Spheroolithidae
family · Zhao 1979 · accepted · extinct
15 descendant taxa · 83 fossil sites · 34 formations · 11 countries
Lived when
Cretaceous – Paleogene
139.1–66 million years ago
Found where
11 countries
34 rock formations
Fossil record
83 sites
0 catalogued specimens
Inside this group
Immediate children
- Terminal taxon — no children recorded.
Did you know
Facts from the record
- Its fossils span about 73 million years, from 139.1 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.
- Spheroolithidae was named in 1979 (Zhao 1979) — 47 years ago.
- Fossils have been recorded in 11 countries and 34 named rock formations.
- This group contains 15 named taxa, including 12 species.
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Where next
Data from the Paleobiology Database (CC BY 4.0).