, : Berry, E. W. (1928). The smaller foraminifera of the middle Lobitos shales of northwestern Peru. Eclogae Geologae Helvetiae. 21: 390-405. Plate , Fig.
dataset number: FEU-1021680
Citation: , : Berry, E. W. (1928). The smaller foraminifera of the middle Lobitos shales of northwestern Peru. Eclogae Geologae Helvetiae. 21: 390-405. Plate , Fig