Turanoceratops: Research Database
Ceratopsidae (Ornithischia) · Late Cretaceous (~90-85 MYA) · Asia — Uzbekistan (Bissekty Formation)
Research Note: Turanoceratops was a ceratopsid dinosaur from the Late Cretaceous of Uzbekistan — one of the few known ceratopsids from Asia and an important taxon for understanding ceratopsid evolution and biogeography.
| Research Finding | Status | Grade | Year | Method | Citation | Impact |
|---|---|---|---|---|---|---|
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Sues & Averianov 2009: Turanoceratops and new data on ceratopsid dinosaurs from the Cretaceous of Asia
Sues & Averianov 2009 provide comprehensive data on Turanoceratops from the Late Cretaceous of Uzbekistan, establishing it as a ceratopsid and documenting ceratopsid diversity in the Cretaceous of Asia
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Confirmed | A | 2009 | Fossil | Sues & Averianov, Naturwissenschaften | Taxonomy |
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Farke & Sampson 2009: Turanoceratops and additional data on ceratopsid systematics and biogeography
Farke & Sampson 2009 provide additional data on Turanoceratops and ceratopsid systematics, further contextualising its significance within Ceratopsidae
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Confirmed | B | 2009 | Fossil | Farke & Sampson, Naturwissenschaften | Systematics |
Active Debate: Ceratopsid Biogeography and the Asia-North America Connection
Whether ceratopsids like Turanoceratops were endemic to Asia or part of a broader Asian-North American dinosaur fauna is debated. The biogeographic history of ceratopsids — and faunal exchange between Asia and North America — is key to understanding ceratopsid evolution.
What We Still Do Not Know About Turanoceratops
- Complete skeletal morphology: Partial specimen known.
- Diet: Likely herbivorous.
- Social behavior: No direct evidence.
- Frill: Partial frill known.
In Depth
There is some confusion about Turanoceratops, given that we know that it was a ceratopsian dinosaur, but not all palaeontologists agree upon exactly what kind. Papers published by Sues and Averianov in 2009 support the idea that Turanoceratops was a transitional form that linked primitive ceratopsians of the Ceratopsoidea, with the more advanced ceratopsids (think Triceratops, Styracosaurus, etc). If correct then this would make Turanoceratops the first ceratopsid ceratopsian dinosaur known from Asia.
A counter publication by Farke et al (also published in 2009), was of the opinion that Turanoceratops was not a transitional form, but instead actually represented a sister group of ceratopsian dinosaurs, more distinct that primitive forms, yet distinct from ceratopsids. A second paper by Sues and Averimov refuted this, saying that the authors of the other paper were misidentifying the features seen on the Turanoceratops fossils. Then in 2010 a fourth paper was published by Xu et al which was of the opinion that Turanoceratops was more advanced than Zuniceratops (a genus that represents the earliest known appearance of a horned dinosaur in North America), yet was not advanced enough to be included within the Ceratopsidae.
Classification issues aside, Turanoceratops was typical of early quadrupedal ceratopsian dinosaurs and at two meters long of a fairly small size. When compared to other genera, Turanoceratops is often credited as being similar to the aforementioned Zuniceratops. Turanoceratops would have lived in an ecosystem that also saw the presence of dinosaurs such as hadrosaurs, ankylosaurs, oviraptosaurs, ornithomimosaurs, troodonts and dromaeosaurs as well as other Mesozoic reptiles such as azhdarchid pterosaurs.
Further Reading
- [Mesozoic ceratopsian dinosaurs and crocodiles of central Asia]. In Bogdanova and Khozatskii (eds.), Theoretical and Applied Aspects of Modern Palaeontology 144-154. - L. A. Nessov, L. F. Kaznyshkina & G. O. Cherepanov - 1989. - Turanoceratops tardabilis—the first ceratopsid dinosaur from Asia. - Naturwissenschaften. - H. -D. Sues & A. Averianov - 2009. - Turanoceratops tardabilis—sister taxon, but not a ceratopsid. - Naturwissenschaften. A. Farke, S. D. Sampson, C. A. Forster & M. A. Lowen - 2009. - Phylogenetic position of Turanoceratops (Dinosauria: Ceratopsia). - Naturwissenschaften. - H. D. Sues & A. Averianov - 2009. - First ceratopsid dinosaur from China and its biogeographical implications. - Chinese Science Bulletin 55(16):1631-1635 - X. Xu, K. -B Wang & D. -J. Li - 2010.
