species.2

Where the facts come from

  1. Sauropelta | Natural History Museum (nhm.ac.uk)
  2. Sauropelta (en.wikipedia.org)
  3. Sauropelta in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.

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More from the same group: Armoured dinos

Also from the same time: Early Cretaceous

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