In Depth Sinankylosaurus is a genus of ankylosaur that lived in Asia during the late Cretaceous. Though only known from partial remains, the presence of Sinankylosaurus again illustrates the similarity of animal fauna between Asia and North America during the late Cretaceous. Further Reading - A new ankylosaurian from the Late Cretaceous strata of Zhucheng, … Read more
In Depth Oohkotokia was a medium to large ankylosaurid dinosaur that is so far only known from a single individual, though other fossils gathered in the past may actually represent specimens of this genus. Oohkotokia seems to have been similar to Euoplocephalus, though is considered distinct because the skull texture of Oohkotokia is quite smooth … Read more
In Depth Originally thought to be a species of Stegosaurus at the time of the first description in 1901, the partial post cranial remains were soon identified as being a distinct genus and renamed Hoplitosaurus in 1902. The species name which honours the famous American palaeontologist Othniel Charles Marsh, who actually named the genus Stegosaurus, … Read more
In Depth When fossils of Horshamosaurus were first discovered they were originally interpreted as coming from Iguanodon, but in 1996 they were re-described as a species of Polacanthus by William Blows. However in 2015 Blows re-described this species as a whole new genus named Horshamosaurus, citing clear differences in the vertebrae and armour. At the … Read more
In Depth Zhejiangosaurus is not completely known, nor does it seem to show any special features beyond being a nodosaurid. This identification is itself important however since the only two other Asian nodosaurids named before this, Zhongyuansaurus and Liaoningosaurus, have now been re-classified as ankylosaurids. At the time of its description this makes Zhejiangosaurus the … Read more
In Depth After Mymoorapelta in 1994, Gargoyleosaurus was the second ankylosaur to be named from the Morrison Formation. Specifically Gargoyleosaurus is a polacanthine dinosaur and had an arrangement of bony armour and spikes across its back and sides. Gargoyleosaurus also had a large bony plate that covered its hips from above. This armour was an … Read more
In Depth Tianzhenosaurus is a genus of relatively small ankylosaurid dinosaur that lived in China during the late Cretaceous, though a specific point of time during the late Cretaceous is unavailable at the time of writing. There has however been speculation that Tianzhenosaurus may actually be synonymous with the genus Saichania. Further Reading - A … Read more
In Depth Today Cryptosaurus is considered to be a genus of ankylosaur, though because it is only known by a partial femur the genus is considered dubious because it would be almost impossible to assign further remains to the genus. When first described by Harry Govier Seeley, Cryptosaurus was thought to have been a relative … Read more
In Depth The name Tsagantegia means ‘of Tsagen-Teg’ which can be further translated to Englishto mean ‘of White Mountain’, and this is a reference to the location where the holotype skull of Tsagantegia was first discovered. Tsagantegia is currently represented by a single skull, the features of which clearly identify Tsagantegia as an ankylosaurid dinosaur. … Read more
In Depth At the time of its description, Mymoorapelta was the first Jurassic aged ankylosaur to be discovered in North America. Since this description however, other have questioned exactly what kind of ankylosaur Mymoorapelta was. Mymoorapelta does not have a tail club like ankylosaurids, meaning that it was more likely a nodosaur. The original describers … Read more