A new basal coelurosaur (Dinosauria: Theropoda) from the Middle Jurassic of Siberia
Open accessAbstract
Kileskus aristotocus gen. et sp. nov. from the Middle Jurassic (Bathonian) Itat Formation at Berezovsk Quarry, Krasnoyarsk Territory (West Siberia, Russia), is based on an associated maxilla and premaxilla, a mandible fragment, and some possible associated postcranial elements. Kileskus gen. nov. is referred together with the Middle Jurassic Proceratosaurus from England and the Late Jurassic Guanlong from China to Proceratosauridae fam. nov. (Tyrannosauroidea, Coelurosauria) which is characterized by sagittal nasal crest (unknown for Kileskus gen. nov.), enlarged external nares, short ventral margin of premaxilla, and depth of the antorbital fossa ventral to the antorbital fenestra that is much greater than the depth of the maxilla below the ventral margin of the antorbital fossa. Kileskus gen. nov. is more similar to Proceratosaurus than to Guanlong in having anterodorsal process of the premaxilla inclined slightly anterodorsally and nares inclined posterodorsally, but differs from these two genera by having ascending process of the maxilla confluent with anterior rim of maxillary body and gently sloping posterodorsally. Kileskus gen. nov. has a basal position within the Proceratosauridae. Dilong from the Early Cretaceous of China with a parasagittal nasal crests is the sister taxon for the Proceratosauridae. The new taxon is one of the oldest members of Coelurosauria and Tyrannosauroidea in the fossil record.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
Oldest certain records of coelurosaurs are Bathonian from Europe and central Asia.
“the oldest certain records of coelurosaurs are Bathonian in age and come from Europe [49] and central Asia [50].”
From Re-evaluation of the Haarlem Archaeopteryx and the radiation of maniraptoran theropod dinosaurs (2017) · cites this paper as [50]
Cites
The earliest dromaeosaurid theropod from South America
Makovicky, P. J., Apesteguía, S., & Agnolín, F. L. (2005) · Nature · doi:10.1038/nature03996 · Cited by 273 · see citing works
A new ornithomimid dinosaur with gregarious habits from the Late Cretaceous of China
Kobayashi, Y., & Lü, J.-C. (2003) · Zenodo · doi:10.5281/zenodo.13315375 · Cited by 149 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Re-evaluation of the Haarlem Archaeopteryx and the radiation of maniraptoran theropod dinosaurs
Foth, C., & Rauhut, O. W. M. (2017) · BMC Evolutionary Biology · doi:10.1186/s12862-017-1076-y · Cited by 56 · see citing works
“On the other hand, the oldest certain records of coelurosaurs are Bathonian in age and come from Europe [49] and central Asia [50].”
- Authors
- Averianov, A. O., Krasnolutskii, S. A., & Ivantsov, S. V.
- Affiliations
- Zoological Institute (RU)
- Sharypovo Regional Museum, 2nd microrayon 10, Sharypovo, 662311 Krasnoyarsk Territory, Russia
- National Research Tomsk State University (RU)
- Venue
- Proceedings of the Zoological Institute RAS
- Published
- 2010-03-25
- Volume
- 314
- Issue
- 1
- Pages
- 42-57
- ISSN
- 0206-0477 (ISSN-L)
- OpenAlex
- W2740747050
- Cited by
- 44
- References
- 2
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 3 · 2023: 4 · 2022: 4 · 2021: 2 · 2020: 1 · 2019: 5 · 2018: 1 · 2017: 2 · 2016: 3 · 2015: 1 · 2014: 2 · 2013: 4 · 2012: 4
- FWCI
- 2.47
- Type
- journal article
- Language
- ru
- Open access
- bronze
- doi.org
- Locations
- Proceedings of the Zoological Institute RAS (publishedVersion)
- Funders
- Smithsonian Institution
- Saint Petersburg State University
- National Museum of Natural History
- Topics
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Evolutionary Biology
- Physical Sciences › Earth and Planetary Sciences › Paleontology › Evolution and Paleontology Studies
- Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Fossil Insects in Amber
- Keywords
- Tyrannosauroidea, Coelurosauria, theropod dinosaurs, new genus and species, Middle Jurassic, Bathonian, maxilla, premaxilla, mandible, phylogenetic relationships, Western Siberia
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
