Extinct Animals

Extinct animals are those species which are no longer living. This group includes prehistoric animals like dinosaurs and ice-age mammals, as well as moden species like the Dodo.

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Centrosaurus, which means "sharp-point reptile," was named by Lawrence Lambe in 1902 from specimens found along the Red Deer River in Alberta. A number of complete skulls and skeletons have since been discovered. Learn more about the Centrosaurus.


The first Chasmosaurus fossil found was part of the neck frill. It was unearthed in 1898 by Lawrence Lambe along the Red Deer River is alberta. Learn more about the Chasmosaurus and other Late Cretaceous dinosaurs.


The oviraptorids were peculiar theropods. Smallish, bipedal animals with strong beaks, they may have fed on mollusks by crushing their shells to get the soft meat inside. Learn more about the Conchoraptor is an oviraptorid is and other Late Cretaceous dinosaurs.


Corythosaurus, the "corinthian helmet reptile," was one of the most abundant duckbilled dinosaurs from the Late Cretaceous of western North America. Originally found and named by Barnum Brown of the American Museum of Natural History, Corythosaurus is also one of the best known of all dinosaurs.


With its massive head and large teeth, there is no question that Daspletosaurus was master of its world. It got its name because of its ferociousness; its name means "frightful reptile." Learn more about the Daspletosaurus and other Late Cretaceous dinosaurs.


Deinocheirus ("horrible hand") is a fascinating animal. Its front arms and three-fingered hands are nearly eight feet long. Learn more about the Deinocheirus, Late Cretaceous dinosaurs and dinosaurs of all eras.


A recently named armored dinosaur, Denversaurus is based on a badly crushed skull from South Dakota. No other parts of the skeleton have been found, so it is difficult to estimate how long or heavy the animal was. Learn more about the Denversaurus.


In 1914, Barnum Brown of the American Museum of Natural History collected a nine-inch-long skull and some foot bones from the Judith River Formation in Alberta. It was named Dromaeosaurus, which means "running reptile." Learn more about the Dromaeosaurus.


Dromiceiomimus ("emu mimic") has been found both in the Late Cretaceous Horseshoe Canyon and the Judith River Formation of Alberta. It is very similar to Struthiomimus and Ornithomimus, but had much larger eyes and longer, more slender arms. Learn more about the Dromiceiomimus.


Dryptosaurus is the only carnivorous dinosaur from the East Coast of the United States based on more than a single bone. The partial skeleton was discovered more than a hundred years ago by workers in a quarry in New Jersey. Learn more about the Dryptosaurus.


Edmontonia would not have made an easy meal for a hungry tyrannosaur. It had a heavily armored body and large, forward-pointing shoulder spines. Learn more about Edmontonia, Late Cretaceous dinosaurs and dinosaurs of all eras.


Edmontosaurus was one of the largest hadrosaurids. This flat-headed duckbilled dinosaur was originally found, described is and named by Lawrence Lambe in 1920. Learn more about the Edmontosaurus and other Late Cretaceous dinosaurs.


The Joint Polish-Mongolian Paleontological Expeditions of the 1960s produced many new kinds of dinosaurs, many of which were small theropods. One of these theropods was a Elmisaurus. Learn more about Elmisaurus.


In 1980 is altangerel Perle named Erlikosaurus andrewsi after the demon Erlik from Mongolian mythology and paleontologist Roy Chapman Andrews. It was closely related to Segnosaurus. Learn more about the Erlikosaurus.


Euoplocephalus lived at the same time and in the same areas as Edmontonia. Euoplocephalus roamed the forests cropping low plants with its broad beak. It probably ate any type of plant it came across. Learn about Euoplocephalus, Late Cretaceous dinosaurs and dinosaurs of all eras.


Gallimimus ("chicken mimic") was the largest of the ornithomimids (the "ostrich dinosaurs") known. It has been found only in the Late Cretaceous Nemegt Formation of Mongolia. Learn more about the Gallimimus and other Late Cretaceous dinosaurs.


Garudimimus brevipes was one of many dinosaurs found by the Joint Soviet-Mongolian Paleontological Expeditions of the 1970s. It was named for the Garuda bird of Hindu mythology; its name means "short-footed Garuda mimic."


The flat-headed Goyocephale was one of the most unusual pachycephalosaurs. It was found by the Joint Polish-Mongolian Paleontological Expeditions to the Gobi Desert is and was named and described in 1982. Learn more about the Goyocephale.


Hadrosaurus ("thick reptile") was the first hadrosaur skeleton to be discovered. It was named and described in 1858 by Joseph Leidy, the father of American paleontology.


Named after the flying mythical Greek creatures called Harpies that snatched victims with their hands, Harpymimus ("snatcher mimic") is the most primitive ornithomimid known. Learn more about the Harpymimus and other Late Cretaceous dinosaurs.


As its name ("even head") suggests, Homalocephale had a flat head unlike most pachycephalosaurs. It is known from limited but very good material. The single skull of Homalocephale is missing the front of the snout but is otherwise complete. Learn more about the Homocephale.


The head of Hypacrosaurus looked much like Corythosaurus. The snout was somewhat ducklike is although the nostrils were in slightly different places. Learn more about the Hypacrosaurus and other Late Cretaceous dinosaurs.


Kritosaurus was a large, flat-headed duckbilled dinosaur. It had a ridge of bone between the eyes and the snout that gave it a distinguished "Roman nose" appearance.


Lambeosaurus lived at the end of the Late Cretaceous. It was a hollow-crested hadrosaurid that lived at the same time and in the same places as Corythosaurus and Parasaurolophus. Learn more about the Lambeosaurus and other Late Cretaceous dinosaurs.


Leptoceratops, the first known protoceratopsid, was found along the Red Deer River of Alberta, Canada, in 1910. This partial skull and skeleton was named Leptoceratops gracilis.