In Depth Hadrosaurs have a long association with North America, but they are known from other areas like Asia where they are usually represented by incomplete remains. Olorotitan however was almost complete and became widespread through palaeontology circles as the most complete lambeosaurine hadrosaurid outside of North America. With eighteen vertebrae Olorotitan is also remarkable … Read more
In Depth Cionodon is a dubious genus of hadrosaur that is based only upon very partial and fragmentary remains. So far two species of Cionodon continue to exist, but because of the poor quality of their fossils, it is next to impossible to assigned further remains to them, or even to identify them as synonymous … Read more
In Depth Barsboldia is so far only known from vertebrae and some fragmentary remains of other parts of the post cranial skeleton. At the time of writing no skull is known for the genus, yet the original describers still chose to class Barsboldia as a lambeosaurine hadrosaurid dinosaur. Later studies however have cast doubts about … Read more
In Depth Wulagasaurus is one of many hadrosaurs that have been found from the Amur River region. Although the genus is represented by a collection of scattered fossils in a bone bed, Wulagasaurus seems to have been a saurolophine hadrosaurid that was possibly related to Maiasaura and Bachylophosaurus. Wulagasaurus was not the only new hadrosaur … Read more
In Depth Charonosaurus is immediately recognisable to its similarity to the better known Parasaurolophus. However Charonosaurus was seems to have been considerably larger than its North American cousin, as well as living later after Parasaurolophus had disappeared in North America. Like with Parasaurolophus, the crest of Charonosaurus is thought to have served both a display … Read more
In Depth Adynomosaurus is a genus of lambeosaurine hadrosaurid dinosaur that lived in Spain during the late Cretaceous. Further Reading - Adynomosaurus arcanus, a new lambeosaurine dinosaur from the Late Cretaceous Ibero-Armorican Island of the European Archipelago. - Cretaceous Research. 96: 19–37. - Albert Prieto-M�rquez, Victor, Fondevilla, Albert G. Sell�s, Jonathan R.Wagner & �ngel Galobart … Read more
In Depth Lapampasaurus is a late Cretaceous era genus of hadrosaur. Although only named from partial remains, the discovery is of yet another hadrosaur from South America. The continent of South America has long been assumed to have been isolated from North America during the Cretaceous, but the presence of hadrosaur genera such as Lapampasaurus, … 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 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 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