Figure 25 in Herpetocetus morrowi (Cetacea: Mysticeti), a new species of diminutive baleen whale from the Upper Pliocene (Piacenzian) of California, USA, with observations on the evolution and relationships of the Cetotheriidae

Figure 25. Herpetocetus morrowi sp. nov., UCMP 124950, right holotype tympanic bulla. A, dorsal view; B, ventral view; C, lateral view; D, medial view; E, anterior view; F, posterior view. Abbreviations: A, anterior; CP, conical process; D, dorsal; EO, Eustachian opening; INV, involucrum; IR, involucral ridge; L, lateral; LF, lateral furrow; M, medial; MF, median furrow; MR, main ridge; P, posterior; SF, sigmoid fissure; SP, sigmoid process; V, ventral. Scale bar = 1 cm.