Kekenodon

Kekenodon is an extinct kekenodontid early whale from the Late Oligocene of New Zealand. Measuring long, it was a large raptorial whale which hunted marine mammals and penguins. Although at times classified as a basilosaurid, mysticete, or odontocete, recent work suggests that it represents a phylogenetic intermediate form between Basilosauridae and Neoceti.

Classification

Kekenodon was considered a member of the basilosaurid subfamily Dorudontinae in the classic monograph on Archaeoceti by Kellogg.
"Squalodon" gambierensis from Australia is a close relative of Kekenodon.
Phylogenetic analysis suggests that Kekenodon is the "latest-surviving archaeocete, sister-taxon to the Neoceti."