Tribe
Valid Extinct

Troodontini

Rivera-Sylva et al. 2026

No Wikipedia summary available.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
27
Group
Dinosaures
Carnivore, omnivore Ground dwelling Terrestrial
Troodontini
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
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Theropoda Unranked clade
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Neotheropoda Unranked clade
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Averostra Unranked clade
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Tetanurae Unranked clade
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Coelurosauria Unranked clade
›
Maniraptora Unranked clade
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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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Troodontini Tribe
Fossil sites 27 geolocated sites
Distribution
Top countries
🇨🇦 Canada
20
🇺🇸 United States
5
🇲🇽 Mexico
2
Geological formations
Dinosaur Park
10
Oldman
6
Horseshoe Canyon
4
Kirtland
3
Cerro del Pueblo
2
Lance
2
Temporal distribution
Maastrichtian (72.2–66 Ma)
5
Campanian (83.6–72.2 Ma)
22
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)
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 ↗
G. F. Funston and P. J. Currie. 2018. The first record of dinosaur eggshell from the Horseshoe Canyon Formation (Maastrichtian) of Alberta, Canada. Canadian Journal of Earth Sciences 55(4):436-441 DOI ↗
D. C. Evans, T. M. Cullen, and D. W. Larson, A. Rego. 2017. A new species of troodontid theropod (Dinosauria: Maniraptora) from the Horseshoe Canyon Formation (Maastrichtian) of Alberta, Canada. Canadian Journal of Earth Sciences 54(8):813-826 DOI ↗
A. J. van der Reest and P. J. Currie. 2017. Troodontids (Theropoda) from the Dinosaur Park Formation, Alberta, with a description of a unique new taxon: implications for deinonychosaur diversity in North America . Canadian Journal of Earth Sciences 54:919-935 DOI ↗
R. M. Sullivan. 2006. Saurornitholestes robustus, n. sp. (Theropoda: Dromaeosauridae) from the Upper Cretaceous Kirtland Formation (De-na-zin Member), San Juan Basin, New Mexico. Late Cretaceous Vertebrates from the Western Interior. New Mexico Museum of Natural History and Science Bulletin 35:253-256
P. J. Currie. 2005. History of research. Dinosaur Provincial Park: A Spectacular Ancient Ecosystem Revealed. Indiana University Press, Bloomington
P. J. Currie. 1985. Cranial anatomy of Stenonychosaurus inequalis (Saurischia, Theropoda) and its bearing on the origin of birds. Canadian Journal of Earth Sciences 22(11):1643-1658 DOI ↗
K. Carpenter. 1982. Baby dinosaurs from the Late Cretaceous Lance and Hell Creek formations and a description of a new species of theropod. Contributions to Geology, University of Wyoming 20(2):123-134
J. S. McIntosh. 1981. Annotated catalogue of the dinosaurs (Reptilia, Archosauria) in the collections of the Carnegie Museum of Natural History. Bulletin of Carnegie Museum of Natural History 18:1-67 DOI ↗
C. M. Sternberg. 1932. Two new theropod dinosaurs from the Belly River Formation of Alberta. Canadian Field-Naturalist 46(5):99-105 DOI ↗