Masataka Izukura

Taxonomic Relationships and Paleoecological Significance of Two Exceptionally Large Lower Jaws of Late Cretaceous Ammonoids from Japan

K. Tanabe, K. Moriya, A. Misaki, 2019, Paleontological Research.

The earliest Cenomanian ammonoid Tanabeceras yezoense (Shigeta) from the Hobetsu area, Hokkaido

Y. Shigeta, Masataka Izukura, 2013 .

Discovery of the Heteromorph Ammonoid Amapondella amapondense in the Middle Campanian of Hokkaido, Japan

Y. Shigeta, Masataka Izukura, 2022, Paleontological Research.

Gaudryceras izumiense Matsumoto and Morozumi, a Maastrichtian Ammonoid from Hokkaido and Alaska and Its Biostratigraphic Implications

K. Tanabe, Y. Shigeta, Masataka Izukura, 2010 .

An early Maastrichtian (latest Cretaceous) ammonoid fauna from the Soya Hill area, Hokkaido, northern Japan

Y. Tsutsumi, Y. Shigeta, Masataka Izukura, 2017 .

Middle and Late Campanian (Late Cretaceous) Ammonoids from the Urakawa Area, Hokkaido, Northern Japan

T. Nishimura, Y. Tsutsumi, Y. Shigeta, 2016, Paleontological Research.

Systematic Position and Origin of the Cretaceous Ammonoid Genus Takahashia

R. Hoffmann, Y. Shigeta, Masataka Izukura, 2010 .