Dilophodelphis fossil map
Where fossils of Dilophodelphis have been found, shown on the Earth as it looked about 15 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 15 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 | 20.45–15.98 million years ago (Burdigalian) |
| Periods | Neogene |
| Family | Platanistidae |
| Named by | Boersma et al. 2017 |
| Fossil records | 2 occurrences at 1 locations (PBDB) |
| Found in | United States |
| Rock formations | Astoria |
About Dilophodelphis
Dilophodelphis is an extinct genus of river dolphin from Early Miocene (Burdigalian) marine deposits in Oregon. The type species, Dilophodelphis fordycei, was named in 2017.
Text in “About” is quoted from the Wikipedia article Dilophodelphis (revision 1193903535), 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: Q55609599.