All Topics  
Ceratopsidae

 
Ceratopsidae

 
   Email Print
   Bookmark   Link
 

 

Ceratopsidae
 
 
  Topics Ceratopsidae Topic Home

Ceratopsidae (sometimes spelled Ceratopidae) is a speciose group of marginocephalia
Marginocephalia

Marginocephalia is a clade of ornithischian dinosaurs that includes the thick-skulled pachycephalosauria, and horned ceratopsians. They were all herbivores, walking on two or four legs, and are characterized by a bony ridge or frill the back of the skull....
n dinosaur
Dinosaur

Dinosaurs were the dominant vertebrate animals of Landform ecosystems for over 160 million years, from the late Triassic Period until the end of the Cretaceous Period , when most of them became extinct in the Cretaceous?Tertiary extinction event....
s including Triceratops
Triceratops

Triceratops is an extinct genus of herbivore Ceratopsidae dinosaur which lived during the Maastrichtian stage of the Late Cretaceous Period , around 68 to 65 mya in what is now North America....
 and Styracosaurus
Styracosaurus

Styracosaurus was a genus of herbivore ceratopsian dinosaur from the Cretaceous Period , about 76.5 to 75.0 million years ago. It had four to six long horns extending from its neck frill, a smaller horn on each of its cheeks, and a single horn protruding from its nose, which may have reached dimensions of around 60 centimeters lon...
. All known species were quadrupedal herbivores from the Upper Cretaceous
Cretaceous

The Cretaceous , usually abbreviated K for its German translation Kreide, is a geologic period from circa to million years ago . In the geologic timescale, the Cretaceous follows on the Jurassic period and is followed by the Paleogene period....
 of Western North America
North America

North America is the northern continent of the Americas, situated in the Earth's northern hemisphere and almost totally in the western hemisphere....
 and are characterized by beaks, rows of shearing teeth in the back of the jaw, and elaborate horns and frills. The group is divided into two subfamilies. The Ceratopsinae or Chasmosaurinae are generally characterized by long, triangular frills and well-developed brow horns.






Discussion
Ask a question about 'Ceratopsidae'
Start a new discussion about 'Ceratopsidae'
Answer questions from other users
Full Discussion Forum



Encyclopedia


Ceratopsidae (sometimes spelled Ceratopidae) is a speciose group of marginocephalia
Marginocephalia

Marginocephalia is a clade of ornithischian dinosaurs that includes the thick-skulled pachycephalosauria, and horned ceratopsians. They were all herbivores, walking on two or four legs, and are characterized by a bony ridge or frill the back of the skull....
n dinosaur
Dinosaur

Dinosaurs were the dominant vertebrate animals of Landform ecosystems for over 160 million years, from the late Triassic Period until the end of the Cretaceous Period , when most of them became extinct in the Cretaceous?Tertiary extinction event....
s including Triceratops
Triceratops

Triceratops is an extinct genus of herbivore Ceratopsidae dinosaur which lived during the Maastrichtian stage of the Late Cretaceous Period , around 68 to 65 mya in what is now North America....
 and Styracosaurus
Styracosaurus

Styracosaurus was a genus of herbivore ceratopsian dinosaur from the Cretaceous Period , about 76.5 to 75.0 million years ago. It had four to six long horns extending from its neck frill, a smaller horn on each of its cheeks, and a single horn protruding from its nose, which may have reached dimensions of around 60 centimeters lon...
. All known species were quadrupedal herbivores from the Upper Cretaceous
Cretaceous

The Cretaceous , usually abbreviated K for its German translation Kreide, is a geologic period from circa to million years ago . In the geologic timescale, the Cretaceous follows on the Jurassic period and is followed by the Paleogene period....
 of Western North America
North America

North America is the northern continent of the Americas, situated in the Earth's northern hemisphere and almost totally in the western hemisphere....
 and are characterized by beaks, rows of shearing teeth in the back of the jaw, and elaborate horns and frills. The group is divided into two subfamilies. The Ceratopsinae or Chasmosaurinae are generally characterized by long, triangular frills and well-developed brow horns. The Centrosaurinae had well-developed nasal horns or nasal bosses, shorter and more rectangular frills, and elaborate spines on the back of the frill.

