Joumocetus shimizui
... that the late Miocene whale Joumocetus shimizui is the third oldest Cetotheriid known?
... that the <a href="./Late_Miocene" id="mwDuo" rel="mw:WikiLink" title="Late Miocene">late Miocene</a> whale <i id="mwDus"><b id="mwDuw"><a href="./Joumocetus" id="mwDu0" rel="mw:WikiLink" title="Joumocetus">Joumocetus shimizui</a></b></i> is the third oldest <a href="./Cetotheriidae" id="mwDu4" rel="mw:WikiLink" title="Cetotheriidae">Cetotheriid</a> known?