In Depth The most famous stegosaur from the Morrison formation is Stegosaurus itself; however the discovery of Hesperosaurus is proof that Stegosaurus was not the only dinosaur of its type around here during this point of the Jurassic. Like with Stegosaurus, Hesperosaurus had a series of large plates that ran down the length of its … Read more
In Depth Xiaosaurus is a genus of small ornithischian dinosaur that lived in China during the Jurassic. Further Reading - New ornithopod genus from the Middle Jurassic of Sichuan Basin, China . - Vertebrata PalAsiatica 21(2):168-171. - Z. Dong & Z. Tang - 1983.
In Depth Tatankacephalus is a genus of nodosaur that lived in what is now Montana during the early Cretaceous period. Best known from an incomplete skull, Tatankacephalus has been interpreted as a close relative to the better known nodosaurid dinosaur Gastonia. A different genus of nodosaurid dinosaur from the same location as Tatankacephalus is Sauropelta, … Read more
In Depth Nasutoceratops was the second genus of centrosaurine ceratopsian dinosaur to be discovered in the south west of the USA, the first genus being Diabloceratops that was named three years earlier. Back in the Cretaceous the South-west of what is now the USA was the southern portion of Laramidia, an island landmass extending from … Read more
In Depth Named using the Zuni for ‘grinding mouth’ Jeyawati’s classification is a little uncertain. Usually Jeyawati is classed as a hadrosaurid, but body features have led some researchers to place Jeyawati within the much broader ornithopod classification. Further and more complete skeletal material may yet shed more light upon the body of Jeyawati resulting … Read more
In Depth As stegosaurs go Chungkingosaurus was towards the smaller end of the scale at four meters long. The hips and humerus (upper arm bone) of Chungkingosaurus seem to be quite primitive when compared to other stegosaurs. The skull is also deep which might be a relict primitive trait, or an adaptation for supporting stronger … Read more
In Depth Penelopognathus is a genus of hadrosauroid dinosaur that lived in Mongolia during the early Cretaceous. Unfortunately, because only a partial jaw of this dinosaur has been recovered, not much is known about Penelopognathus. Further Reading - A new primitive hadrosauroid dinosaur from the Early Cretaceous of Inner Mongolia (P. R. China). - Comptes … Read more
In Depth The first Brachylophosaurus remains were discovered in Alberta in 1936, but were not named until 1953 when Charles Sternberg made the description. A second species of Brachylophosaurus was named as B. goodwini by Jack Horner in 1988; however the wider consensus today is that these individuals are actually further individuals of the genus … Read more
In Depth Fossils of Bonapartesaurus were first assigned to the genus Willinakaqe. However a few years after naming Willinakaqe, Palaeontologists came to the conclusion that that genus was based upon the collection of several different kinds of hadrosaur. This included the Paratype material of Willinakaqe which became the genus Bonapartesaurus. Bonapartesaurus was a medium sized … Read more
In Depth Serendipaceratops is often regarded as a dubious dinosaur genus, but if it is not, then it is actually the first ceratopsian dinosaur to be discovered as living in Australia. The story begins in 1993 when during the Dinosaur Cove Project, an isolated almost complete ulna bone (the same as one of the ones … Read more