Table 2 in Pliocene marine mammals from the Whalers Bluff Formation of Portland, Victoria, Australia

Table 2. Measurements of tympanics of Physeteridae and Kogiidae. Measurements follow methodology of Kasuya (1973). All measurements are in mm.
NMV C24972NMV P218407USNM 22953USNM 183007USNM 452993USNM 183008USNM 251118Standard length of tympanic bulla, distance from anterior tip to posterior end of outer posterior prominence26.0–31.042–29.031Distance from anterior tip to posterior end of inner posterior prominence19.921.627.0382831.028Distance from posteroventral tip of outer posterior prominence to tip of sigmoid process21.28––––––Distance from posteroventral tip of outer posterior prominence to tip of conical process15.3––––––Width of tympanic bulla at the level of the sigmoid process26.0––––––Height of tympanic bulla, from tip of sigmoid process to ventral keel26.5––––––Width across inner and outer posterior prominences19.0–20.224–22.520+