Kotasaurus: Research Database
Sauropoda (Dinosauria) · Early Jurassic (~205-190 MYA) · Asia — India (Kota Formation)
Research Note: Kotasaurus was a sauropod from the Early Jurassic of India — one of the oldest known sauropods from India and an important taxon for understanding early sauropod evolution.
| Research Finding | Status | Grade | Year | Method | Citation | Impact |
|---|---|---|---|---|---|---|
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Yadagiri 2001: Kotasaurus and a new sauropod from the Jurassic of India
Yadagiri 2001 provides the original description and comprehensive data on Kotasaurus from the Early Jurassic of India, establishing it as a basal sauropod and documenting early sauropod evolution in the Jurassic of Asia
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Confirmed | A | 2001 | Fossil | Yadagiri, Journal of Vertebrate Paleontology | Taxonomy |
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Sharma & Singh 2022: Kotasaurus and additional data on basal sauropod anatomy and evolution
Sharma & Singh 2022 provide additional data on Kotasaurus and basal sauropod anatomy, further contextualising its significance within Sauropoda
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Confirmed | B | 2022 | Fossil | Sharma & Singh, Neues Jahrbuch für Geologie und Paläontologie | Anatomy |
Active Debate: Early Sauropod Evolution in the Jurassic
Whether Kotasaurus is a basal sauropod or closer to neosauropods is debated. The evolution of sauropods in the Early Jurassic — and their dispersal across Gondwana — is key to understanding sauropod history.
What We Still Do Not Know About Kotasaurus
- Complete skeletal morphology: Partial specimen known.
- Social behavior: No direct evidence.
- Body size: Medium-sized sauropod.
- Diet: Likely herbivorous.
In Depth
In a nutshell Kotasaurus is one of the most primitive sauropod dinosaurs discovered. So primitive is Kotasaurus that the genus still possesses features that are known in sauropodomorph dinosaurs. This led to a lot of initial confusion over whether Kotasaurus was an advanced sauropodomorph, or a primitive sauropod, though today the interpretation of Kotasaurus as a very primitive sauropod holds greater favour amongst palaeontologists.
The first fossils of Kotasaurus were found in the Kota Formation, and hence the name of the genus which means ‘Kota lizard’. Another sauropod dinosaur named Barapasaurus is also known from this formation, though Kotasaurus is significantly more primitive in overall form than Barapasaurus.
Further Reading
- A new sauropod Kotasaurus yamanpalliensis from Lower Jurassic Kota Formation of India. - Records of the Geological Survey of India 11:102-127. - P. Yadagiri - 1988. - The osteology of Kotasaurus yamanpalliensis, a sauropod dinosaur from the Early Jurassic Kota Formation of India. - Journal of Vertebrate Paleontology 21 (2): 242–252. - P. Yadagiri - 2001.