These horns and frills show remarkable variation and are the principal means by which the various species have been recognized. Their purpose is not entirely clear. Defense against predators is one possible purpose - although the frills are comparatvely fragile in many species - but it is more likely that, as in modern ungulates, they may have been secondary sexual characteristics used in displays or for intraspecific combat. The massive bosses on the skulls of Pachyrhinosaurus
Pachyrhinosaurus

Pachyrhinosaurus is a genus of ceratopsid dinosaur from the Late Cretaceous geologic period of North America. The first examples were discovered by Charles M....
 and Achelosaurus resemble those formed by the base of the horns in modern musk oxen, suggesting that they may have butted heads. Centrosaurines have frequently been found in massive bone beds with few other species present, suggesting that the animals might have lived in large herds.

Taxonomy

  • Family Ceratopsidae
    • Subfamily Centrosaurinae
      Centrosaurinae

      The Centrosaurinae is a subfamily of ceratopsid dinosaurs named by paleontologist Lawrence Lambe, in 1915, with Centrosaurus as the Type . The centrosaurines are further divided into two tribes, the centrosaurins and the pachyrhinosaurins....
      • Achelousaurus
        Achelousaurus

        Achelousaurus is a genus of Centrosaurinae ceratopsid dinosaur from the Late Cretaceous Period of what is now North America. It was a quadrupedal herbivore with a parrot-like beak, a rough boss on the snout and two more behind the eyes, and two horns on the end of its long bony neck frill....
         - (Montana
        Montana

        Montana is a U.S. state in the Western United States. The western third of the state contains numerous mountain ranges; other 'island' ranges are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains....
        , USA)
      • Albertaceratops
        Albertaceratops

        Albertaceratops was a genus of centrosaurinae ceratopsid dinosaur from the middle Campanian-age Upper Cretaceous Oldman Formation of Alberta, Canada, and Judith River Formation of Montana, United States....
         - (Alberta
        Alberta

        Alberta is one of Canada Canadian Prairies Provinces and territories of Canada. It became a province on September 1, 1905.Alberta is located in western Canada, bounded by the provinces of British Columbia to the west and Saskatchewan to the east, the Northwest Territories to the north, and the U.S....
        , Canada & Montana, USA)
      • ? Avaceratops
        Avaceratops

        Avaceratops is a genus of small ceratopsian dinosaur which lived during the late Campanian during the Late Cretaceous Period in what is now the Northwest United States....
         - (Montana, USA)
      • Brachyceratops
        Brachyceratops

        Brachyceratops ) is a genus of ceratopsian dinosaur. It lived during the Late Cretaceous Period . Its fossils have been found in Alberta, Canada and Montana, United States....
         - (Montana, USA & Alberta, Canada)
      • Centrosaurus
        Centrosaurus

        Centrosaurus is an herbivorous Ceratopsidae dinosaur from the late Cretaceous of North America, approximately 75 million years ago.The name refers to the series of small hornlets placed along the margin of the frill, and not to the horn on its nose ....
         - (Alberta, Canada)
      • Einiosaurus
        Einiosaurus

        Einiosaurus is a medium-sized centrosaurine ceratopsian from the Upper Cretaceous Two Medicine Formation of northwestern Montana. The generic epithet means 'buffalo lizard', in a combination of Blackfeet Indian and Latinized Ancient Greek and the specific epithet means 'forward-curving horn' in Latin and Ancient Greek....
         - (Montana, USA)
      • Monoclonius
        Monoclonius

        Monoclonius was a ceratopsian dinosaur from the Judith River Formation of Late Cretaceous Montana and Canada. It is often confused with Centrosaurus, a similar genus of ceratopsian ....
         - (Montana, USA & Alberta, Canada)
      • Pachyrhinosaurus
        Pachyrhinosaurus

        Pachyrhinosaurus is a genus of ceratopsid dinosaur from the Late Cretaceous geologic period of North America. The first examples were discovered by Charles M....
        - (Alberta, Canada & Alaska
        Alaska

        Alaska is the largest U.S. state of the United States by area; it is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait....
        , USA)
      • Styracosaurus
        Styracosaurus

        Styracosaurus was a genus of herbivore ceratopsian dinosaur from the Cretaceous Period , about 76.5 to 75.0 million years ago. It had four to six long horns extending from its neck frill, a smaller horn on each of its cheeks, and a single horn protruding from its nose, which may have reached dimensions of around 60 centimeters lon...
         - (Alberta, Canada & Montana, USA)
    • Subfamily Ceratopsinae (= Chasmosaurinae)
      • Agujaceratops
        Agujaceratops

