Troodon formosus
species · Leidy 1856 · accepted · extinct
55 fossil sites · 8 formations · 3 countries
Lived when
Cretaceous – Paleogene
83.6–66 million years ago
Found where
3 countries
8 rock formations
Fossil record
55 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 formosus was named in 1856 (Leidy 1856) — 170 years ago.
- Fossils have been recorded in 3 countries and 8 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).