Tamura, M. (1970). The hinge structure of Trigonioides, with description of Trigonioides mifunensis, sp. nov. from Upper Cretaceous Mifune Group, Kumamoto Pref., Japan. Memoirs of the Faculty of Education of Kumamoto University. Section 1, Natural Science. 18: 38-53.
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Tamura, M.
1970
The hinge structure of <em>Trigonioides</em>, with description of <em>Trigonioides mifunensis</em>, sp. nov. from Upper Cretaceous Mifune Group, Kumamoto Pref., Japan
Memoirs of the Faculty of Education of Kumamoto University. Section 1, Natural Science