- Animals
- ›Chordates
- ›Vertebrates
- ›Mammals
- ›Therians
- ›Placental Mammals
- ›Ungulates, Carnivorans, and Allies
- ›Even-toed Ungulates and Cetaceans
- ›Cetaceans and Hippopotamuses
- ›Cetaceans
- ›Toothed Whales
- ›Oceanic Dolphins and Porpoises
- ›Oceanic Dolphins
- ›Right Whale Dolphins and allies

Aethalodelphis
Aethalodelphis is a genus of dolphins that was erected in 2025. The Pacific white-sided dolphin (Aethalodelphis obliquidens) and dusky dolphin (Aethalodelphis obscurus) are the only members of the genus. These species were formerly included in the genus Lagenorhynchus, but several studies demonstrated that Lagenorhynchus as previously constituted was polyphyletic. As a result, in 2025 the Pacific white-sided dolphin and dusky dolphin were reclassified into the new genus Aethalodelphis.
2 branches of this genus, most-observed first · about 2 known species

Pacific White-sided Dolphin
speciesAethalodelphis obliquidens

Dusky Dolphin
speciesAethalodelphis obscurus
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Aethalodelphis in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 1664970.