original description(ofEndothyra perfida var. crebra Lebedeva, 1954 †)Lebedeva, N. S. (1954). Фораминиферы нижнего карбона Кузнецкого бассейна - Early Carboniferous Foraminifera of the Kuznetsk Basin. <em>Микрофауна СССР - Mikrofauna SSSR, Trudy Vsesoyuznogo Nauchno-Issledovatel'skogo Geologorazvedochnogo Instituta VNIGRI.</em> 7(81): 237-295., available online athttps://books.google.pt/books?id=wPtES5YXhX0C[details] Available for editors [request]
new combination referenceKobayashi, F.; Vachard, D. (2022). Carboniferous foraminifers and biostratigraphy of lower Akiyoshi Limestone (Japan). <em>Revue de Paléobiologie.</em> 41(2): 99-239., available online athttps://doi.org/10.5281/zenodo.6858352[details] Available for editors [request]
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