FIGURE 4 in Balaenoptera edeni skull from the Holocene (Quaternary) of Osaka City, Japan

FIGURE 4. Frontals, OMNH-QV4816. 1, left in dorsal view. 2 and 3, right in dorsal view. 2, line art. 3, photo. 4 and 5, right in ventral view. 4, photo. 5, line art. 6. right in ventral view. 7 and 8, in right lateral view. 7, photo. 8, line art.