Ferskil tusken ferzjes fan "Evenhoevigen"

L
L (→‎Skiftopbou: oanf + red)
****** famylje ''[[Raoellidae]]'' †
****** {{Stambeam2/ein tûke}}tuskenskift [[walfiskeftigen]] (''Cetacea'')
******* lytsskift [[baleinwalfiskenbleinwalfisken]] (''Mysticeti'' of ''Mystacoceti''): 15 soarten
******** famylje [[dwerchwalfisken]] (''Cetotheriidae'')
******** famylje [[echte walfisken]] (''Balaenidae'')