Hasegawa, S.

1 publication

Nojo, Ayumu; Hasegawa, S.; Okasa, H.; Togo, Y.; Suzuki, A.; Matsuda, T. (detail)
1999Interregional lithostratigraphy and biostratigraphy of the Pleistocene Setana Formation, southwestern Hokkaido, Japan.
Jour. Geol. Soc. Japan 105(5): 370-388.
—Discusses a specimen of Hydrodamalis ?gigas 1.2 million years old.