Hudiesaurus Facts
Pronunciation: HUE-dee-SORE-us
Name meaning: Butterfly Lizard
| Diet | Herbivore |
| Height | 4m |
| Length | 15m |
| Weight | 12 tonnes |
| Environment | Land |
| Era | Jurassic |
| Period | Late Jurassic |
| Type | Sauropod |
| Location | China |
Hudiesaurus sinojapanorum is a poorly understood sauropod dinosaur that lived in what is now western China during the Late Jurassic period, approximately 154 to 143 million years ago. This massive herbivore was first described by Chinese palaeontologist Dong Zhiming in 1997, based on fossils discovered during the Sino-Japanese Silk Road Expedition near Qiketai in Xinjiang Province.
As a sauropod, Hudiesaurus would have been a long-necked, quadrupedal giant that fed on plants. It belonged to the mamenchisaurid family, a group of sauropods known for their exceptionally long necks. However, our understanding of Hudiesaurus remains extremely limited due to the fragmentary nature of its fossil remains. The dinosaur was originally described based on a single vertebra that was initially thought to be from the back, but later analysis suggested it was actually one of the last neck vertebrae.
The discovery of Hudiesaurus has been complicated by subsequent research. In 2021, scientists determined that limb bones originally assigned to this species actually belonged to a different sauropod genus called Rhomaleopakhus, whilst teeth from the same locality were reclassified as belonging to an unidentified sauropod. This means that Hudiesaurus is now known from even less material than originally thought.
Living in the lush environments of Late Jurassic China, Hudiesaurus would have shared its habitat with other dinosaurs and early mammals. The Kalaza Formation where it was found suggests a warm, humid climate with abundant plant life to support these enormous herbivores.
What made Hudiesaurus distinctive?
Due to the extremely limited fossil material, no distinctive features of Hudiesaurus can be confidently identified. The single vertebra shows typical mamenchisaurid characteristics but lacks unique distinguishing traits.
Behaviour
Very little can be determined about Hudiesaurus behaviour from the limited fossil evidence. As a sauropod, it would likely have been a peaceful herbivore that moved in herds and used its long neck to browse vegetation at various heights.
Discovery
Hudiesaurus was first described by Dong Zhiming in 1997. The original fossils were discovered at Kalaza Formation, Qiketai, Shanshan, Xinjiang Province, China.
Hudiesaurus FAQ
What did Hudiesaurus eat?
Hudiesaurus was a herbivore that fed on plants. As a sauropod with a long neck, it would have browsed on ferns, conifers, and other vegetation available in
Late Jurassic China, likely feeding at various heights from ground level to treetops.
How big was Hudiesaurus?
Size estimates for Hudiesaurus are highly uncertain due to the limited fossil material. Based on comparisons with related mamenchisaurid sauropods, it may have reached lengths of around 15 metres and weighed approximately 12 tonnes, with a height of about 4 metres at the hip.
When did Hudiesaurus live?
Hudiesaurus lived during the
Late Jurassic period, specifically between the Kimmeridgian and Tithonian stages, approximately 154 to 143 million years ago. This was a time when sauropods were particularly diverse and widespread.
Where was Hudiesaurus found?
Hudiesaurus was discovered in the Kalaza Formation near Qiketai in Shanshan County, Xinjiang Province, western China. The fossils were found during the Sino-Japanese Silk Road Expedition in the 1990s.
How do you pronounce Hudiesaurus?
Hudiesaurus is pronounced 'HUE-dee-SORE-us'. The name combines the Chinese word 'hudie' meaning butterfly with the Greek suffix 'saurus' meaning lizard.
What does Hudiesaurus mean?
Hudiesaurus means 'Butterfly Lizard'. The name comes from the Chinese word 'hudie' for butterfly, though the reason for choosing this name is not clear from the scientific description.
How fast could Hudiesaurus run?
The speed of Hudiesaurus is unknown due to limited fossil evidence. However, like other large sauropods, it was likely a slow-moving animal that walked at speeds of perhaps 5-10 km/h, with its massive size making rapid movement unnecessary.
What type of dinosaur was Hudiesaurus?
Hudiesaurus was a sauropod dinosaur, specifically a member of the mamenchisaurid family. Sauropods were large, long-necked, quadrupedal herbivores that were among the largest land animals ever to exist.
Was Hudiesaurus related to birds?
Hudiesaurus was not closely related to birds. As a sauropod, it belonged to a different major group of dinosaurs than the theropods from which birds evolved. However, all dinosaurs, including sauropods, share common ancestry with modern birds.
How many Hudiesaurus fossils have been found?
Very few fossils of Hudiesaurus have been found. The species is currently known from just a single neck vertebra, making it one of the most poorly known dinosaur genera. Other bones originally assigned to it have since been reclassified as belonging to different species.
