In Depth Itemirus is a genus of dromaeosaurid dinosaur that so far is only known from very incomplete fossil remains. Further Reading - Brain-case structure in the carnosaur Itemirus n. gen. and some aspects of the cranial anatomy of dinosaurs. - Paleontological Journal 1976(3):361-369. - S. M. Kurzanov - 1976. - Dromaeosauridae (Dinosauria: Theropoda) from … Read more
In Depth Irisosaurus is a genus of sauropodomorph that lived in Asia during the early Jurassic. Though only known from partial remains, Irisosaurus is thought to have been similar to the genus Mussaurus. Further reading - A new species of early-diverging Sauropodiformes from the Lower Jurassic Fengjiahe Formation of Yunnan Province, China. - Scientific Reports. … Read more
In Depth For a long time Caenagnathasia has been known from only jaw material, and even with the subsequent discovery of an upper leg bone and vertebrae, not much is known about this dinosaur. Two facts can however be established about Caenagnathasia. First, Caenagnathasia is one of if not the smallest oviraptosaur currently known. Second, … Read more
In Depth Chuanjiesaurus is a genus of sauropod dinosaur that lived in China around the mid Jurassic period. Chuanjiesaurus seems to be similar to the genus Mamenchisaurus, something which has led to Chuanjiesaurus sometimes identified as a mamenchisaurid sauropod. Further Reading - [Lower, Middle, and Upper Jurassic divisions of the Lufeng region of Yunnan province]. … Read more
In Depth Remarkably when Troodon was first ‘discovered’ it was only known from a tooth, and it was the description of this tooth that gave rise to the genus. Although naming a creature after only discovering its teeth is hard to imagine today, it was a common place practice in the nineteenth century, and at … Read more
In Depth Although the name Gondwanatitan implies that this dinosaur was ‘titanic’, it was actually quite modest in size, especially when you compare it to other South American giants like Argentinosaurus. Instead the name is a play on the classification of Gondwanatitan which is considered to be one of the titanosaurs, a special group of … Read more
In Depth This tyrannosaur is one of the earliest known and the fact that it hails from Western Europe means that the origins of the tyrannosaurs need to be carefully considered. Given that the largest and last of the group are known mostly from North America, and the smallest and earliest are known from Asia, … Read more
In Depth Haplocanthosaurus was a genus of sauropod dinosaur that lived in North America during the late Jurassic period. The name Haplocanthosaurus was actually the second choice of name for this dinosaur as the palaeontologist who first described it, John Bell Hatcher, originally chose the name Haplocanthus. However, after this Hatcher became aware of a … Read more
In Depth Streptospondylus could have become the first dinosaur to be scientifically recognised. Starting in 1770 vertebrae and limb remains were steadily recovered and over the course of the following years many fossils for separate locations were collected before being sent to the Museum National d’Histoire Naturelle in Paris, France in 1800. These fossils were … Read more
In Depth There is a lot of mystery surrounding Iliosuchus as the genus is only based upon the description of three ilia. These parts are not diagnostic enough to clearly identify what kind of theropod dinosaur Iliosuchus was, though in England during the Mid Jurassic the dominant theropod dinosaurs were the megalosaurs. A similarity to … Read more