In Depth One of the biggest fields of study regarding Torvosaurus is its supposed size and possible claim to being the largest known Jurassic era theropod dinosaur. Though known from only partial remains, fossils from the Morrison Formation have been compared to other better preserved theropod genera of the time to yield estimates of around … Read more
In Depth The holotype skull of Theiophytalia was originally described as belonging to Camptosaurus by Othniel Charles Marsh in 1886, and in 1909 used as a base to reconstruct Camptosaurus by Charles W. Gilmore. The problem here is that this skull is slightly different to other known Camptosaurus skulls. Additionally, Camptosaurus is known to have … Read more
In Depth Falcarius is a transitory species of therizinosaur that marks the change from meat eating to plant eating behaviour. Falcarius is considered by some to have eaten both making it an omnivore, although the leaf shaped teeth seem to be more suited to a herbivorous diet. Further Reading – A primitive therizinosauroid dinosaur from … Read more
In Depth Draconyx is a genus of ornithischian dinosaur that lived in Portugal during the late Jurassic. Although the currently available fossils don’t reveal the whole skeleton, Draconyx still seems to have been similar to Camptosaurus, albeit a little smaller. Further Reading - Draconyx loureiroi, a new camptosauridae (Dinosauria, Ornithopoda) from the Late Jurassic of … Read more
In Depth Isaberrysaura is a genus of dinosaur that lived in South America during the middle Jurassic. Initially described as a neoornithischian, later analysis has suggested that Isaberrysaura is actually a very primitive stegosaur. Although much detail about Isaberrysaura is still unknown, it is possible that Isaberrysaura may have still been bipedal despite being a … Read more
In Depth Although it seems to have lived towards the end of the Jurassic, Suuwassea appears to have been a basal diplodocid sauropod dinosaur that was more primitive in form than other better known sauropods such as Diplodocus and Apatosaurus. This would make Suuwassea a late surviving form. At an estimated length approaching fifteen meters, … Read more
In Depth The holotype tooth of this genus was originally described by the German palaeontologist Werner Janensch in 1920 as belonging to the genus Labrosaurus. The first reassignment came about when Labrosaurus was declared to be a synonym of Allosaurus, but the teeth in question were not seen to be similar to those known for … Read more
In Depth Further Reading - A new sauropod dinosaur of Cretaceous from Jingshan, Zhejiang province. - Vertebrata PalAsiatica 39(4):272-281. - F. Tang, X.-M. Kang, Z.-S. Jin, F. Wei & W.-T. Wu - 2001.
In Depth Yizhousaurus is a genus of sauropodomorph dinosaur that lived in Asia during the early Jurassic, and is a rare example of such a dinosaur where the skull is known, and in an almost perfect state. Further Reading - A new sauropodiform dinosaur with a ‘sauropodan’ skull from the Lower Jurassic Lufeng Formation of … Read more
In Depth Nedcolbertia is a genus of theropod dinosaur known to have lived in the Western portion of the United States during the early Cretaceous. Nedcolbertia is known from the partial remains of at least three individuals, though much of these remains were damaged by erosion before their discovery. Still, enough is known about Nedcolbertia … Read more