Full reference: W. H. Flower. 1867. Description of the skeleton of Inia geoffrensis and the skull of Pontoporia blainvillii, with remarks on the systematic position of these animals in the Order Cetacea. Transactions of the Zoological Society of London 6:87-116
Parent taxon: Iniidae according to M. A. Cozzuol 2010
See also Abel 1905, Brownell and Herald 1972, Cozzuol 1996, Dal Piaz 1929, Ellerman and Morrisson-Scott 1951, Fraser and Purves 1960, Gill 1871, Ginsburg and Janvier 1971, Hay 1930, Kasuya 1973, McKenna and Bell 1997, Paula Couto 1956, Rovereto 1915, Scheffer and Rice 1963, Simpson 1945, True 1908, Weber 1928 and Zittel 1925
Sister taxa: Goniodelphis, Inia, Ischyrorhynchus, Isoninia, Isthminia, Kwanzacetus, Meherrinia, Plicodontinia mourai, Pontoplanodidae, Saurocetes
Subtaxa: Plicodontinia
Distribution: found only at Sahabi Fauna locality P4A (Miocene of Libya)