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Unlike many other hadrosaurids, Edmontosaurus lacked a bony crest. It may have had soft-tissue display structures in the skull, though: the bones around the nasal openings had deep indentations surrounding the openings, and this pair of recesses are postulated to have held inflatable air sacs, perhaps allowing for both visual and auditory ...
Edmontosaurus regalis is a species of comb-crested hadrosaurid dinosaur. Fossils of E. regalis have been found in rocks of western North America that date from the late Campanian age of the Cretaceous Period 73 million years ago, but it may have possibly lived into the early Maastrichtian. [1]
The Edmontosaurus mummy SMF R 4036 is an exceptionally well-preserved dinosaur fossil in the collection of the Naturmuseum Senckenberg (SM) in Frankfurt am Main, Germany. Found in 1910 in Wyoming , United States, it is ascribed to the species Edmontosaurus annectens (originally Trachodon ), a member of the Hadrosauridae ("duckbilled dinosaur").
The mummy in bottom view, with outline drawing. AMNH 5060 is considered one of the best preserved dinosaur fossils ever discovered. [11] The scientific value of the mummy lies in its exceptionally high degree of preservation, the articulation of the bones in their original anatomical position, and the extensive skin impressions enveloping the specimen.
In 1977 James Hopson introduced the use of estimated encephalization quotients to the topic of dinosaur intelligence, finding Edmontosaurus to have an EQ of 1.5, above that of other ornithischians including earlier relatives like Camptosaurus and Iguanodon and similar to that of carnosaurian theropods and modern crocodilians but below that of ...
In western North America during the twilight of the dinosaur age, the unquestioned ruler was Tyrannosaurus rex, one of the largest terrestrial predators in Earth's history. Researchers have ...
A lambeosaurine hadrosaur that has a tall, hollow rounded crest similar to Corythosaurus. The animal is estimated to have been around 9.1 m (30 ft) long, and to have weighed up to 4.0 tonnes (4.4 tons). †Kamuysaurus †Kamuysaurus japonicus; 72.4-70.6 Ma Hakobucho Formation, Mukawa, Hokkaido, Japan: An Edmontosaurini Saurolophine †Kerberosaurus
In 1832, Jonathan the Seychelles giant tortoise (Aldabrachelys gigantea hololissa) was born. Although his exact birthdate is unknown, he has been given the official birthday of December 4, 1832.