Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 3. 1972. (Budapest, 1972)

Stratigraphie range; This species was first described by SCHWAGER (1883) from the lower Eocene of the Parafra Oasis, Libyan Desert, Egypt. SAID (I960) recorded this species from the Esna Shale of Luxor section, Nile Valley, Egypt. HILLEBRANDT (1962) considered this species as subspecies-of G. aequa

. and recorded it from the upper Paleocene (Ilerdian

) of the basin of Reichenhall and Salzburg, Austria. SAID & SABRY (1964) described this species from the upper Landenian "

G. velascoensis zone" of Gebel Aweina, Nile Valley. Globorotalia trinidadensis BOLLI (pl. I. fig. 8; pl. II. fig. 1; pl. X. fig. 4.) 1957 Globorotalia trinidadensis BOLLI. - BOLLI, p. 73, pi. 16, figs. 19-23. I960 Globorotalia trinidadensis BOLLI. - BOLLI & CITA, p. 389, pi. 35, figs. la-c. 1966 Globorotalia trinidadensis BOLLI. - EL NAGGAR, p.

236, pi. 18, figs. 7a-c. Description: Test medium to large, low trochospiral, composed of 3 whorls, the last whorl is composed of 5 chambers. Chambers inflated, increasing slowly in size as added. Axial periphery rounded. Wall calcareous, coarsely perforate; surface smooth, in early chambers slightly papillose. Sutures depressed,slightly curved on the dorsal and ventral sides. Umbilicus relatively wide, deep. Aperture exteriomarginal

, extraumbilical, in the form of a low arch with a thin flap. Diameter; 0,35 - 0,5 mm Occurrence:, G. trinidadensis floods the Danian in the section studied, characterizing the G. trinidadensis / G» édita zone.