Matapa Boessenecker and Fordyce, 2016 (preoccupied) Matapanui is a genus of eomysticetid baleen whale from the Late Oligocene (early Chattian) Kokoamu Greensand of New Zealand.

Matapanui was originally named Matapa, but that name was already in use for a genus of butterfly, necessitating the name change.

[1][2] Based on the enlarged temporal fossae and enlarged mandibular canal, Matapanui was probably incapable of lunge-feeding, although it remains unclear whether it could skim-feed or filter prey in the benthic zone.

Waharoa shared its habitat with the odontocetes Awamokoa, Austrosqualodon, Otekaikea, and Waipatia, and the mysticetes Horopeta, Mauicetus, Tohoraata, Tokarahia, Waharoa, and Whakakai.