The type species, Waipatia maerewhenua is known from a single skull found near 45° SouthinOtago.[2] The second species, W. hectori, was originally named Microcetus hectori in 1935, but later recognized as distinct from Microcetus.[3][4]"Uncamentodon" was informally coined for M. hectori in a table by Rothausen in a 1970 paper, but the lack of a diagnosis or description made it a nomen nudum. Finally in 2015, M. hectori was recognized as a second species of Waipatia based on preparation of additional material included in the holotype.[5]
^Benham,W. B. (1935). "The teeth of an extinct whale, Microcetus hectori n. sp." Transactions of the Royal Society of New Zealand, 65:239-243.
^Rothausen, K. (1961). "Ueber Microcetus, einen kleinen Squalodontiden aus dem Oberoligozaen". Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen 112(1):106-116.
^Tanaka, Y. and R. E. Fordyce (2015). "Historically significant late Oligocene dolphin Microcetus hectori Benham 1935: a new species of Waipatia (Platanistoidea)". Journal of the Royal Society of New Zealand.
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