Beedeina Galloway, 1933

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 : 546

Genus Beedeina Galloway, 1933

urn:lsid:zoobank.org:act:6A5DC70D-E063-4CED-90F2-51371460D34C

TYPE SPECIES. — Fusulinella girtyi Dunbar & Condra, 1927 by original designation.

ASSEMBLAGE. — The Beedeina assemblage in this study includes: Beedeina cf. nytvica callosa ( Fig. 13H ), Beedeina elegans ( Fig. 13C, D ), Beedeina minuta Akbaş , n. sp. ( Fig. 13E, F ), Beedeina paradistenta ( Fig. 13I ), Beedeina pseudoelegans pseudoelegans ( Fig. 13 J-M), Beedeina pseudoelegans keltmensis ( Fig. 13N ), Beedeina samarica ( Fig. 13O, P ), Beedeina schellwieni ( Fig. 14 A-D), Beedeina tauridiana Akbaş , n. sp. ( Fig. 14E, F ) and Beedeina timanica ( Fig. 14H, I ).

DESCRIPTION

Test moderate to large in size and fusiform or relatively rhomboidal in shape. The four-layered wall has a tectum, lower and upper tectorium and diaphanotheca. Septa regularly to irregularly folded throughout the test. Chomata massive, symmetrical and quadrate in shape.

REMARKS

In accordance with the generic definitions discussed by Ishii (1957, 1958), several species originally assigned to Fusulina were reassigned to the genus Beedeina in some recent studies ( Villa 1995; Leven 1998; Leven & Gorgij 2008, 2011; and this study) based on their morphological features, such as the shell shape and lack of axial fillings. For this reason, Beedeina paradistenta which was originally described in the genus Fusulina by Safonova (in Rauzer-Chernousova et al. 1951) is considered as a species of the genus Beedeina in this study.

Figures

FIG. 13. — Thin-section photomicrographs of the fusulinid assemblages of the Yassıpınar (YS), Bademli (BS) and GÖlbelen (GS) sections: A, Quasifusulinoides cf. juvenatus Kireeva in Bogush, 1963, subaxial section, 19B48.08, BS; B, Quasifusulinoides quasifusulinoides (Rauzer-Chernousova in Rauzer-Chernousova, Gryzlova, Kireeva, Leontovich, Safonova & Chernova, 1951), axial section, 19B48.06, BS; C, D, Beedeina elegans (Rauzer-Chernousova & Belyaev in Rauzer-Chernousova, Belyaev & Reytlinger, 1940); C, subaxial section, 16B40B.08, BS; D, subaxial section, 18G48.03, GS; E, F, Beedeina minuta Akba ¸s, n. sp.; E, axial section, 18G41.03 (Holotype), GS; F, axial section, 18G41.06, GS; G, detailed view of the wall structure of the Beedeina minuta Akba¸s, n. sp., 18G41.06 (Four layered wall including tectum, diaphanotheca, lower and upper tectorium); H, Beedeina cf. nytvica callosa (Safonova in Rauzer-Chernousova, Gryzlova, Kireeva,

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