Cherchi, A.; Schroeder, R. (2005). Menaella bustamantei n. gen., n. sp. (Acervulinacea, Foraminiferida) from the uppermost Albian of northern Spain. Bollettino della Società Paleontologica Italiana. 44: 1-10., available online at (http://paleoitalia.org/media/u/archives/003-Cherchi-et-al-4412005.pdf) page(s): p. 4, pl. 1, figs. 1-6, 9 (holotype fig. 5). 1 - Oblique axial section. SMF 34628(1), x 150. 2 - Axial section. CAS 5, x 150. 3 - Axial section (cr - chamber roof). CAS 2, x 150. 4 - Tangential section. CAS 1, x 150. 5 - Holotype. Axial section (E - embryonic chamber). CAS 6, x 150. 6 - Oblique axial section (cv - calcite vein). CAS 4, x 150. 9 - Subaxial section (1,2,3,4 - laminae of the adulte stage; cr - chamber roof) CNU-1, x 150.