Chuxiongosaurus in Yunnan

Chuxiongosaurus is a genus of basal sauropodomorph dinosaur which lived during the Early Jurassic Period. Fossils of this genus have been found in the Lower Lufeng Formation, Yunnan Province, southern China. Identified from the holotype CMY LT9401 a nearly complete skull (including a lower jaw) with some similarities to Thecodontosaurus, it was described as the “first basal sauropod dinosaur from the Early Jurassic of China,” more basal than Anchisaurus. It was named by Lü Junchang, Yoshitsugu Kobayashi, Li Tianguang and Zhong Shimin in 2010, and the type species is Chuxiongosaurus lufengensis.

Chuxiongosaurus is a notable genus of dinosaur found in Yunnan Province, China. Here’s an overview of Chuxiongosaurus:

Discovery and Naming

  • Discovery: Fossils of Chuxiongosaurus were discovered in Yunnan Province, specifically in the Lower Jurassic rock formations.
  • Naming: The genus Chuxiongosaurus was named after Chuxiong City in Yunnan, where the fossils were found.

Physical Characteristics

  • Classification: Chuxiongosaurus is classified as a genus of sauropod dinosaur, specifically belonging to the family Cetiosauridae.
  • Size: It was a medium-sized sauropod, estimated to have reached lengths of around 12 meters (39 feet).

Habitat and Paleoenvironment

  • Habitat: During the Early Jurassic period, Yunnan Province was characterized by a warm and humid climate, with lush vegetation that provided a suitable habitat for herbivorous dinosaurs like Chuxiongosaurus.
  • Fossil Sites: Fossils of Chuxiongosaurus have been found in various locations within Yunnan, contributing to our understanding of the dinosaur fauna in this region during that time.


  • Contribution to Paleontology: Chuxiongosaurus fossils have provided important insights into the diversity and evolution of sauropod dinosaurs in Asia during the Early Jurassic period.
  • Research and Study: Study of Chuxiongosaurus helps paleontologists piece together the evolutionary history of sauropods and their adaptations to different environments.

Fossil Sites in Yunnan

  • Yunnan Province is known for several fossil sites, including those where Chuxiongosaurus fossils have been unearthed. These sites contribute significantly to the field of paleontology, offering a glimpse into ancient ecosystems and the dinosaurs that inhabited them.

Chuxiongosaurus remains an important genus for understanding the early evolution of sauropod dinosaurs in Asia, particularly in Yunnan Province, where its fossils have been integral to paleontological research.