Centrosaurus was a fascinating dinosaur from the Late Cretaceous period that roamed the lands of what is now known as Alberta, Canada. This herbivorous creature, belonging to the Ceratopsia group, is a testament to the diverse and complex life forms that once dominated our planet.
Key Facts
| Keyword | Fact |
|---|---|
| Centrosaurus pronunciation | cen-troh-saw-ruhs |
| Meaning of name | Pointed lizard |
| Group | Ceratopsia |
| Type Species | Centrosaurus apertus |
| Diet | Herbivore |
| When it Lived | 83.5 to 72.1 MYA |
| Period | Late Cretaceous |
| Epoch | Late/Upper Campanian to Campanian |
| Length | 16.0 to 23.0 ft |
| Height | 6.0 ft |
| Weight | 2.0 to 2.0 tons |
| Mobility | Moved on four legs |
| First Discovery | 1901 by Lawrence Lambe |
| Location of first find | Alberta, Canada |
| Described by | 1904 by Lawrence Lambe in 1904 |
| Holotype | AMNH 3999 |
Centrosaurus Taxonomy and Timeline
The name Centrosaurus, meaning “pointed lizard,” is derived from the Greek words ‘kentron,’ which means “point or prickle,” and ‘sauros,’ meaning “lizard.” This name is a nod to the series of small hornlets that adorned the margin of their frills—a distinguishing feature of this dinosaur.
Centrosaurus belongs to the Ceratopsia group, which is a family of herbivorous dinosaurs known for their distinctive horns and frills. Within this group, it falls under the Ceratopsidae family. The type species of this genus is Centrosaurus apertus. The timeline of our dinosaur is set in the Late Cretaceous period, specifically the Late Campanian to Campanian epoch.
Listen to Pronunciation
Discovery & Fossil Evidence
The first fossil remains of Centrosaurus were discovered by Canadian paleontologist Lawrence Lambe along the Red Deer River in Alberta. This marked the beginning of our understanding of this unique dinosaur. These beds extend for hundreds of meters and contain thousands of individuals of all ages and all levels of completion. The high density and number of individuals suggest that these dinosaurs may have perished while trying to cross a flooded river.
In addition to these finds, thousands of Centrosaurus fossils were discovered near the town of Hilda, Alberta, in what is believed to be the largest bed of dinosaur bones ever discovered. This area is now known as the Hilda mega-bonebed. These discoveries have provided invaluable insights into the life and times of this dinosaur.
Centrosaurus Size and Description
Centrosaurus was a four-legged dinosaur with a body shape typical of ceratopsians. It had a large, bony frill that was adorned with a series of small hornlets along its edge. Furthermore, its head was large with a single prominent horn over its nose and a beak-like mouth that was well-suited for its herbivorous diet. The nasal horn curved forwards or backwards depending on the specimen.The dinosaur’s neck was short and muscular to support the weight of its massive head. Its vertebrae, like those of other ceratopsians, were sturdy and robust. The limbs were stout and strong and designed to support its heavy body. Its tail was relatively short in order to provide balance as it moved on all fours.
Size and Weight of Type Species
Despite its robust build, this was not among the largest of dinosaurs. Its body was supported by sturdy limbs and reached lengths of 16 to 23 feet and weighed between 2 to 2.8 tons. As the animal aged, the skull ornamentation reduced.
The Dinosaur in Detail
Centrosaurus‘ most distinctive feature was undoubtedly its large frill that was adorned with a series of small hornlets. This frill wasn’t just for show—it likely played a crucial role in the dinosaur’s survival and possibly served as a form of protection against predators or as a display to attract mates.
Another fascinating aspect of this dinosaur’s traits is its single large horn, which curved forwards or backwards depending on the specimen. This horn and its beak-like mouth would have made Centrosaurus a distinct presence in its environment. It’s also worth noting that as the dinosaur aged, the skull ornamentation reduced, which suggests that these features played a role in the animal’s maturity and possibly its social status.
