In Depth Not a lot is known about Eshanosaurus, yet it has still managed to be a controversial dinosaur. Thought to be one hundred and ninety-six million years old, the partial dentary of Eshanosaurus (currently the only part known) goes as far back as the Hettangian stage of the Jurassic. The describers of the dentary … Read more
In Depth The nasal horn of Einiosaurus is quite unusual in that it curves forward to point towards the ground, something which is reflected in the species name E. procurvicornis which translates to English as ‘forward curving horn’. In young Einiosaurus this horn is thought to have started out small, but as the individual grew … Read more
In Depth Atlantosaurus was named by Othniel Charles Marsh in 1877, though his first choice of name was Titanosaurus. However, Titanosaurus had actually been established as a genus name by Richard Lydekker earlier that same year, so Marsh renamed his fossils as Atlantosaurus. At the time of their original naming, the two vertebrae that are … Read more
In Depth Podokesaurus is often spoken about as being a valid genus, yet the partial remains of the fossils attributed to this genus are considered to be near identical of another dinosaur named Coelophysis. In fact the genus is sometimes referenced as Coelophysis holyokensis, though the genus name Podokesaurus also still appears in use despite … Read more
In Depth Not only was Cymbospondylus one of earliest ichthyosaurs named, it was also one of the first to swim in the Triassic oceans. Cymbospondylus is an example of the primitive ichthyosaurs that were yet to evolve dorsal fins and developed tail flukes which left it with a long body, half of which was tail. … Read more
In Depth Shanyangosaurus is a little known genus of coelurosaurian dinosaur that lived in China. Further Reading - The development and environmental changes of the intermontane basins in the Eastern part of Qinling Mountains. - Geological Publishing House, Beijing. - X. Xue, Y. Zhang, Y. Bi, L. Yue & D.-K. Chen - 1996.
In Depth Acheroraptor was the first confirmed genus of dromaeosaurid dinosaur to be known as coming from the world famous Hell Creek Formation of North America. Dromaeosaurid teeth had been known before this time, but they had often been presumed to have come from either Dromaeosaurus or Saurornitholestes, though these teeth are now more commonly … Read more
In Depth Anteophthalmosuchus fossils were originally attributed to Goniopholis crassidens, another genus of prehistoric crocodile from across Europe and Asia. A new study over a century later however found the fossils to actually belong to a distinct genus of crocodile rather than the type species of Goniopholis. Anteophthalmosuchus was chosen as the name of the … Read more
In Depth At the time of writing Tratayenia is only known from a partial post cranial remains, mostly associated with the spine and hips, but the discovery of even these scant remains has significantly improved our understanding of the South American dinosaurs in the Cretaceous. It was long thought that carcharodontosaurid theropod dinosaurs (e.g. Mapusaurus) … Read more
In Depth Scolosaurus was quick to become one of the better known ankylosaurid dinosaurs of the second half of the early twentieth century, at times rivalling even Ankylosaurus in popular media about dinosaurs. This was thanks largely to the relatively complete preservation of the holotype individual was considerably higher than most other ankylosaurids known at … Read more