Therizinosauroidea
superfamily · Russell and Dong 1994 · accepted · extinct
39 descendant taxa · 71 fossil sites · 31 formations · 10 countries
Lived when
Jurassic – Paleogene
201.4–66 million years ago
Found where
10 countries
31 rock formations
Fossil record
71 sites
46 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.
- Therizinosauroidea was named in 1994 (Russell and Dong 1994) — 32 years ago.
- Fossils have been recorded in 10 countries and 31 named rock formations.
- 46 individual specimens are catalogued in museum collections.
- This group contains 39 named taxa, including 20 species.
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Where next
Data from the Paleobiology Database (CC BY 4.0).