Masataka Yoshida

The first choristoderan record from the Upper Cretaceous of Asia, Tamagawa Formation, Kuji Group, Japan

S. Evans, R. Hirayama, Toshio Takisawa, 2021, Cretaceous Research.

Flower visitor fauna of the narrow endemic lily Lilium rubelum

Y. Hayashi, J. Yokoyama, H. Terashima, 2013 .

First Cretaceous fish fauna from Malaysia

G. Cuny, Y. Teng, R. Hirayama, 2019, Journal of Vertebrate Paleontology.

A New and Noteworthy Hybrid of Viola (Violaceae) from Iwate, Northern Japan: Viola rostrata var. japonica × V. violacea var. makinoi

J. Yokoyama, Shiniti Takeda, Masataka Yoshida, 2016 .

The Rediscovery and Taxonomical Reexamination of the Longirostrine Crocodylian from the Pleistocene of Taiwan

H. Endo, R. Aoki, R. Hirayama, 2018, Paleontological Research.

Morphological and Anatomical Variations in Rheophytic Ecotype of Violet, Viola mandshurica var. ikedaeana (Violaceae)

H. Hayakawa, J. Yokoyama, T. Fukuda, 2013 .