Table 3 in Pliocene marine mammals from the Whalers Bluff Formation of Portland, Victoria, Australia

Table 3. Measurements of delphinid periotics from the Whalers Bluff Formation and delphinid periotics from the Red Crag, England. Measurements follow methodology of Kasuya (1973). All measurements are in mm.
NMVNMVNMVNMVNMVP218264P218265P218266P204352P218481Standard length of periotic, from tip of anterior process to posterior end ofposterior process, measured on a straight line parallel with cerebral border28.0026.6632.5029.9429.40Thickness of superior process at the level of upper tympanic aperture11.0010.0011.9012.1411.58Width of periotic across pars cochlearis and superior process, at the level ofupper tympanic aperture20.0017.7623.0020.0019.58Least distance between the margins of fundus of internal acoustic meatusand of aperture of aquaeductus vestibuli2.562.161.583.002.50Least distance between the margins of fundus of internal acoustic meatusand of aperture of aquaeductus cochleae3.003.003.141.502.20Length of the posterior bullar facet11.0011.0011.0012.4612.62Antero-posterior diameter of pars cochlearis17.0016.0017.8014.6616.16