Acrophyseter is a genus of primitive Sperm Whale that lived in South America during the Miocene epoch. It had a huge skull and its jaws were curved upwards. This probably meant that it hunted prey from below. Within its mouth, large conical teeth were present which it used to catch prey and shear flesh. Possible prey species were smaller whales and dolphins, fish and maybe even birds. Acrophyseter may have hunted in small pods for better coordination.
The genus of Acrophyseter contains two species and both lived during the Miocene epoch of Peru (South America). It was a fairly small species of whale and could grow up to 4.3 meters in length and weighted about 1.200 kg. Acrophyseter deinodon differed from A. robustus by having a less pointed snout and curved teeth.
Lambert, Bianucci, & Muizon, 2008