Pomatodelphis belongs to the platanistid subfamily Pomatodelphininae, which is distinguished from the
South Asian river dolphin in having a flattened rostrum, a transversely expanded posterior end of the premaxilla, an eye and bony orbit of normal size (not atrophied), and nasal bones not reduced in size but wide transversely. A close relative of
Pomatodelphis is
Prepomatodelphis from marine deposits in Austria. Three species are known,
P. inaequalis,
P. bobengi, and
P. stenorhynchus. == Fossil distribution ==