Sister Taxa

• Aetiocetus
  Aetiocetus
  Aetiocetus is an extinct genus of baleen whale that lived 25 million years ago, in the Oligocene period. Its fossils have been found in the North Pacific, around Oregon. It was first named by Douglas Emlong in 1966 and currently contains four species, A cotylalveus, A. polydentatus, A. tomitai,...
  
  
• Chonecetus
  Chonecetus
  Chonecetus is an extinct genus of Neocene Aetiocetidae that lived in the Oligocene period. Its fossils have been found in Canada, in the northeast Pacific. It was first named by L.S. Russell in 1968, and contains two species, C. sookensis and C. goedertorum...
  
  
• Morawanocetus
  Morawanocetus
  Morawanocetus is an extinct genus of Aetiocetidae from the Oligocene period. Its fossils have been found in the North Pacific. It was first named by Barnes et al. in 1995, and contains one species, M. yabukii...
  
  
• Willungacetus
  Willungacetus
  Willungacetus is an extinct genus of Aetiocetidae which existed during the Oligocene period. Its fossils have been found in Australia. It was first named by Pledge in 2005, though he had discovered it at Port Willunga in 2001, and contains one species, W. aldingensis...
  
  

Sources

• The Rise of Placental Mammals By Kenneth David Rose and J. David Archibald ISBN 080188022X
• paleodb.org