Troodon
genus · Leidy 1856 · accepted · extinct
1 descendant taxa · 103 fossil sites · 15 formations · 4 countries
Lived when
Cretaceous – Paleogene
83.6–66 million years ago
Found where
4 countries
15 rock formations
Fossil record
103 sites
6 catalogued specimens
Inside this group
Immediate children
- Terminal taxon — no children recorded.
Did you know
Facts from the record
- Its fossils span about 18 million years, from 83.6 to 66 million years ago.
- The youngest known fossil is around 66 million years old — that is roughly 220 times further back than the whole of human history.
- Troodon was named in 1856 (Leidy 1856) — 170 years ago.
- Fossils have been recorded in 4 countries and 15 named rock formations.
- 6 individual specimens are catalogued in museum collections.
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Where next
Data from the Paleobiology Database (CC BY 4.0).