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Skin impressions are less well known for E. regalis, but some well-preserved examples have been studied, including one which preserves a soft tissue crest or wattle on the head. It is unknown whether such a crest was present on E. annectens , and whether it was an indicator of sexual dimorphism .
The skin would have been drawn into the body cavity by the load of the sediments [34] or due to the escape of the gases. [4] Osborn suggested another scenario in 1911: the animal could have died a natural death, and the carcass would have been exposed to the sun for a longer time in a dry riverbed, unaffected by scavengers.
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 dinos
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]
Edmontosaurus annectens (meaning "connected lizard from Edmonton"), often colloquially and historically known as Anatosaurus (meaning "duck lizard"), is a species of flat-headed saurolophine hadrosaurid dinosaur from the late Maastrichtian age at the very end of the Cretaceous period, in what is now western North America.
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 ...
Dakota (specimen NDGS 2000) is the nickname given to an important Edmontosaurus fossil found in the Hell Creek Formation in North Dakota. It is about 67 million years old, [1] placing it in the Maastrichtian, the last stage of the Cretaceous period. It was about 12 m (40 ft) long and weighed about 7-8 tons. [1] [dubious – discuss]
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 ...