Andrewsornis fossil map
Where fossils of Andrewsornis have been found, shown on the Earth as it looked about 30 million years ago and on today’s map.
Dots are fossil collections recorded in the Paleobiology Database. The “then” view moves today’s fossil sites back to their positions 30 million years ago (the time slice nearest the median age of the fossils) using the Merdith et al. (2021) plate model; positions are approximate. Open on the timeline map →

| Group | Prehistoric birds |
|---|---|
| Lived | 29–21 million years ago (Rupelian to Aquitanian) |
| Periods | Paleogene, Neogene |
| Family | Phorusrhacidae |
| Named by | Patterson 1941 |
| Fossil records | 3 occurrences at 3 locations (PBDB) |
| Found in | Argentina |
| Rock formations | Sarmiento, Agua de la Piedra |
About Andrewsornis
Andrewsornis is an extinct genus of giant flightless predatory birds of the family Phorusrhacidae or "terror birds" that lived in Oligocene Argentina. Fossils have been found in the Sarmiento Formation, and possibly the Agua de la Piedra Formation.
Text in “About” is quoted from the Wikipedia article Andrewsornis (revision 1373295702), licensed under CC BY-SA 4.0; introduction excerpted verbatim, formatting removed. Ages, family, authority and fossil records: Paleobiology Database, accessed 23 October 2026. Ages are those of the rock layers the fossils were found in. Wikidata: Q2324017.