Lagenorhynchus is a genus in the order cetacea containing six closely related species:

• the White-beaked Dolphin, Lagenorhynchus albirostris
• the Atlantic White-sided Dolphin, Lagenorhynchus acutus
• the Pacific White-sided Dolphin, Lagenorhynchus obliquidens
• the Dusky Dolphin, Lagenorhynchus obscurus
• the Black-chinned Dolphin, Lagenorhynchus australis
• the Hourglass Dolphin, Lagenorhynchus cruciger

The name Lagenorhynchus derives from the Greek lagenos meaning bottle and rhynchus meaning beak. Indeed the "bottle-nose" is a characteristic of this genus. However the dolphins that have attained the common name Bottlenose Dolphin belong in the genus Tursiops. The Melon-headed whale was once classified in this genus but was later removed to its own Peponocephala genus.

For further details, please see the articles on each species.

Toothed whales

Kurzschnauzendelfine | Lagenorhynchus | カマイルカ属