Therizinosauria
unranked clade · Russell 1997 · accepted · extinct
50 descendant taxa · 81 fossil sites · 34 formations · 10 countries
Lived when
Jurassic – Paleogene
201.4–66 million years ago
Found where
10 countries
34 rock formations
Fossil record
81 sites
53 catalogued specimens
Inside this group
Immediate children
- Terminal taxon — no children recorded.
Did you know
Facts from the record
- Its fossils span about 135 million years, from 201.4 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.
- Therizinosauria was named in 1997 (Russell 1997) — 29 years ago.
- Fossils have been recorded in 10 countries and 34 named rock formations.
- 53 individual specimens are catalogued in museum collections.
- This group contains 50 named taxa, including 25 species.
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Where next
Data from the Paleobiology Database (CC BY 4.0).