Eupachycephalosauria
unranked clade · Dieudonné et al. 2020 · accepted · extinct
9 descendant taxa · 88 fossil sites · 14 formations · 3 countries
Lived when
Cretaceous – Paleogene
83.6–66 million years ago
Found where
3 countries
14 rock formations
Fossil record
88 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.
- Eupachycephalosauria was named in 2020 (Dieudonné et al. 2020) — 6 years ago.
- Fossils have been recorded in 3 countries and 14 named rock formations.
- 6 individual specimens are catalogued in museum collections.
- This group contains 9 named taxa, including 5 species.
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Where next
Data from the Paleobiology Database (CC BY 4.0).