Cetacea; Platanistidae-freshwater dolphins

[Christian Beetz]

Dear Reader !


We are a group of students working on a biogeographical project about the
Cetacean family Platanistidae, the freshwater dolphins.

-Could anybody help us with a phylogeny of the members of this group?

-Is there anything known about closer relationships with other cetacean
families?

-Has there been any work done on the surprisingly restricted distribution
pattern (South America, Asia) of all family members? If yes, by whome?


Thank you for your time and help.
Miguel, Christer, Matthias, Christian.