Spiroplectammina knebeli LE ROY, 1953

Ismail, Ahmed A., 2012, Late Cretaceous-Early Eocene benthic foraminifera from Esh El Mallaha area, Egypt, Revue de Paléobiologie 31 (1), pp. 15-50 : 28-29

Spiroplectammina knebeli LE ROY, 1953

Pl. I, fig. 8

1953. Spiroplectammina knebeli LE ROY , p. 51, pl. 2, figs. 10-12.

1956. Spiroplectammina knebeli LE ROY. -SAID & KENAWY, p. 121, pl. 1, fig. 10.

1976. Spiroplectammina knebeli LE ROY. - AUBERT & BERGG- REN, p. 40, pl. 1, fig.7

Remarks: This species is characterized by its rapid expansion toward the apertural end and by its broad convex apertural face as identified by LE ROY (1953).

Stratigraphic distribution: LE ROY (1953) recorded

this species only from his Maastrichtian unit “A” but it seems to have a longer range (Paleocene age) as referred by SAID & KENAWY (1956). In the study area, the Spiroplectammina knebeli found in the Late Cretaceous ( Globotruncana aegyptiaca Zone and Gansserina gansseri Zone ).