Hofker, J. (1956). Die Pseudotextularia-Zone der Bohrung Maasbüll I und ihre Foraminiferen-Fauna. <em>Paläontologische Zeitschrift.</em> 30: 59-79., available online athttps://doi.org/10.1007/bf03041774[details] Available for editors [request]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Heterostomella gracilis Hofker, 1956 †. Accessed at: https://www.marinespecies.org/foraminifera/aphia.php?p=taxdetails&id=904763 on 2025-05-15
original descriptionHofker, J. (1956). Die Pseudotextularia-Zone der Bohrung Maasbüll I und ihre Foraminiferen-Fauna. <em>Paläontologische Zeitschrift.</em> 30: 59-79., available online athttps://doi.org/10.1007/bf03041774[details] Available for editors [request]
basis of recordEllis, B. F.; Messina, A. R. (1940-2015). Catalogue of Foraminifera. <em>Micropaleontology Press, American Museum of Natural History, New York.</em> [details]
Present Inaccurate Introduced: alien Containing type locality