In Depth When fossils of this dinosaur were originally described as Lambeosaurus laticaudus, the estimated size of the species was given as between fifteen and sixteen and a half meters long, something that causes inaccurate size quotations for Lambeosaurus to this day even though larger individuals of this genus are around the nine meter mark. … Read more
In Depth Weewarrasaurus is a genus of ornithischian dinosaur that lived in Australia during the late Cretaceous. At the time of writing, Weewarrasaurus is known from only two dentaries’ (lower jaws), so precise details about this dinosaur are otherwise unknown. Further Reading - Ornithopod diversity in the Griman Creek Formation (Cenomanian), New South Wales, Australia. … Read more
In Depth Iguanacolossus acquired its name from its similarity to another dinosaur named Iguanodon. Although Iguanacolossus might not actually have been any bigger than the largest examples of Iguanodon, it might still have been the largest ornithopod plant eating dinosaur alive in North America at this stage of the Cretaceous, with the only plant eaters … Read more
In Depth Bayannurosaurus is a genus of iguanodont dinosaur that lived in Asia during the early Cretaceous. Further Reading - A large-sized basal ankylopollexian from East Asia, shedding light on early biogeographic history of Iguanodontia. - Science Bulletin 63:556-563. - X. Xu, Q.-W. Tan, Y.-L. Gao, Z.-Q. Bao, Z.-G. Yin, B. Guo, J.-Y. Wang, L. … Read more
In Depth Batyrosaurus has been described as a basal hadrosauroid, the group of ornithopod dinosaurs that would give rise to the more derived hadrosaurids such as Edmontosaurus and Saurolophus towards the late Cretaceous. Compared to other hadrosauroids, the describers considered Batyrosaurus to be more advanced than Altirhinus, but more primitive than Probactrosaurus. In life Batyrosaurus … Read more
In Depth Trinisaura was a fairly small ornithopod dinosaur that lived in Antarctica back before it became covered by snow and ice. Not that much can be inferred about the lifestyle of Trinisaura due to lack of more complete remains, but as a small ornithopod it probably roamed around on just its rear legs as … Read more
In Depth Rhinorex is a genus of saurolophine hadrosaur that lived in the USA during the late Cretaceous. Rhinorex can be further identified as a kritosaurine due to the development of the bones on the snout which would have formed a bony display structure in life. However, Rhinorex is also noted as being very similar … Read more
In Depth Riabininohadros is a genus of large ornithischian dinosaur that lived on Europe towards the end of the Cretaceous period. Further Reading - Riabininohadros, a New Genus for the Ornithischian Dinosaur Orthomerus weberae (Ornithopoda, Iguanodontia) from the Late Cretaceous of Crimea. - Paleontological Journal. 54 (3): 112–114. - A. V. Lopatin & A. O. … Read more
In Depth Since its naming in 1915, the Kangnasaurus genus of dinosaur has often been treated as dubious, mostly because the holotype of this dinosaur is actually a tooth. Other hind limb remains were also attributed to the genus however, and these remains do actually seem to be distinct enough for some to consider Kangnasaurus … Read more
In Depth Anasazisaurus is currently only known from a single skull, but one that has a flange of bone rising from the top of its snout. Because this crest is solid, Anasazisaurus has been identified as a saurolophine hadrosaurid. The skull of Anasazisaurus was once attributed to the genus Kritosaurus, but because the skull contains … Read more