Ashoroa fossil map
Where fossils of Ashoroa 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 | Early mammals |
|---|---|
| Lived | 27.3–23.04 million years ago (Chattian) |
| Periods | Paleogene |
| Family | Desmostylidae |
| Named by | Inuzuka 2000 |
| Fossil records | 2 occurrences at 1 locations (PBDB) |
| Found in | Japan |
| Rock formations | Morawan |
About Ashoroa
Ashoroa (named after its type locality Ashoro, Hokkaido) is an extinct genus of desmostylian, aquatic, herbivorous mammal. Fossils of Ashoroa have been found in the Morawan Formation on Hokkaido, Japan (43.3°N 143.8°E / 43.3; 143.8, paleocoordinates 44.6°N 141.4°E / 44.6; 141.4) and were dated to the late Oligocene.
Text in “About” is quoted from the Wikipedia article Ashoroa (revision 1314274997), 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: Q18601751.
