Borelis pygmaea ( Hanzawa, 1930 )

Gedik, Fatma, 2017, First record of the new Neoplanorbulinid species (Foraminifera) from the Early Oligocene in Turkey, Malatya Basin, Eastern Taurids, Geodiversitas 39 (2), pp. 273-284 : 282-283

Borelis pygmaea ( Hanzawa, 1930)

( Fig. 6P)

Borelis (Fasciolites) pygmaea Hanzawa, 1930: 94 , pl. 26, figs 14, 15.

Neoalveolina pygmaea – Bakx 1932: 237, pl. 3, figs 18, 19. — Bursch 1947: 28, pl. 1, figs 11, 15, 19. — Adams 1965: 25.

Borelis pygmaea – Sirel 2003: 298, pl. 11, figs 1-7. DESCRIPTION

The specimens of the megalospheric form are medium sized and fusiform. Their axial diameter is 2.10 mm and equatorial diameter 0.68 mm at the 6 th whorls. Index of elongation is 3.08. The small spherical megalosphere (its diameter is 0.65 mm; Fig. 6P) is followed by tightly coiled four or five and loosely arranged adult whorls. The whorls are coiled tightly at the equatorial region, but they are arranged loosely at axial region, so that the axial thickening becomes higher at the poles of the test. The subspheric to oval chamberlets are arranged tightly and their size becomes large at the axial regions.