Foraminifera source request

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Schroeder, R.; Darmoian, S. A. (1977). Gyroconulina columellifera n. gen., n. sp., a complex ataxophragmiid foraminifer from the Aqra limestone (Maastrichtian) of Northern Iraq. Bollettino della Società Paleontologica Italiana. 16(1): 117-123.