Kulagina, E.; Rumyantseva, Z. S.; Pazukhin, V. N.; Kochetova, N. N. (1992). Граница нижнего среднего карбона на Южном Урале и Среднем Тянь-Шане - Lower/Middle Carboniferous boundary in the South Urals and Central Tien Shan. <em>Moscow, Nauka Publishing House.</em> 1-110., available online athttps://www.researchgate.net/profile/Elena_Kulagina/publication/278667264[details] Available for editors [request]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2024). World Foraminifera Database. Plectostaffella praevarvariensis Rumyantseva in Kulagina et al., 1992 †. Accessed at: https://marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=1250631 on 2024-09-10
original descriptionKulagina, E.; Rumyantseva, Z. S.; Pazukhin, V. N.; Kochetova, N. N. (1992). Граница нижнего среднего карбона на Южном Урале и Среднем Тянь-Шане - Lower/Middle Carboniferous boundary in the South Urals and Central Tien Shan. <em>Moscow, Nauka Publishing House.</em> 1-110., available online athttps://www.researchgate.net/profile/Elena_Kulagina/publication/278667264[details] Available for editors [request]