Orthokarstenia clarki (CUSHMAN & CAMPBELL, 1936)

Ismail, Ahmed A., 2012, Late Cretaceous-Early Eocene benthic foraminifera from Esh El Mallaha area, Egypt, Revue de Paléobiologie 31 (1), pp. 15-50 : 39

Orthokarstenia clarki (CUSHMAN & CAMPBELL, 1936)

Pl. III, fig. 13

1936. Siphogerinoides clarki CUSHMAN & CAMPBELL , p. 91, pl. 13, figs. 9-12.

1964. Orthokarstenia clarki (CUSHMAN & CAMPBELL) .- LOE- BLICH & TAPPAN, p. 567, pl. 446, figs. 11, 12.

Remarks: It is distinguished by having faint longitudinal striae.

Stratigraphic distribution: It was first described from the Late Cretaceous of California. In the study area, it is rarely found in the Maastrichtian and Paleocene sediments.