Hadrodelphis fossil map
Where fossils of Hadrodelphis 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 | 15.98–3.6 million years ago (Langhian to Zanclean) |
| Periods | Neogene |
| Named by | Kellogg 1966 |
| Fossil records | 22 occurrences at 9 locations (PBDB) |
| Found in | United States, France, Costa Rica |
| Rock formations | Calvert, txn:NF, Peace River, Curré, Eastover |
About Hadrodelphis
Hadrodelphis is an extinct genus of dolphin once assigned to the paraphyletic/polyphyletic family Kentriodontidae. Remains have been found in the middle Miocene (Langhian) Calvert Formation of United States.
Text in “About” is quoted from the Wikipedia article Hadrodelphis (revision 1236768124), 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: Q28723512.
