Pachycephalosauridae
family · Sternberg 1945 · accepted · extinct
28 descendant taxa · 79 fossil sites · 22 formations · 5 countries
Lived when
Cretaceous – Paleogene
100.5–66 million years ago
Found where
5 countries
22 rock formations
Fossil record
79 sites
2 catalogued specimens
Inside this group
Immediate children
- Terminal taxon — no children recorded.
Did you know
Facts from the record
- Its fossils span about 35 million years, from 100.5 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.
- Pachycephalosauridae was named in 1945 (Sternberg 1945) — 81 years ago.
- Fossils have been recorded in 5 countries and 22 named rock formations.
- 2 individual specimens are catalogued in museum collections.
- This group contains 28 named taxa, including 14 species.
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Where next
Data from the Paleobiology Database (CC BY 4.0).