FIGURE 1. 1 in A new skull of the fossil porpoise Numataphocoena yamashitai (Cetacea: Phocoenidae) from the upper part of the Horokaoshirarika Formation (lower Pliocene), Numata Town, Hokkaido, Japan, and its phylogenetic position

FIGURE 1. 1, Locality maps, 2, stratigraphic sections of the locality based on previous studies which are mentioned in the text. This figure is modified from Tanaka (2016).