Centrosaurus ‭(‬pointed lizard‭)‬

Short Info

Centrosaurus ‭(‬pointed lizard‭)‬

Phonetic : Sen-tro-sore-us.

Named By : Lawrence Lambe‭ ‬-‭ ‬1904

Diet : Herbivore

Size : Estimated 6 meters long

Type of Dinosaur : Ceratopsian

Type Species : C.‭ ‬apertus‭ (‬type‭)‬,‭ ‬C.‭ ‬brinkmani

Found in : Canada,‭ ‬Alberta‭ ‬-‭ ‬Dinosaur Park Formation,‭ ‬Oldman Formation

When it Lived : Late Cretaceous, 76-74 million years ago

Centrosaurus (/,sentroU’so:r@sor SEN-tro-SAWR) is the name given to a species belonging to herbivore ceratopsian dinosaurs that lived in the Late Cretaceous of Canada. Their remains have been discovered inside the Dinosaur Park Formation, dating between 76.5 to 75.5 million years ago.

Centrosaurus apertus skull and jaws, Dinosaur Provincial Park, Alberta, Canada, Late Cretaceous - Royal Ontario Museum - DSC00078
Daderot, CC0, via Wikimedia Commons

Initial Centrosaurus remains were found in the Paleontologist Lawrence Lambe in strata along the Red Deer River in Alberta, Canada. The name Centrosaurus is a reference to “pointed lizard” (from Greek”kentron, “point or prickle” and sauros sauros “lizard”), and is a reference to the series of tiny hornlets that are placed in the margins of their frills, and not for those horns on the nose (which were not present when the dinosaur was first named). The genus should not confuse with Stegosaur Kentrosaurus which is the name that is derived of the exact Greek word.

Annual report of the American Museum of Natural History for the year (1916) (17810089074)Internet Archive Book Images, No restrictions, via Wikimedia Commons

Later, massive bonebeds of Centrosaurus were discovered within Dinosaur Provincial Park, also located in Alberta. These beds can stretch to hundreds of meters and include thousands of people of all ages and levels of completeness. Researchers have suggested that the huge amount of people and density could be explained if they died in the course of crossing the river that was flooded. The finding of thousands of Centrosaurus fossils in the vicinity of the city of Hilda, Alberta, is thought to be the biggest bone bed ever found. This area is now known for its Hilda mega-bonebed.

Due to the differences between species, and even between individual specimens of centrosaurines there is a lot of debate about what species and genera are valid, and more specifically, the question of whether Centrosaurus or Monoclonius are legitimate genera that are not able to be diagnosed or perhaps belonging to the opposite gender. The year 1996 was the first time Peter Dodson found enough variations among Centrosaurus, Styracosaurus, and Monoclonius to warrant distinct genera. He also found that Styracosaurus closely resembled Centrosaurus more than either did Monoclonius.

Dodson believed that one Monoclonius species, M. nasicornus, might actually have been an female Styracosaurus. His conclusions were partially backed up by other researchers, who are not agreeing with Monoclonius Nasicornus as being a female Styracosaurus or Monoclonius as an authentic Genus. Although sexual dimorphism has been thought to be a possibility for a base ceratopsian Protoceratops is no proof of sexual dimorphism within any ceratopsid. Some have also compared C. Nasicornus and C. Apertus or considered it to be a separate Centrosaurus type: Centrosaurus nasicornus. It is also thought of as the direct parent to Styracosaurus albertensis. A 2014 study on changes that occur during growth in Centrosaurus found that C. Nasicornus was an intermediate synonym for C. Apertus, which is an intermediate growth stage.

Its C. brinkmani species C. brinkmani, which was first described in 2005 was added to the Coronosaurus genus in 2012. Coronosaurus in 2012.

The huge body of Centrosaurus were carried by hefty legs, though at as high as 5.5 metres (18 feet) they were not huge dinosaurs. Similar to other centrosaurines Centrosaurus had horns that were large and single on their noses. The horns were bent forwards or backwards based on the particular specimen. The skull’s ornamentation diminished as animals grew older. The frill was comparatively small in comparison to the overall length of the skull, and it could reach over half one meters (68.8 centimeters) long in the most senior and tallest adult.

Centrosaurus stands out by two large hornlets that hook upwards over the frill. A small pair of upward-facing horns are also visible in the eye area. These frills on Centrosaurus were fairly long with fenestrae that were quite large and tiny hornlets around the edges of the.

Source: Wikipedia