Fusulinella? sp. C

Akba, Melikan & Okuyucu, Cengiz, 2022, Fusulinid Biostratigraphy of the Moscovian- Lower Kasimovian of Hadim Nappe, Central Taurides, southern Turkey, Geodiversitas 44 (19), pp. 527-562 : 558-559

Fusulinella? sp. C

( Fig. 18 Q-T)

STRATIGRAPHIC RANGE. — Carboniferous, Pennsylvanian, upper Moscovian, Myachkovian.

OCCURRENCE. — Bademli section of the Hadim Nappe (Bademli-Akseki/ Antalya, Central Taurides, Turkey).

DESCRIPTION

Test moderately in size and inflated ovoid to cylindrical in shape with convex lateral sides and narrowly rounded to pointed poles. All volutions are coiled loosely. Proloculus globular and small, with an outside diameter of 70-90 microns. The number of volutions is up to 5-6 in advance specimens, and length ranges between 2.20 to 2.63 mm, diameters range between 1.34 to 1.50 mm and form ratios of 1.63 to 1.75. The four-layered wall is relatively thick (0.030 -0.060 mm in the outer volutions), and is composed of a thin-dark tectum, a prominent diaphanotheca, thin lower and upper tectorium. Septa folded across the centre of the test. Chomata are massive, symmetrical and rounded in shape.

REMARKS

This species shows similarity to some species of the genus Fusulinella concerning the wall structure and septal fluting, but based on its smaller sizes and shape of test and absence of ideal sections for better identification, they are determined as Fusulinella ? sp. C. On the other hand, Fusulinella ? sp. B and Fusulinella ? sp. C are similar to each other in many respects but differentiated by having different form ratios (L/D).

Figures

FIG. 18. — Thin-section photomicrographs of the fusulinid assemblages of the Yassıpınar (YS), Bademli (BS) and GÖlbelen (GS) sections:A, Fusulinella praebocki Rauzer-Chernousova in Rauzer-Chernousova,Gryzlova,Kireeva,Leontovich,Safonova & Chernova,1951,axial section,16B42.18.02,BS;B, Fusulinella praecolaniae Safonova in Rauzer-Chernousova, Gryzlova,Kireeva, Leontovich, Safonova & Chernova, 1951, axial section, 16B38.03, BS; C, D, Fusulinella propriaforma Akba ¸s, n. sp.; C, subaxial section, 16B39.03 (holotype), BS; D, axial section, 16B39.08, BS; E, detailed view of the wall structure of the Fusulinella propriaforma Akba ¸s, n. sp., 16B39.08 (four-layered wall including tectum, diaphanotheca, lower and upper tectorium); F, Fusulinella pseudobocki Lee & Chen in Lee, Chen &