In Depth With an estimated length of about nine meters long for the holotype individual, Sonidosaurus was actually pretty small for a late Cretaceous titanosaur. Hailing from the Iren Dabasu Formation, Sonidosaurus may have been preyed upon by tyrannosaurs of the time such as Alectrosaurus. Further Reading - A new titanosaurian sauropod from Late Cretaceous … Read more
In Depth Bainoceratops was described as a genus of protoceratopsid ceratopsian. However the genus has only been described from a partial vertebral column, and although this has previously been seen to be enough to distinguish Bainoceratops from other genera, some authors now consider Bainoceratops to actually be a synonym to the much more famous Protoceratops, … Read more
In Depth Huanansaurus is a genus of oviraptorid dinosaur that lived in China during the late Cretaceous. The holotype of Huanansaurus consists of an almost complete skull as well as a good proportion of post cranial remains including vertebrae and parts of the arms and legs. These have also led to the interpretation that Huanansaurus … Read more
In Depth Chilantaisaurus has had a jumbled taxominc history since its initial discovery mainly due to the inclusion of fragmentary remains that were later found to represent other, although similar dinosaurs. One example is Chilantaisaurus maortuensis which has been found to represent a carcharodontosaurid theropod and has since been renamed Shaochilong. Another current species of … Read more
In Depth The type specimen was originally assigned to the genus Microceratops (now a synonym to Microceratus), Graciliceratops seems to have been a small and lightly built ceratopsian dinosaur. Graciliceratops seems to have been more comfortable in a bipedal posture, but already it is clear that Graciliceratops would have been easily able to adopt a … Read more
In Depth Although only known from partial skull material Sinoceratops displays features that are seen in both the centrosaurine and chasmosaurine lines of the ceratopsian dinosaurs. Although larger than others of the group, Sinoceratops is considered to be a basal centrosaurine, and its discovery has shed a little more light on ceratopsian evolution. Unfortunately however, … Read more
In Depth Jiangxisaurus is a genus of oviraptorid dinosaur that lived in China during the late Cretaceous. Other oviraptorid dinosaurs known from the Nanxiong Formation where the holotype specimen of Jiangxisaurus was found include Banji, Ganzhousaurus, Huanansaurus and Nankangia. Further Reading - A New Oviraptorid Dinosaur (Theropoda: Oviraptorosauria) from the Late Cretaceous of Jiangxi Province, … Read more
In Depth Siamosaurus is a little known and often considered dubious genus of spinosaurid dinosaur since it has so far only been described from teeth. Siamosaurus was the first and only known genus of spinosaurid dinosaur known from Asia until the 2012 description of Ichthyovenator from partial post cranial bones. Like other spinosaurids, Siamosaurus was … Read more
In Depth Initially thought to be a juvenile Megaraptor, Unenlagia was found to not only be a separate species but one that would challenge the notions for the origins of flight. Unenlagia fits into the Unenlagiinae group, which is also considered by some to be the rightful home of the dromaeosaur Rahonavis. If correct, that … Read more
In Depth One of the more popular hadrosaurids, Tsintaosaurus is actually not known by many individuals. The popularity of Tsintaosaurus is all down to the forward pointing crest that adorns the top of the skull. There was one widespread speculation that this crest was simply a product of the fossilisation process, and that the bone … Read more