Classification
Dinosauria
Unranked clade
›
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
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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
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Troodon
Genus
Fossil sites 103 geolocated sites
Distribution
Top countries
Geological formations
Temporal distribution
Maastrichtian
(72.2–66 Ma)
32
Campanian
(83.6–72.2 Ma)
71
Species (1)
Troodon formosus
84 Ma
Synonyms (1)
Polyodontosaurus
subjective synonym of Troodon
Images 3
Bibliography
Original description
J. Leidy. 1856. Notices of remains of extinct reptiles and fishes, discovered by Dr. F. V. Hayden in the bad lands of the Judith River, Nebraska Territory. Proceedings of the Academy of Natural Sciences of Philadelphia 8:72-73
Bibliography (44)
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