Saurolophus (NEW SPECIES) 1.9 Cretaceous Predators Update

Saurolophus is a genus of large hadrosaurid dinosaur from the Late Cretaceous period of Asia and North America, that lived in what is now the Horseshoe Canyon and Nemegt formations about 70 million to 66 million years ago. Saurolophus is known from material including nearly complete skeletons, giving researchers a clear picture of its bony anatomy. S. osborni, the rarer Albertan species, was around 8. 2–8. 5 m (27–28 ft) long, with its skull 1. 0 m (3. 3 ft) long. It has been estimated to have weighed around 3 tonnes (3. 0 long tons; 3. 3 short tons). S. angustirostris, the Mongolian species, was larger; it got as large as 13 m (43 ft) in length, and larger remains are reported. It has been estimated to have potentially weighed up to 11 tonnes (11 long tons; 12 short tons). The largest known skull of S.angustirostris measures 1. 22 m (4. 0 ft) in length. Aside from size, the two species are virtually identical, with differentiation hindered by lack of study.