Orcininae is a contested subfamily of oceanic dolphins composed of 1 living and 3 extinct genera. It may be superseded by Delphinidae. Its only extant member is the orca; all other extant genera forme

Orcinus citoniensis is an extinct species of orca identified in the Late Pliocene of Italy and the Early Pleistocene of England. It was smaller than the modern killer whale, 4 m versus 7 to 10 m, and