Monolophosaurus Facts
Pronunciation: MON-oh-loaf-oh-SORE-us
Name meaning: Single Crest Lizard
| Diet | Carnivore |
| Height | 2m |
| Length | 5.5m |
| Weight | 475 kg |
| Environment | Land |
| Era | Jurassic |
| Period | Middle Jurassic |
| Type | Theropod |
| Location | China |
Monolophosaurus was a distinctive theropod dinosaur that lived during the Middle Jurassic period, approximately 165 million years ago. This medium-sized predator inhabited what is now the Xinjiang region of China, roaming the ancient landscapes of the Shishugou Formation. Named for its most striking feature—a prominent single crest that ran along the top of its skull—Monolophosaurus stands out amongst theropod dinosaurs for this unusual ornamentation.
Measuring about 5.5 metres in length and weighing approximately 475 kilograms, Monolophosaurus was neither the largest nor smallest theropod of its time, but occupied an important ecological niche as a mid-sized predator. Its skull crest was likely hollow and may have been used for display purposes, species recognition, or possibly sound production. The dinosaur possessed the typical theropod body plan with powerful hind legs for running, relatively short arms, and sharp teeth designed for tearing flesh.
As a carnivore, Monolophosaurus would have hunted smaller dinosaurs, early mammals, and other prey available in its Middle Jurassic environment. Its size suggests it could tackle moderately large prey whilst also scavenging when opportunities arose. The discovery of this theropod has provided valuable insights into the diversity of predatory dinosaurs during the Middle Jurassic period, a time when many dinosaur groups were rapidly evolving and diversifying.
What made Monolophosaurus distinctive?
Monolophosaurus was characterised by its prominent single crest running along the top of its skull from the nose to the back of the head. This hollow, bony structure made it easily distinguishable from other theropods of its time and size.
Behaviour
Monolophosaurus likely used its distinctive skull crest for visual displays during courtship or territorial disputes with other members of its species. As a medium-sized predator, it probably hunted both alone and in small groups, targeting prey smaller than itself whilst also scavenging carrion when available.
Discovery
Monolophosaurus was first described by Dong Zhiming in 1984. The original fossils were discovered at Shishugou Formation, Xinjiang, China.
Monolophosaurus FAQ
What did Monolophosaurus eat?
Monolophosaurus was a carnivore that hunted smaller dinosaurs, early mammals, and other animals. Its sharp teeth were perfectly designed for slicing through meat, and it likely both actively hunted prey and scavenged carrion when opportunities arose.
How big was Monolophosaurus?
Monolophosaurus was a medium-sized theropod, measuring about 5.5 metres in length and standing approximately 2 metres tall at the hip. It weighed around 475 kilograms, making it comparable in size to a large crocodile.
When did Monolophosaurus live?
Monolophosaurus lived during the
Middle Jurassic period, approximately 165.3 million years ago. This was a time when dinosaurs were diversifying rapidly and many familiar groups were beginning to evolve.
Where was Monolophosaurus found?
Monolophosaurus fossils were discovered in the Shishugou Formation in Xinjiang, western China. This region has proven to be rich in
Middle Jurassic dinosaur fossils and provides important insights into Asian dinosaur evolution.
How do you pronounce Monolophosaurus?
Monolophosaurus is pronounced 'MON-oh-loaf-oh-SORE-us'. The name breaks down into 'mono' meaning single, 'lopho' meaning crest, and 'saurus' meaning lizard.
What does Monolophosaurus mean?
Monolophosaurus means 'single crest lizard' in Greek. This name refers to the distinctive single bony crest that ran along the top of its skull from nose to the back of the head.
How fast could Monolophosaurus run?
The running speed of Monolophosaurus is not precisely known, but as a medium-sized theropod with powerful leg muscles, it would likely have been capable of reaching considerable speeds when chasing prey or escaping larger predators.
What type of dinosaur was Monolophosaurus?
Monolophosaurus was a theropod dinosaur, belonging to the group of bipedal, primarily carnivorous dinosaurs. Its exact family relationships within the theropod group are still being studied by palaeontologists.
Was Monolophosaurus related to birds?
Yes, as a theropod dinosaur, Monolophosaurus was part of the group that eventually gave rise to modern birds. However, it lived much earlier than the first birds and was not directly ancestral to them.
How many Monolophosaurus fossils have been found?
Monolophosaurus is known primarily from a single well-preserved skull and partial skeleton discovered in the 1980s. Additional fragmentary remains may have been found, but it remains a relatively rare dinosaur in the fossil record.
