Fusulinid Biostratigraphy of the Moscovian- Lower Kasimovian of Hadim Nappe, Central Taurides, southern Turkey
Author
Akba, Melikan
Author
Okuyucu, Cengiz
text
Geodiversitas
2022
2022-06-09
44
19
527
562
journal article
78129
10.5252/geodiversitas2022v44a19
dcecd640-c7c1-4fb8-a484-0d2fa4de88da
1638-9395
6677663
urn:lsid:zoobank.org:pub:AF3C4774-484D-4B49-81D1-3172F6AFABD9
Beedeina minuta
Akbaş
,
n. sp.
(
Fig. 13E, F
)
urn:lsid:zoobank.org:act:
1E73CD2E-1886-47F8-BA1A-6C4294DAA3CC
HOLOTYPE
. —
Specimen
no.
18G41.03
.
DIAGNOSIS. — A species of genus
Beedeina
with small and rhomboidal test, straight lateral sides and pointed poles.
ETYMOLOGY. — Latin
minuta
, meaning small, named for its smaller size compare to the other species of the genus
Beedeina
.
MATERIAL EXAMINED. —
Two axial sections
(specimens nos
18G41.03
and
18G41.06
).
TYPE LOCALITY
. — Gölbelen section of
Hadim Nappe
(BozkIr/
Konya
,
Central Taurides
,
Turkey
).
STRATIGRAPHIC RANGE. — Carboniferous, Pennsylvanian, upper Moscovian, Podolskian.
OCCURRENCE. — Gölbelen section of the Hadim Nappe (BozkIr/
Konya
, Central Taurides,
Turkey
).
DESCRIPTION
Test small in size and rhomboidal in shape with lateral sides and pointed to bluntly pointed periphery and poles. All volutions coiled tightly, and the rhomboidal shape of the test is preserved from the first volutions to the last one. Proloculus globular and large, with an outside diameter of 180-210 µm. The number of volutions is up to 4½-
5 in
advanced specimens and length ranges between
1.70 to 1.85 mm
, diameters range between
1.18 to 1.30 mm
and form ratios of 1.31 to 1.57. Wall is thin (
0.025
-0.035
mm
in the outer volutions), four-layered and composed of a distinct tectum, a diaphanotheca which thickness gradually increases towards outer volutions, and relatively thick lower and upper tectorium (
Fig. 13G
).
Septa
regularly folded throughout the test. Chomata are massive, symmetrical and rounded.
FIG. 12. — Thin-section photomicrographs of the fusulinid assemblages of the Yassıpınar (YS), Bademli (BS) and GÖlbelen (GS) sections:
A
,
B
,
Aljutovella pojarkovie
Dzhenchuraeva 1979
;
A
, axial section, 15Y33.08, YS;
B
, axial section, 15Y37.09, YS;
C
,
D
,
Aljutovella postaljutovica
Safonova
in
Rauzer-Chernousova, Gryzlova,Kireeva,Leontovich,Safonova & Chernova,1951;
C
, subaxial section,15Y30.04,YS;
D
axial section,18G29.04,GS;
E -G
,
Aljutovella priscoidea
(Rauzer-
Chernousova, 1938
);
E
, axial section, 15Y24.19, YS;
F
, axial section, 16B35.04, BS;
G
, axial section, 15Y24.25, YS;
H
,
I
,
Aljutovella skelnevatica
(Putrya & Leon-
tovich, 1948);
H
, axial section, 18G27.11, GS;
I
, axial section, 18G27.16, GS;
J
,
K
,
Aljutovella splendida
Leontovich
in
Rauzer-Chernousova
, Gryzlova,
Kireeva
,
Leontovich
,
Safonova
&
Chernova
, 1951;
J
, axial section, 15Y24.17, YS;
K
, axial section,18G28.16,GS;
L
,
Aljutovella
cf.
stocklini
Leven, Davydov & Gorgij,2006
, axial section, 18G28.14.02, GS;
M
,
N
,
Aljutovella subaljutovica
Safonova
in
Rauzer-Chernousova
, Gryzlova,
Kireeva
,
Leontovich
,
Safonova
&
Chernova
, 1951;
M
, axial section, 15Y24.23, YS;
N
, axial section, 18G27.14,GS;
O
,
P
,
Aljutovella tumida
Bensh, 1969
;
O
, axial section, 18G27.13,GS;
P
, axial section,18G27.21, GS;
Q
,
R
,
Aljutovella typica
Akba
¸s, n. sp.;
Q
, axial section, 15Y30.08 (
Holotype
), YS;
R
, axial section, 18G29.09, GS;
S
,
T
, detailed view of the wall structure of the
Aljutovella typica
Akba
¸s, n. sp., 15Y30.08 (
Holotype
) (
Three
layered wall including tectum, lower and upper tectorium);
U
,
Tikhonovichiella praetikhonovichi
Akba
¸s, axial section, 15Y21.38, YS.
Scale
bar:
1 mm
except S,
T
, 500 µm.
REMARKS
Beedeina minuta
Akbaş
,
n. sp.
differs easily from the other species of genus
Beedeina
by its smaller test size.