dusky dolphin
The Dusky Dolphin (Lagenorhynchus obscurus) is a highly gregarious and acrobatic dolphin found in coastal waters in the Southern Hemisphere. It was first identified by John Edward Gray in 1828. It is very closely genetically related to the Pacific White-sided Dolphin, but current scientific consensus is that they are distinct species.
Though the Dusky and Pacific White-sided Dolphins are traditionally placed in the genus Lagenorhynchus, recent molecular analyses indicate that they are more closely related to the dolphins of the genus Cephalorhynchus. If true, this would mean that these two species must either be transferred to Cephalorhynchus or be given a new genus of their own.
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