original description
Maeda, S. (1963). <em>Trigonioides</em> from the Late Mesozoic Tetori Group, central Japan. <em>Transactions and Proceedings of the Palaeontological Society of Japan, new series.</em> 51: 79-85., available online at https://doi.org/10.14825/prpsj1951.1963.51_79
page(s): 83-85, pl. 12, figs 10-16 [details] Available for editors [request]
additional source
Ma, Q.-H. (1989). Evolution, classification of Trigonioidacea (Bivalvia) in and its distribution in China. In: Palaeontological Society of China, Chinese Petroleum Society, Nanjing Institute of Geology and Palaeontology, et al. (eds) Selected Papers for Symposium on Cretaceous of South China. Nanjing, Nanjing University Press, pp. 249-294.
page(s): 268-269, pl. 7, fig. 13 [details] Available for editors [request]
source of synonymy
Koarai, K.; Matsukawa, M. (2016). Late Mesozoic bivalves of the Tetori Group, Japan. <em>Bulletin of Tokyo Gakugei University, Division of Natural Sciences.</em> 68: 91-190.
page(s): 160 [details] Available for editors [request]
From editor or global species database
Type locality "A point on the right bank of the Nakanomata River, north of Sugiyatma, Kitadani Village, Fukui Prefecture" (Honshu, Japan) [details]