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Skulls of the three species compared: P. perotorum (with inaccurate epiparietal placement), P. canadensis, and P. lakustai Pachyrhinosaurus canadensis, was described in 1950 by Charles Mortram Sternberg based on the holotype incomplete skull NMC 8867, and the paratype incomplete skull NMC 8866, which included the anterior part of the skull but was lacking the right lower mandible, and the "beak".
Agathaumas (/ æ ɡ ə ˈ θ ɔː m ə s /; "great wonder") is a dubious genus of a large ceratopsid dinosaur that lived in Wyoming during the Late Cretaceous (late Maastrichtian stage, 66 million years ago).
The known fossil material of Unnuakomys consists of over 60 teeth, along with multiple dentaries and a maxillary fragment. These fossils are from the Pediomys Point locality of the Prince Creek Formation.
A Carnotaurus hunts a herd of dinosaurs, destroys a Iguanodon nest, and kills a Pachyrhinosaurus. The lone surviving Iguanodon egg is stolen by an Oviraptor, and, after a series of mishaps, arrives at an island inhabited by prehistoric lemurs. Plio, the daughter of lemur patriarch Yar, names the newly-hatched baby Aladar and raises him ...
In fact, experts now believe that the entire site could have been the capital of a prehistoric kingdom, stemming from the ancient Neolithic Dawenkou Culture that existed from 4000 B.C. to 2600 B.C.
Mounted skeletons of Tyrannosaurus (left) and Apatosaurus (right) at the AMNH. Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject of active research.
Parasaurolophus (/ ˌ p ær ə s ɔː ˈ r ɒ l ə f ə s,-ˌ s ɔːr ə ˈ l oʊ f ə s /; meaning "beside crested lizard" in reference to Saurolophus) [2] is a genus of hadrosaurid "duck-billed" dinosaur that lived in what is now western North America and possibly Asia during the Late Cretaceous period, about 76.9–73.5 million years ago. [3]
The Melanorosauridae were a family of sauropodomorph dinosaurs which lived during the Late Triassic and Early Jurassic.The name Melanorosauridae was first coined by Friedrich von Huene in 1929.