Depratina Solovieva, 1996

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 : 544

Genus Depratina Solovieva, 1996

TYPE SPECIES. — Schwagerina prisca Deprat, 1912 by original designation.

ASSEMBLAGE. — The Depratina assemblage in this study are Depratina chernovi ( Fig. 10A, B ), Depratina convoluta ( Fig. 10C ), Depratina dubia ( Fig. 10D, E ), Depratina paratimanica ( Fig. 10F, G ), Depratina posadai ( Fig. 10H, I ), Depratina prisca prisca ( Fig. 10 J-M), Depratina prisca sphaeroidea ( Fig. 10N, O ), Depratina prisca timanica ( Fig. 10 P-S) and Depratina sitteri ( Fig. 10T, U ).

DESCRIPTION

Test small in size and short-inflated fusiform to subspherical in shape. The wall thin and three-layered, composed of tectum, thin lower and upper tectorium. Septa thin and plain across the centre of the test, slightly folded only in polar region of last one or two volutions. Chomata massive, symmetrical and rounded to subquadrate in shape.

REMARKS

The dominantly small sized and nearly globular or shortinflated fusiform shaped Profusulinella species were referred to as the “ prisca group” by Rauzer-Chernousova et al. (1951). Later, the “ prisca group” was assigned to the genus Depratina Solovieva in Rauzer-Chernousova, Bensh, Vdovenko, Gibshman, Leven, Ya Lipina, Reitlinger, Solovieva & Chediya, 1996. The species belonging to the genus Depratina differ from other Profusulinella species by having relatively globular or short-inflated fusiform test, smaller L/D ratio and poorly developed chomata. Hence, in this study the species belonging to the “ prisca group” (Rauzer-Chernousova et al. 1951) and the species which have same features such as Depratina chernovi , Depratina convoluta , Depratina paratimanica , Depratina posadai , Depratina prisca sphaeroidea and Depratina dubia are assembled in the genus Depratina .

Figures

FIG. 10. — Thin-section photomicrographs of the fusulinid assemblages of the Yassıpınar (YS), Bademli (BS) and GÖlbelen (GS) sections: A, B, Depratina chernovi (Rauzer-Chernousova in Rauzer-Chernousova, Gryzlova,Kireeva,Leontovich, Safonova & Chernova, 1951); A, axial section, 15Y22.06, YS; B, axial section, 15Y23.06,YS; C, Depratina convoluta (Lee & Chen in Lee,Chen & Chu, 1930), axial section, 15Y23.07.01, YS; D, E, Depratina dubia (Villa, 1995); D, axial section, 15Y28.12, YS; E, axial section, 15Y29.08.01, YS; F, G, Depratina paratimanica (Rauzer-Chernousova in Rauzer-Chernousova, Gryzlova, Kireeva, Leontovich, Safonova & Chernova, 1951); F, axial section, 15Y24.10, YS; G, axial section, 18G29.03, GS; H, I, Depratina posadai (Villa, 1995); H, axial section, 15Y24.04,