Traits taxon details
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): 81-83, pl. 12, figs 1-9 [details] Available for editors 
basis of record
Kozai, T.; Ishida, K.; Hirsch, F.; Park, S.-O.; Chang, K.-H. (2005). Early Cretaceous non-marine mollusc faunas of Japan and Korea. <em>Cretaceous Research.</em> 26(1): 97-112., available online at https://doi.org/10.1016/j.cretres.2004.11.003 [details] Available for editors 
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