In Depth Lophostropheus was initially assigned as a specimen of Halticosaurus until 1993 it was re-classified as a second species of Liliensternus, a genus that was also previously established as a species of Halticosaurus. A new study in 2007 however concluded that while the fossils were similar, they were different enough to be established as … Read more
In Depth Qijianglong is a genus of sauropod dinosaur that lived in China during the late Jurassic. At the time of writing the genus is only known from a single juvenile, yet this juvenile is already fifteen meters long. It is uncertain how big Qijianglong could grow, but at fifteen meters just for a juvenile, … Read more
In Depth It could be said that Jobaria is a sauropod that doesn’t know what it is due to a mix of different traits. The vertebrae of Jobaria are very simple in form which has led to some suggestion that Jobaria is a primitive sauropod. Study of other areas however has led to speculation that … Read more
In Depth Superficially, Utahraptor appears to be an earlier, scaled up version of Deinonychus. Specimens of Utahraptor are fragmentary but suggest a potential size of up to seven meters long, with some more conservative estimates falling nearer six meters long. These estimates make Utahraptor a contender for one of the largest known dromaeosaurid dinosaurs, but … Read more
In Depth In modern times Szechuanosaurus is widely regarded as a dubious genus because it has only been described from a collection of isolated teeth. Also, because these teeth do not really have any specifically characteristic features, it is highly unlikely that skeletal remains could be later attributed to these teeth (like what happened with … Read more
In Depth Elaphrosaurus has been something of an enigma for palaeontologists as while it is generally regarded as a ceratosaur, its proportions are similar to some other kinds of theropods. The overall appearance of Elaphrosaurus is that of a lightweight hunter that relied more upon speed rather than strength to take down prey. The tibia … Read more
In Depth Venenosaurus, meaning ‘poison lizard’ acquired its name from being discovered in the Poison Strip Member of the Cedar Mountain Formation, while the type species, V. dicrocei, is in honour of Tony DiCroce, the person who first discovered the remains. Other sauropod dinosaurs from the Cedar Mountain Formation, albeit from different Members, include Abydosaurus, … Read more
In Depth Smaller velociraptorine dromaeosaurs seem to have been one of the most important types of dinosaur in Asia during the Late Cretaceous as evidenced by the ever growing number of remains and genera. Linheraptor was similar in form to most others such as Velociraptor and it may have lived and hunted in pretty much … Read more
In Depth In 2006 the palaeontologists M. Sadiq Malkani described five new genera of titanosaur, Marisaurus, Balochisaurus, Sulaimanisaurus, Khetranisaurus and Pakisaurus, all from caudal vertebrae. From these only Marisaurus and Balochisaurus have had skull remains attributed to them, and only Marisaurus has (partial) rear limb bones attributed to the genus. Marisaurus and Balochisaurus were also … Read more
In Depth Uberabatitan is a genus of titanosaurid sauropod dinosaur that is known from the Marilla Formation of the bauru group of Brazil. Being Maastrichtian in age, Uberabatitan would have been one of the last titanosaurs to live before the KT extinction ended the reign of the dinosaurs. Further Reading - Uberabatitan ribeiroi, a new … Read more