Beedeina tauridiana Akbaş, 2022

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 : 548

Beedeina tauridiana Akbaş , n. sp.

( Fig. 14E, F )

urn:lsid:zoobank.org:act:820DB710-024D-4E9D-8BC2-A79EF15646A8

HOLOTYPE. — Specimen no. 16B41.07 .

DIAGNOSIS. — A species of genus Beedeina with inflated ovoid test, convex lateral sides and rounded poles.

ETYMOLOGY. — This new species is named after its type location in the Taurides.

MATERIAL. — Two axial sections (specimen nos 16B41.07 and 16B41.08 ), one oblique section.

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

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

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

DESCRIPTION

Test large in size and ovoid in shape with convex lateral sides and rounded poles. The initial first to second volutions coiled tightly and spherical in shape, but in the succeeding volutions the test loosely coiled and after a rapid elongation the outer shape of the test become ovoid. Proloculus globular and relatively large, with an outside diameter of 182-190 microns. The number of volutions is up to 6-6½ in advanced specimens, and length ranges between 3.15 to 3.98 mm, diameters range between 2.03 to 2.10 mm and form ratios of 1.50 to 1.96. Wall is relatively thick (0.045 -0.050 mm in the outer volutions), four-layered and composed of a tectum, a welldeveloped diaphanotheca and dark-dense lower and upper tectorium ( Fig. 14G ). Septa regularly folded throughout the test. Chomata are massive, symmetrical and quadrate in shape, and their heights reach to half height of chamber.

REMARKS

Beedeina tauridiana Akbaş , n. sp. differs easily from the other species of genus Beedeina by its characteristic ovoid test shape.

Figures

FIG. 14. — Thin-section photomicrographs of the fusulinid assemblages of the Yassıpınar (YS), Bademli (BS) and GÖlbelen (GS) sections: A-D, Beedeina schellwieni (Staff in Schellwien & Staff, 1912); A, axial section, 16B40A.09, BS; B, axial section, 16B40C.11, BS; C, axial section, 18G41.15, GS; D, oblique section, 18G45.07, GS; E, F, Beedeina tauridiana Akba ¸s, n. sp.; E, axial section, 16B41.07 (Holotype), BS; F, axial section, 16B41.08, BS; G, detailed view of the wall