        Agujaceratops is a newly reclassified genus of ceratopsian dinosaur. Originally known as Chasmosaurus mariscalensis and described by Lehman in 1989, it was moved to a new genus by Lucas, Sullivan and Hunt in 2006....
         - (Texas
        Texas

        Texas is a U.S. state located in the South Central United States, nicknamed the Lone Star State. Texas is the second largest U.S. state in both area and population, spanning , and with a growing population of 24.3 million residents....
        , USA)
      • Anchiceratops
        Anchiceratops

        Anchiceratops is a genus of chasmosaurinae ceratopsid dinosaur from the Late Cretaceous Period of western North America. Like other ceratopsids, it was a quadrupedal herbivore with three horns on its face, a parrot-like beak, and a long frill extending from the back of its head....
          - (Alberta, Canada)
      • Arrhinoceratops
        Arrhinoceratops

        Arrhinoceratops is a genus of ceratopsian dinosaur. The name was coined as its original describer concluded it had no nose-horn, however further analysis revealed this not to be the case....
          - (Alberta, Canada)
      • ? Ceratops
        Ceratops

        Ceratops was a ceratopsian dinosaur which lived during the Late Cretaceous. Its fossils have been found in Montana and Alberta, Canada. Although poorly known, Ceratops is important in the history of dinosaurs, since it is the type species upon which both Ceratopsia and Ceratopsidae are based....
         - (Montana, USA & Alberta, Canada)
      • Chasmosaurus
        Chasmosaurus

        Chasmosaurus is a genus of Ceratopsidae dinosaur from the Upper Cretaceous Period of North America. Its name means 'opening lizard', referring to the large openings in its frill ....
         - (Alberta, Canada)
      • Eotriceratops
        Eotriceratops

        Eotriceratops is a genus of ceratopsian dinosaur which lived during the late Cretaceous period. Its fossils have been found in the Horseshoe Canyon Formation....
         - (Alberta, Canada)
      • Nedoceratops - (Wyoming
        Wyoming

        The State of Wyoming is a sparsely populated U.S. state in the Northwestern United States of the United States. The majority of the state is dominated by the mountain ranges and rangelands of the Rocky Mountains, while the easternmost section of the state is a high altitude prairie region known as the High Plains ....
        , USA)
      • Pentaceratops
        Pentaceratops

        Pentaceratops is a genus of Ceratopsidae dinosaur from the late Cretaceous Period of what is now North America. Its name means "five-horned face", derived from the Ancient Greek "penta/p??ta" meaning 'five', "ceras/???a?" meaning 'horn' and "-ops/??" meaning 'face', in reference to its two long epijugal bone...
         - (New Mexico
        New Mexico

        New Mexico is a U. S. State located in the Southwestern United States of the United States. Inhabited by Native Americans in the United States populations for many centuries, it has also has been part of the Spanish Empire viceroyalty of New Spain, part of Mexico, and a U.S....
        , USA)
      • Torosaurus
        Torosaurus

        Torosaurus was a genus of Ceratopsidae dinosaur. It had one of the largest skulls of any land animal known, reaching 2.6 metre in length....
         - (Wyoming, Montana, South Dakota
        South Dakota

        South Dakota is a U.S. state located in the Midwestern United States of the United States of America. It is named after the Lakota people and Sioux Sioux Native Americans in the United States tribes....
        , North Dakota
        North Dakota

        North Dakota is a U.S. state located in the Midwestern United States and Western United States regions of the United States of America. North Dakota is the 19th largest state by area in the US; it is the 48th most populous, with just over 640,000 residents as of 2006....
        , & Utah
        Utah

        The State of Utah is a western United States U.S. state of the United States. It was the List of U.S. states by date of statehood admitted to the United States on January 4, 1896....
        , USA & Saskatchewan
        Saskatchewan

        Saskatchewan is a prairie provinces in Canada, which has an area of 588,276.09 square kilometres and a population of 1,015,895 , mostly living in the southern half of the province....
        , Canada)
      • Triceratops
        Triceratops

        Triceratops is an extinct genus of herbivore Ceratopsidae dinosaur which lived during the Maastrichtian stage of the Late Cretaceous Period , around 68 to 65 mya in what is now North America....
         - (Montana & Wyoming, USA & Saskatchewan & Alberta, Canada)


External links

  • at DinoData