The vast bonebeds found in Alberta, Canada provide further insights into this dinosaur’s life. The high density and number of individuals suggest that they may have lived in large herds, indeed a behavior that could have offered protection against predators. These bonebeds are a testament to the dinosaur’s adaptability and survival instincts, painting a vivid picture of life in the Late Cretaceous period.
Centrosaurus in its Natural Habitat
It lived during the Late Cretaceous period during a time when the Earth was a very different place than it is today. The climate was warmer, and the geography was vastly different, with much of what is now North America underwater. Laramidia—the region where Centrosaurus lived—is now Alberta, Canada and was likely a lush, forested environment that was rich in vegetation.
As an herbivore, it would have fed on the abundant plant life in its environment. Its beak-like mouth was well-suited for grazing on the diverse vegetation that thrived in its habitat. It’s likely that Centrosaurus was a selective feeder that chose the most nutritious plants to sustain its large body. It moved on all four legs, a trait that would have given it stability and strength.
Its social behavior is a topic of ongoing research but the discovery of vast bonebeds suggests that these dinosaurs may have lived in large herds. This herd behavior could have offered protection against predators and also facilitated access to food sources. The presence of Centrosaurus in such large numbers would have undoubtedly shaped the landscape and ecosystem around it, leaving a lasting impact on its environment.
Interesting Points about Centrosaurus
- This dinosaur had one of the largest known bonebeds, suggesting it may have moved in large herds.
- It’s large frill and single horn are the most distinctive features that set it apart from other ceratopsians.
- As it aged, the skull ornamentation reduced. This indicates these features may have played a role in the dinosaur’s maturity and social status.
- The high number of individuals in the bonebeds suggest these dinosaurs may have perished trying to cross a flooded river.
- It had a horn that curved either backwards or forwards depending on the individual.
Contemporary Dinosaurs
Centrosaurus lived alongside a number of contemporary Laramidian dinosaurs. Among them were Styracosaurus, Chasmosaurus, Daspletosaurus, and Parasaurolophus. Each of these dinosaurs was unique in their own right and contributed to the intricate dynamics of their shared environment.
Styracosaurus, with its impressive array of horns, and Chasmosaurus, known for its large frill, were both ceratopsians like Centrosaurus. They likely moved in herds across the landscape, grazing on the lush vegetation. Their coexistence with Centrosaurus might have involved competition for the same plant resources in a contest of who could reach the most succulent leaves. Despite their potential rivalry, these herbivores also shared a common threat—Daspletosaurus. This formidable predator, with its powerful jaws, was a constant reminder of the perilous balance of life in this prehistoric world.
Parasaurolophus, another herbivorous dinosaur, stands out with its distinctive crest. Its larger size might have allowed it to reach vegetation inaccessible to others. This could have reduced direct competition between them, allowing a peaceful coexistence. The presence of these diverse dinosaurs paints a vivid picture of a vibrant ecosystem with the Centrosaurus at its heart.
List of All Dinosaurs
We have created a list of all dinosaurs we have covered here, sorted across the seven main groups of dinosaurs. We also include information about their type of diet, (omnivore, herbivore or carnivore) and the time they lived.
Frequently Asked Questions
The name means “pointed lizard,” derived from the Greek words ‘kentron,’ meaning “point or prickle,” and ‘sauros,’ meaning “lizard.”
This dinosaur lived during the Late Cretaceous period. Specifically the Late Campanian to Campanian epoch, around 83.5 to 72.1 million years ago.
As an herbivore, it fed on the abundant plant life in its environment.
Known for its large frill, adorned with a series of small hornlets and a single large horn over its nose. These features, along with its robust body and four-legged locomotion, make Centrosaurus a unique dinosaur.
Sources
Article last fact-checked: Joey Arboleda, 06-11-2023
Featured Image Credit: Nobu Tamura, CC BY 3.0 https://creativecommons.org/licenses/by/3.0, via Wikimedia Commons
