Some Aspects on an Asymmetry of Nasal Bones in Toothed Whales

The arrangement of cranial bones in cetaceans in both Odontoceti and Mysticeti has evolved to enable better adaptation to aquatic habitats, and as a result, cetacean skulls differ from those of terrestrial mammals. Their unique skull morphology has been studied to the extent that it is now known Odontoceti have unusual asymmet­ ric cranial bone structures, whereas Mysticeti have sym­ metric structures similar to other mammals (Miller 1923). Ness...