Chungkingosaurus Facts
Pronunciation: CHUNG-king-oh-SORE-us
Name meaning: Chongqing Lizard
| Diet | Herbivore |
| Height | 2m |
| Length | 4m |
| Weight | 1 tonnes |
| Environment | Land |
| Era | Jurassic |
| Period | Middle Jurassic |
| Type | Stegosaur |
| Location | China |
Chungkingosaurus was a medium-sized stegosaur that roamed the lush landscapes of what is now China during the Middle Jurassic period, approximately 168 million years ago. This armoured herbivore was considerably smaller than its famous cousin Stegosaurus, measuring about 4 metres in length and standing roughly 2 metres tall at the hip.
Like other stegosaurs, Chungkingosaurus possessed the characteristic double row of plates and spikes running along its back and tail. However, its plates were relatively small and narrow compared to later stegosaurs, suggesting it represents an earlier stage in stegosaur evolution. The tail ended in formidable spikes, likely used for defence against predators such as the carnivorous dinosaurs that shared its environment.
As a herbivore, Chungkingosaurus fed on low-growing plants, ferns, and cycads that flourished in the warm, humid climate of Middle Jurassic China. Its small head housed a tiny brain, and its beak-like mouth was perfectly adapted for cropping vegetation. The dinosaur's front legs were shorter than its back legs, giving it a distinctive sloped posture that helped it reach ground-level plants.
Chungkingosaurus is particularly important to palaeontologists as one of the earliest well-known stegosaurs, providing valuable insights into how this distinctive group of armoured dinosaurs evolved and spread across the ancient world.
What made Chungkingosaurus distinctive?
Chungkingosaurus had a double row of relatively small, narrow plates running along its back, smaller than those of later stegosaurs. It possessed four tail spikes and had a distinctively sloped body profile with shorter front legs than back legs.
Behaviour
Chungkingosaurus likely lived in small herds, browsing on low-growing vegetation in the forested environments of Middle Jurassic China. When threatened, it probably used its spiked tail as a defensive weapon whilst relying on its body armour for protection.
Discovery
Chungkingosaurus was first described by Dong Zhiming, Li Xuanmin and Zhou Shiwu in 1977. The original fossils were discovered at Upper Shaximiao Formation, Sichuan Province, China.
Chungkingosaurus FAQ
What did Chungkingosaurus eat?
Chungkingosaurus was a herbivore that fed on low-growing plants, ferns, cycads, and other vegetation. It used its beak-like mouth to crop plants and had simple teeth for basic plant processing before swallowing.
How big was Chungkingosaurus?
Chungkingosaurus was about 4 metres long, 2 metres tall at the hip, and weighed approximately 1 tonne. This made it one of the smaller stegosaurs, considerably more compact than the later
Stegosaurus.
When did Chungkingosaurus live?
Chungkingosaurus lived during the
Middle Jurassic period, approximately 168.2 million years ago. This makes it one of the earlier known stegosaurs, predating the famous
Stegosaurus by about 15 million years.
Where was Chungkingosaurus found?
Chungkingosaurus fossils were discovered in the Upper Shaximiao Formation in Sichuan Province, China, near the city of Chongqing. This region has yielded many important dinosaur discoveries from the Jurassic period.
How do you pronounce Chungkingosaurus?
Chungkingosaurus is pronounced 'CHUNG-king-oh-SORE-us'. The name comes from the old romanisation of Chongqing (Chungking) plus the Greek word 'saurus' meaning lizard.
What does Chungkingosaurus mean?
Chungkingosaurus means 'Chongqing lizard', named after the major Chinese city near where the fossils were discovered. The full species name, Chungkingosaurus jiangbeiensis, also references the Jiangbei district.
How fast could Chungkingosaurus run?
The running speed of Chungkingosaurus is unknown, but as a heavily built quadruped with shorter front legs, it was likely not built for speed. It probably moved at a steady walking pace and relied on its armour and tail spikes for defence rather than fleeing from predators.
What type of dinosaur was Chungkingosaurus?
Chungkingosaurus was a stegosaur, part of the family Stegosauridae. These were heavily armoured, plant-eating dinosaurs characterised by their distinctive back plates and spiked tails.
Was Chungkingosaurus related to birds?
No, Chungkingosaurus was not closely related to birds. As a stegosaur, it belonged to the Ornithischia group of dinosaurs, whilst birds evolved from theropod dinosaurs in the Saurischia group. These two groups split very early in dinosaur evolution.
How many Chungkingosaurus fossils have been found?
The exact number of Chungkingosaurus specimens is not well documented, but the fossil record includes skeletal remains that have allowed scientists to understand its basic anatomy and relationship to other stegosaurs. More complete specimens would help fill gaps in our knowledge of this early stegosaur.
