Traits name details
original description
Tamura, M. (1959). On <em>Kumatrigonia</em>, a new subgenus of <em>Frenguelliella</em>, and a <em>Tosapecten</em> from the Carnic Tanoura Formation in Kyushu, Japan. <em>Memoirs of the Faculty of Education, Kumamoto University, Natural Science.</em> 7: 212-218. page(s): 214, text-fig. 4, pl. 2, figs 1-6 [details] Available for editors 
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