Lophorhothon

In Depth        Lophorhothon was first discovered in the US state of Alabama in the Mooreville Chalk Formation.‭ ‬During the Cretaceous,‭ ‬this area was known as a region of Appalachia‭ (‬the eastern landmass of North America at the time separated from Laramidia in the West‭)‬,‭ ‬and what is significant about this is that when Lophorhothon was … Read more

Bolong

In Depth        Bolong is a genus of hadrosauroid dinosaur that lived in what is now China during the Early Cretaceous.‭ ‬The holotype individual is known from a partial skull and jaws,‭ ‬but a second specimen of a juvenile shows more of the post cranial skeleton. Further Reading – Bolong yixianensis gen.‭ ‬et sp.‭ ‬nov.:‭ ‬A … Read more

Tanius

In Depth        Tanius is one of the many known Asian hadrosauroid dinosaurs,‭ ‬but one that is not very well represented.‭ ‬The initial description was based upon the back of the skull which seems to be that of a flat headed hadrosauroid dinosaur,‭ ‬the kind roughly between the earlier iguanodonts and the more advanced hadrosaurids.‭ ‬However … Read more

Mandschurosaurus

In Depth        Mandschurosaurus is registered as a genus of hadrosaur that lived in what is now China during the late Cretaceous.‭ ‬Unfortunately the first individual ever found for this genus is so poorly preserved that most palaeontologists today regard the genus as a nomen dubium due to the difficulty of assigning further remains to the … Read more

Kritosaurus

In Depth        Kritosaurus was first described in‭ ‬1910‭ ‬upon a description of a partial skull that was not only incomplete but partially eroded.‭ ‬To fill in the gaps,‭ ‬Brown used a second skull that would later be referred to Anatotitan to complete the reconstruction.‭ ‬Not all the fragments were used,‭ ‬and the final reconstruction was … Read more

Claosaurus

In Depth        First named as a species of Hadrosaurus by Othniel Charles Marsh in‭ ‬1872,‭ ‬Marsh later renamed this species as a distinct genus,‭ ‬Claosaurus in‭ ‬1890.‭ ‬A second species,‭ ‬C.‭ ‬affinis,‭ ‬is now considered to be highly dubious,‭ ‬not only upon the grounds that‭ ‬it was based upon very fragmentary toe bones,‭ ‬but that … Read more

Batyrosaurus

In Depth        Batyrosaurus has been described as a basal hadrosauroid,‭ ‬the group of ornithopod dinosaurs that would give rise to the more derived hadrosaurids such as Edmontosaurus and Saurolophus towards the late Cretaceous.‭ ‬Compared to other hadrosauroids,‭ ‬the describers considered Batyrosaurus to be more advanced than Altirhinus,‭ ‬but more primitive than Probactrosaurus.        In life Batyrosaurus … Read more

Jinzhousaurus

In Depth        Jinzhousaurus is a genus of hadrosauroid dinosaur that lived in China during the early Cretaceous.‭ ‬With an estimated length of about seven meters,‭ ‬Jinzhousaurus was a medium to large sized hadrosauroid dinosaur,‭ ‬and is noted for having a skull that grew out to a substantial width at the back,‭ ‬while a small crest … Read more

Glishades

In Depth        Glishades is a genus of hadrosauroid dinosaur that lived in North America during the late Cretaceous.‭ ‬Since a paper was published suggesting that Glishades is actually an indeterminate juvenile‭ (‬Campione et al,‭ ‬2012‭)‬,‭ ‬the genus has become widely regarded as a nomen dubium. Further Reading -‭ ‬Glishades ericksoni,‭ ‬a new hadrosauroid‭ (‬Dinosauria:‭ ‬Ornithopoda‭) … Read more