Allosaurus
genus · Marsh 1877 · accepted · extinct
7 descendant taxa · 147 fossil sites · 4 formations · 4 countries
Lived when
Jurassic – Cretaceous
161.5–137.05 million years ago
Found where
4 countries
4 rock formations
Fossil record
147 sites
31 catalogued specimens
Inside this group
Immediate children
- Terminal taxon — no children recorded.
Did you know
Facts from the record
- Its fossils span about 24 million years, from 161.5 to 137.05 million years ago.
- The youngest known fossil is around 137.05 million years old — that is roughly 457 times further back than the whole of human history.
- Allosaurus was named in 1877 (Marsh 1877) — 149 years ago.
- Fossils have been recorded in 4 countries and 4 named rock formations.
- 31 individual specimens are catalogued in museum collections.
- This group contains 7 named taxa, including 7 species.
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Where next
Data from the Paleobiology Database (CC BY 4.0).