Morosaurus Facts
| Diet | Herbivore |
| Height | 4.5m |
| Length | 18m |
| Weight | 20 tonnes |
| Speed | 15 km/h |
| Environment | Land |
| Era | Jurassic |
| Period | Late Jurassic |
| Type | Sauropod |
| Location | North America |

| Diet | Herbivore |
| Height | 4.5m |
| Length | 18m |
| Weight | 20 tonnes |
| Speed | 15 km/h |
| Environment | Land |
| Era | Jurassic |
| Period | Late Jurassic |
| Type | Sauropod |
| Location | North America |
Morosaurus was originally named in 1878 by palaeontologist Othniel Charles Marsh, but is now recognised as being the same dinosaur as Camarasaurus. This massive sauropod roamed North America during the Late Jurassic period, between 161.5 and 149.2 million years ago, making it one of the most successful long-necked dinosaurs of its time.
Standing about 4.5 metres tall at the hip and stretching up to 18 metres in length, this sauropod was a truly impressive sight. It possessed the characteristic long neck and tail of its group, along with four sturdy, column-like legs that supported its estimated 20-tonne body weight. Its relatively compact neck, compared to other sauropods, was perfectly adapted for feeding on vegetation at medium heights.
As a herbivore, Morosaurus used its pencil-like teeth to strip leaves and soft plant material from trees and ferns. Its powerful jaw muscles and robust skull allowed it to process tough Jurassic vegetation efficiently. The dinosaur's digestive system would have included a large gut to break down the enormous quantities of plant matter it consumed daily.
Living in the semi-arid floodplains of what is now the western United States, Morosaurus shared its habitat with other famous dinosaurs including Allosaurus, Stegosaurus, and Diplodocus. Its fossils are among the most complete sauropod remains ever discovered, providing invaluable insights into sauropod biology and behaviour.
Morosaurus had a relatively short, robust neck compared to other sauropods, with distinctive hollow chambers in its vertebrae. Its skull was particularly well-built with strong jaws and spoon-shaped teeth perfect for processing vegetation.
Morosaurus likely lived in small herds, moving slowly across the Jurassic landscape in search of suitable feeding areas. These sauropods probably engaged in neck-wrestling behaviour during mating displays, using their powerful necks as weapons against rivals.
Morosaurus was first described by Othniel Charles Marsh in 1878. The original fossils were discovered at Morrison Formation, Colorado, USA.