Alcoidae
superfamily · Stejneger 1885 · accepted · extant
89 descendant taxa · 545 fossil sites · 37 formations · 28 countries
Lived when
Paleogene – Quaternary
56–0 million years ago
Found where
28 countries
37 rock formations
Fossil record
545 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 56 million years, from 56 to 0 million years ago.
- The youngest known fossil is around 0 million years old — that is roughly 0 times further back than the whole of human history.
- Alcoidae was named in 1885 (Stejneger 1885) — 141 years ago.
- Fossils have been recorded in 28 countries and 37 named rock formations.
- This group contains 89 named taxa, including 63 species.
- This group is not extinct — living birds belong inside it.
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Where next
Data from the Paleobiology Database (CC BY 4.0).