Tribe
Valid Extinct

Saurornithoidini

Rivera-Sylva et al. 2026

No Wikipedia summary available.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
11
Group
Dinosaures
Carnivore, omnivore Ground dwelling Terrestrial
Saurornithoidini
click to enlarge
Collection of four troodontids, clockwise from top left: Mei long, unnamed Alaskan troodontid, Jianianhualong tengi, Sinovenator changii. © File:Mei Long.jpg (Bruce McAdam) File:Alaskan_troodont.jpg (bryan... from Taipei, Taiwan) File:Sinovenator-Tianjin Natural History Museum.jpg (Jonathan Chen) File:Jianianhualong tengi holotype fossil.jpg (Xing Xu, Philip Currie, Michael Pittman, Lida Xing · CC BY 4.0 · Wikimedia
PBDB ↗
Classification
Dinosauria Unranked clade
›
Theropoda Unranked clade
›
Neotheropoda Unranked clade
›
Averostra Unranked clade
›
Tetanurae Unranked clade
›
Coelurosauria Unranked clade
›
Maniraptora Unranked clade
›
Paraves Unranked clade
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Deinonychosauria Infraorder
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Troodontidae Family
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Troodontinae Subfamily
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Saurornithoidini Tribe
Fossil sites 11 geolocated sites
Distribution
Top countries
🇲🇳 Mongolia
5
🇺🇸 United States
4
🇺🇿 Uzbekistan
1
🇨🇳 China
1
Geological formations
Nemegt
3
Djadokhta
2
Hell Creek
2
Khodzhakul
1
Bayan Mandahu
1
Kaiparowits
1
Lance
1
Temporal distribution
Maastrichtian (72.2–66 Ma)
6
Campanian (83.6–72.2 Ma)
4
Cenomanian (100.5–93.9 Ma)
1
Images 1
Bibliography
Original description
H. E. Rivera-Sylva, M. C. Aguillón-Martinez, and J. Flores-Ventura, I. E. Sánchez-Uribe, J. R. Guzman-Gutierrez, N. R. Longrich. 2026. A thick-skulled troodontid theropod from the Late Cretaceous of Mexico. Diversity 18(1):38:1-26 DOI ↗
Bibliography (10)
L. E. Zanno, D. J. Varricchio, and P. M. O.'Connor, A. L. Titus, M. J. Knell. 2011. A new troodontid theropod, Talos sampsoni gen. et sp. nov., from the Upper Cretaceous Western Interior Basin of North America. PLoS ONE 6(9):e24487:1-20 DOI ↗
M. A. Norell and S. H. Hwang. 2004. A troodontid dinosaur from Ukhaa Tolgod (Late Cretaceous Mongolia). American Museum Novitates 3446:1-9 DOI ↗
M. Watabe and S. Suzuki. 2000. Report on the Japan–Mongolia Joint Paleontological Expedition to the Gobi desert, 1997. Hayashibara Museum of Natural Sciences Research Bulletin 1:69-82
P. J. Currie and J.-H. Peng. 1994. A juvenile specimen of Saurornithoides mongoliensis from the Upper Cretaceous of northern China. Canadian Journal of Earth Sciences 30(10-11):2224-2230 DOI ↗
L. A. Nessov. 1981. Amfibii i reptilii v ekosistemakh Mela sredney Azii [Amphibia and reptiles in Cretaceous ecosystems of central Asia]. The Problems of Herpetology. Fifth Herpetological Conference. Abstracts
H. Osmolska. 1981. Coossified tarsometatarsi in theropod dinosaurs and their bearing on the problem of bird origins. Palaeontologica Polonica 42:79-95
R. Barsbold. 1974. Saurornithoididae, a new family of small theropod dinosaurs from Central Asia and North America. Palaeontologia Polonica 30:5-22
M. T. Greenwald. 1971. The Lower Vertebrates of the Hell Creek Formation, Harding County, South Dakota.
R. Estes. 1964. Fossil vertebrates from the Late Cretaceous Lance Formation, eastern Wyoming. University of California Publications in Geological Sciences 49:1-187
H. F. Osborn. 1924. Three new Theropoda, Protoceratops zone, central Mongolia. American Museum Novitates 144:1-12