In Depth Although only named from a partial upper jaw, this is still enough to identify Angulomastacator as a distinct genus of hadrosaurid dinosaur because the front portion of the jaw bends down at an angle of forty-five degrees. If you are unfamiliar with how much this each, look at or imagine a clock face … Read more
In Depth Just like with Ankylosaurus, Nodosaurus is the type genus of a whole group of armoured dinosaurs, yet it is also one of the most poorly represented by fossil material. The nodosaurids are thought to be the ancestors of the ankylosaurids, although to have continued to thrive even in the presence of their more … Read more
In Depth Sanxiasaurus is a genus of small ornithischian dinosaur that lived in China during the mid Jurassic. Further Reading - A neornithischian dinosaur from the Middle Jurassic Xintiangou Formation of Yunyang, Chongqing, China: the earliest record in Asia. - Historical Biology: 1–14. - Ning Li, Hui Dai, Chao Tan, Xufeng Hu, Zhaoying Wei, Yu … Read more
In Depth Ferrisaurus is a genus of leptoceratopsian dinosaur that lived in Canada towards the end of the Cretaceous period. Further Reading - A new leptoceratopsid dinosaur from Maastrichtian-aged deposits of the Sustut Basin, northern British Columbia, Canada. - PeerJ. - Victoria Arbour & David Evans - 2019.
In Depth The first pachycepahlosaurid dinosaur known from Alaska, Alaskacephale is also one of the few dinosaurs known to have lived in the area that would become that state. Unfortunately not a lot is known about this dinosaur because of a current sever lack of remains, but the original describers believe that Alaskacephale may have … Read more
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