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- Publications
- Influence
A tooth of Fukuiraptor aff. F. kitadaniensis from the Lower Cretaceous Sebayashi Formation, Sanchu Cretaceous, Japan
- R. Molnar, Ikuwo Obata, M. Tanimoto, M. Matsukawa
- Geology
- 2009
A theropod tooth from Early Cretaceous Sebayashi Formation of the Sanchu Cretaceous in Kanna Town, Japan exhibits low crenulations (or wrinkles) of the enamel along the mesial margin apically on one… Expand
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- 3
Supplementary description of the ammonoids from the Barremian to the Albian of the Choshi Peninsula, Japan
- Ikuwo Obata, M. Matsukawa
- Geology
- 1 February 2009
Abstract Seven Barremian ammonoid species and two Aptian species from the Choshi Group, Japan, are described here. Among the Barremian forms, new species of Holcodiscus and Pulchellia are proposed.… Expand
Early Cretaceous terrestrial ecosystems in East Asia based on food-web and energy-flow models
- M. Matsukawa, K. Saiki, +5 authors Kenichiro Shibata
- Geology
- 1 April 2006
In recent years, there has been global interest in the environments and ecosystems around the world. It is helpful to reconstruct past environments and ecosystems to help understand them in the… Expand
New record of a pterosaur from the Late Cretaceous Izumi Group, Awaji Island, Hyogo Prefecture, Japan
- Ikuwo Obata, Kenichiro Shibata, M. Matsukawa
- Geology
- 2007
- 2
- 1
A New Species Of Taniwhasaurus (Mosasauridae, Tylosaurinae) From The Upper Santonian-Lower Campanian (Upper Cretaceous) Of Hokkaido, Japan
- M. W. Caldwell, T. Konishi, Ikuwo Obata, Kikuwo Muramoto
- Geology
- 12 June 2008
Abstract A new species of the basal tylosaurine mosasaur Taniwhasaurus, is described from materials collected from upper Santonian-lower Campanian marine clastics outcropping near Mikasa City, Island… Expand
Barremian–Aptian (Early Cretaceous) ammonoids from the Choshi Group, Honshu (Japan)
- Ikuwo Obata, M. Matsukawa
- Geology
- 1 June 2007
So far, our knowledge of Barremian and Aptian ammonoid faunas from Japan has been insufficient to allow global correlation and palaeogeographic interpretation. We describe here 11 species of… Expand
Restudy of Crioceratites ishiwarai, an early Cretaceous ammonoid from the Oshima Formation, Kesennuma, Miyagi Prefecture, Japan
- Ikuwo Obata, M. Matsukawa
- Geology
- 2009
A large hamulinid ammonoid from the lower Cretaceous arida formation, Wakayama Prefecture, Japan
- Ikuwo Obata, Yoshiro. Morozumi, T. Bessho
- Geology
- 2008
- 1
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