Pachycephalosauria
suborder · (Maryańska and Osmólska 1974) · accepted · extinct
51 descendant taxa · 176 fossil sites · 29 formations · 5 countries
Lived when
Cretaceous – Paleogene
119.57–66 million years ago
Found where
5 countries
29 rock formations
Fossil record
176 sites
18 catalogued specimens
Inside this group
Immediate children
- Terminal taxon — no children recorded.
Did you know
Facts from the record
- Its fossils span about 54 million years, from 119.57 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.
- Pachycephalosauria was named in 1974 ((Maryańska and Osmólska 1974)) — 52 years ago.
- Fossils have been recorded in 5 countries and 29 named rock formations.
- 18 individual specimens are catalogued in museum collections.
- This group contains 51 named taxa, including 22 species.
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Where next
Data from the Paleobiology Database (CC BY 4.0).