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Illustration. First described in 1973, [3] Shantungosaurus is known from over five incomplete skeletons. Chinese scientist Xing Xu and his colleagues indicate that Shantungosaurus is very similar to and shares many unique characters with Edmontosaurus, forming a node of an Edmontosaurus–Shantungosaurus clade between North America and Asia, based on the new materials recovered in Shandong.
Two specimens still under study in the collection of the Museum of the Rockies - a 7.5 m (25 ft) tail labelled as MOR 1142 and another labelled as MOR 1609 - indicate that Edmontosaurus annectens could have grown to much larger sizes and reach nearly 15 metres (49 ft) in length, [49] [50] similar to the closesly related Shantungosaurus which ...
Restoration. Barsboldia was a large hadrosaur, previously estimated at 10 metres (33 ft) in length and 5 metric tons (5.5 short tons) in body mass. [2] In 2011, the tibial length was measured at 1.4 m (4.6 ft), rivaling that of Shantungosaurus at 1.47 m (4.8 ft) and that of Magnapaulia at 1.36 m (4.5 ft); this indicates that Barsboldia could have possibly reached within the range of 12–14 ...
The very largest known ornithopods, like Shantungosaurus were as heavy as medium-sized sauropods at up to 23 t (25 short tons), [453] [454] and 16.6 m (54 ft) in length. [453] Magnapaulia reached 12.5 m (41 ft) in length, [455] or, according to original description, even 15 m (49 ft).
Three ornithopods for which brain endocasts had previously been produced – Camptosaurus, Iguanodon, and Anatosaurus (now known as Edmontosaurus annectens [17]) – were investigated. It was found that they had relatively high EQs compared to many other dinosaurs (ranging from 0.8 to 1.5), comparable to that of carnosaurian theropods and of ...
Instead, other sites in the American West would come to provide many very complete specimens that would form the backbone of hadrosaur research. One such specimen was the very complete AMNH 5060 (belonging to Edmontosaurus annectens), recovered in 1908 by the fossil collector Charles Hazelius Sternberg and his three sons in Converse County ...
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Barsboldia Canardia Edmontosaurus regalis Edmontosaurus annectens Gryposaurus Kamuysaurus Kritosaurus Olorotitan Pararhabdodon Rhabdodon priscus Riabininohadros Sahaliyania Saurolophus angustirostris Shantungosaurus Trinisaura Tsintaosaurus Zalmoxes robustus (above) and Zalmoxes shqiperorum (below) †Amurosaurus †Amurosaurus riabinini; 70-66 Ma