Coronosaurus

Coronosaurus is a genus of centrosaurine ceratopsian dinosaurs which lived in the Late Cretaceous, in the middle Campanian stage. Its remains, two bone beds, were discovered by Phillip J. Currie in the Oldman Formation of Alberta, Canada, and its type and only species, Coronosaurus brinkmani, was first described in 2005, as a new species within the genus Centrosaurus. Later studies questioned the presence of a direct relationship, and in 2012 it was named as a separate genus. Coronosaurus means "crowned lizard", coming from "corona", Latin for crown, and "sauros", Greek for lizard; this name refers to the unique, crown-like shape of the horns on the top of its frill. Like other ceratopsids, Coronosaurus had a large frill and horns on its head. These include a small pair of brow horns over its eyes, a large nasal horn on its snout, and, unique among ceratopsians, irregular, spiky bone masses on its frill. Growing up to around long and in weight, it was mid-sized for its kind. The genus is classified as a member of the Centrosaurini, a group of derived centrosaurines which has also been found include taxa such as Styracosaurus, Spinops, Rubeosaurus, and Centrosaurus, the genus it was originally placed within. Coronosaurus is known from two bone beds, BB 138 and MRR BB, located in the upper unit of the Oldman Formation, of the Belly River Group, excavated by Philip Currie between 1996 and 2000. Most of the ceratopsid material, if not all, from BB 138 in Dinosaur Provincial Park, Alberta, and the MRR BB near Warner, Alberta, was referred to C. brinkmani. Bone bed 138 is located approximately from Brooks, Alberta, in the Oldman Formation and below the contact with the Dinosaur Park Formation. The MRR BB located approximately southwest of BB 138, is also from the Oldman Formation. These bone beds date to the middle Campanian stage of the Late Cretaceous period. Both the specimens and the precise localities are archived at the Royal Tyrrell Museum of Palaeontology, in Drumheller, Alberta. Michael J. Ryan and Anthony P.

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Related concepts (9)

Pachyrhinosaurus

Pachyrhinosaurus (meaning in Greek "thick-nosed lizard", from Παχυ (pachy), thick; ρινό (rinó), nose; and σαυρος (sauros), lizard) is an extinct genus of centrosaurine ceratopsid dinosaur from the Late Cretaceous period of North America. The first examples were discovered by Charles M. Sternberg in Alberta, Canada, in 1946, and named in 1950. Over a dozen partial skulls and a large assortment of other fossils from various species have been found in Alberta and Alaska.

Achelousaurus

Achelousaurus (pronəˌkiːloʊ-ˈsɔːrəs,_ˌækɪˌloʊəˈsɔːrəs) is a genus of centrosaurine ceratopsid dinosaur that lived during the Late Cretaceous Period of what is now North America, about 74.2 million years ago. The first fossils of Achelousaurus were collected in Montana in 1987, by a team led by Jack Horner, with more finds made in 1989. In 1994, Achelousaurus horneri was described and named by Scott D. Sampson; the generic name means "Achelous lizard", in reference to the Greek deity Achelous, and the specific name refers to Horner.

Timeline of ceratopsian research

This timeline of ceratopsian research is a chronological listing of events in the history of paleontology focused on the ceratopsians, a group of herbivorous marginocephalian dinosaurs that evolved parrot-like beaks, bony frills, and, later, spectacular horns. The first scientifically documented ceratopsian fossils were described by Edward Drinker Cope starting in the ; however, the remains were poorly preserved and their true nature was not recognized. Over the next several decades, Cope named several such genera and species.