Copepteryx fossil map
Where fossils of Copepteryx 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 | 27.3–23.04 million years ago (Chattian) |
| Periods | Paleogene |
| Family | Plotopteridae |
| Named by | Olson and Hasegawa 1996 |
| Fossil records | 7 occurrences at 6 locations (PBDB) |
| Found in | Japan |
| Rock formations | Ainoshima, Yamaga, Waita, Asagai Sandstone, txn:39682 |
About Copepteryx
Copepteryx is an extinct genus of flightless bird of the family Plotopteridae, endemic to Japan during the Oligocene living from 28.4 to 23 mya, meaning it existed for approximately 5.4 million years.
Text in “About” is quoted from the Wikipedia article Copepteryx (revision 1380576649), 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: Q5168512.