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Fornasini, C. (1900). Le Polimorphine e le Uvigerine fossili d'Italia. Bollettino della Societa` geologica italiana. vol. 19, p. 132-172., available online at (http://www.biodiversitylibrary.org/item/209626#page/180/) page(s): p. 47 tf. 5; note: Differs from Parker, Jones & Brady's figure (1865) after Soldani.
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Parker W.K., Jones T.R. & Brady H.B. (1871). On the nomenclature of the Foraminifera. Part XIV. The species enumerated by D'Orbigny in the 'Annales des Sciences Naturelles,' 1826, vol. vii. - IV. The species founded upon the figures in Soldani's 'Testaceographia ac Zoophytogeographia'. [Continued from vol. iv. p. 392.]. Annals and Magazine of Natural History. (4) 8 (45): 145-179., available online at (http://www.biodiversitylibrary.org/item/86916#page/159/) page(s): p. 170 pl. 11 fig. 104
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Soldani A. 1789-1798. Testaceographiae ac zoophytographiae parvae et microscopiae. Tomus primus (1789), pp. i-xxxii, 1-289; pl. pl. 1-179; Tomus secundus (1798), pp. i-vii, 1-148; 1-26, and appendix pl. I-XXIII [reproduced from Saggio orittografico, 1780]. Senis [Sienna], Francisco Rossi., available online at (http://gdz.sub.uni-goettingen.de/dms/load/toc/?PPN=PPN572634544) note: Unavailable nomenclaturally.