Shidaisaurus Facts
Pronunciation: SHEE-die-SORE-us
Name meaning: Jin-Shidai Lizard
| Diet | Carnivore |
| Height | 2.5m |
| Length | 7m |
| Weight | 1.5 tonnes |
| Environment | Land |
| Era | Jurassic |
| Period | Middle Jurassic |
| Type | Theropod |
| Location | China |
Shidaisaurus was a fearsome theropod dinosaur that stalked the landscapes of what is now China during the Middle Jurassic period, approximately 171 million years ago. This predatory dinosaur belonged to the group of hunters that dominated the Jurassic ecosystems, using powerful jaws and sharp teeth to capture prey.
Living in the lush, warm environments of ancient Yunnan Province, Shidaisaurus would have encountered a diverse array of other dinosaurs and prehistoric creatures. The Middle Jurassic was a time of incredible biodiversity, with vast fern prairies and coniferous forests providing habitat for numerous species. As a medium-sized theropod, Shidaisaurus likely occupied an important role as both predator and scavenger in its ecosystem.
The discovery of Shidaisaurus provides valuable insights into theropod evolution during the Middle Jurassic. Its fossils were found alongside eight other dinosaur individuals, suggesting this location may have been a prehistoric gathering site or perhaps the result of a mass mortality event. The incomplete nature of the remains means that much about this dinosaur's exact appearance and behaviour remains mysterious, making it an intriguing subject for ongoing palaeontological research.
What made Shidaisaurus distinctive?
Shidaisaurus possessed the typical features of Middle Jurassic theropods, including powerful hind limbs built for pursuit hunting and sharp, serrated teeth designed for slicing flesh. As a member of the metriacanthosaurid group, it likely had a relatively large skull compared to its body size and strong jaw muscles for delivering powerful bites.
Behaviour
Shidaisaurus was likely an active predator that hunted other dinosaurs and smaller vertebrates in its Middle Jurassic ecosystem. The discovery of multiple dinosaur individuals at the same site suggests these animals may have gathered in groups, possibly around water sources or during seasonal migrations.
Discovery
Shidaisaurus was first described by Wu and colleagues in 2009. The original fossils were discovered at Chuanjie Formation, Yunnan Province, China.
Shidaisaurus FAQ
What did Shidaisaurus eat?
Shidaisaurus was a carnivore that hunted other animals for food. As a theropod dinosaur, it would have used its sharp teeth and powerful jaws to catch and consume other dinosaurs, early mammals, fish, and any other meat it could find in its
Middle Jurassic environment.
How big was Shidaisaurus?
Shidaisaurus was a medium-sized theropod, estimated to have been around 7 metres long and 2.5 metres tall at the hip, weighing approximately 1.5 tonnes. However, these estimates are based on incomplete remains, so its exact size remains somewhat uncertain.
When did Shidaisaurus live?
Shidaisaurus lived during the
Middle Jurassic period, approximately 170.9 million years ago. This was a time when dinosaurs were diversifying rapidly and the climate was generally warm and humid worldwide.
Where was Shidaisaurus found?
Shidaisaurus was discovered in China, specifically in the Chuanjie Formation in Yunnan Province. The fossil was found near what became known as Jurassic World Park, in rocks dating to the early
Middle Jurassic period.
How do you pronounce Shidaisaurus?
Shidaisaurus is pronounced 'SHEE-die-SORE-us'. The name combines elements referring to the Jin-Shidai Company with the Greek word 'saurus' meaning lizard.
What does Shidaisaurus mean?
Shidaisaurus means 'Jin-Shidai Lizard'. Both the genus name and species name (jinae) together honour the Jin-Shidai Company that oversaw the excavation and inspection work at the site where this dinosaur was discovered.
How fast could Shidaisaurus run?
The running speed of Shidaisaurus is unknown, as the fossil remains lack most of the limb bones that would help scientists estimate its locomotion abilities. However, as a theropod predator, it was likely capable of reasonably fast pursuit of prey.
What type of dinosaur was Shidaisaurus?
Shidaisaurus was a theropod dinosaur, specifically a member of the Metriacanthosauridae family. Theropods were the group of primarily carnivorous, bipedal dinosaurs that included famous predators and eventually gave rise to modern birds.
Was Shidaisaurus related to birds?
Yes, as a theropod dinosaur, Shidaisaurus was part of the evolutionary lineage that eventually led to modern birds. All theropods, including Shidaisaurus, share common ancestry with birds, though Shidaisaurus itself lived much earlier than the first known birds.
How many Shidaisaurus fossils have been found?
Only one specimen of Shidaisaurus is currently known to science - the holotype designated DML-LCA 9701-IV. This partial skeleton was found among an assemblage of nine dinosaur individuals, but the other specimens appear to represent different species.
