Granorotalia sublobata Benedetti, Di Carlo & Pignatti 2011
Creators: name: Deveciler, Ali
Publisher: name: Zenodo
Year: 2025
Subjects: Biodiversity
Taxonomy
Chromista
Foraminifera
Globothalamea
Rotaliida
Calcarinidae
Granorotalia
Granorotalia sublobata

description: Granorotalia sublobata Benedetti, Di Carlo & Pignatti, 2011
(Figs 4 I-S; 6A-N; 7A-O; 9G[1]; 10L; 11C)
Granorotalia sublobata Benedetti, Di Carlo & Pignatti, 2011: 715, figs 11a-e, 12a-b, 13a-f, 14a-h. — Benedetti et al. 2018: 86, figs 7.H-7.K, 8.A-8.C. — Sirel & Deveciler 2017: 70, pl. 2, fig. 15, pl. 3, figs 10-17.
Pararotalia viennoti – Reiss & Merling 1958: pl. 3, fig. 5.
Rotalia sp. 8 – Samuel et al. 1972: pl. XLVII, figs 1-4.
Neorotalia alicantina – Hottinger 2014: pl. 8.1, figs 1-12, 16-27.
DESCRIPTION
Test is much convex on ventral side than the dorsal side (Figs6D; 7C). Diameter is between 0.65-1.146 mm and the axial thickness is 0.43-0.7 mm.The ratio of (d/t-diameter/thickness)ranges from 1.51 to 1.63. Small spheric proloculus (0.0147 -0.0265 mm in diameter) is followed by subrectangular chambers arranging in three (in a 0.65 mm diameter) and four (in a 1.04 mm diameter) regular coiled whorls (Figs 6A; 7A, G, O). There are 12-13 chambers at the last whorl of grown specimens (Figs 6A; 7A; Benedetti et al. 2011: figs11b, d-e). Both dorsal and ventral sides filled with pillars (Figs 6 E-H, I-N; 7B, F-O). It has intraseptal, spiral and vertical canals (funnels) (Figs 6A, E-N; 7A-B, F-O).
REMARKS
One specimen in Reiss & Merling (1958: pl. 3, fig. 5) resembles to G. sublobata rather than Pararotalia viennoti (Greig) owing to the mentioned generic characteristics above. Pararotalia supposed to have smooth dorsal and ventral surface with a solid and undivided umbilical plug unlike the specimens in Reiss & Merling (1958).
Four specimens from Ovčiarsko village (Žilina/ Slovakia) in (Samuel et al. 1972; Fig. 6 K-N) defined as Rotalia sp. 8, are identical to G. sublobata for their pseudospine, pillars and funnels.
Neorotalia alicantina Colom, 1954 in Hottinger (2014) are not close to Neorotalia possessing different generic characteristics (also see in Benedetti et al. [2018: 86]). However, they are very close to G. sublobata related to the similar lateral, equatorial and axial features.
Additionally, one isolated specimen in Benedetti (2015: text-fig. 1, figs 1-3) was left out from the synonym because of the well-developed spines seeing in Ornatorotalia spinosa (Fig. 4 G-H). The axial sections of G. sublobata in Samuel et al. (1972: pl. XLVII, fig. 1), Benedetti et al. (2011: fig. 11a, 13e), Sirel & Deveciler (2017: pl. 3, fig. 13), and Benedetti et al. (2018: fig. 8A) were illustrated short spine-like (pseudospine) structures rather than a canaliculate true spine.
STRATIGRAPHIC DISTRIBUTION
G. sublobata was created first in Cuisian limestone deposits in Monte Bosco formation, Sicily-Italy and it was identified in the same stratigraphic position from Haymana-Turkey (Benedetti el al. 2011; Sirel & Deveciler 2017). However, it was previously figured under different names in Middle Eocene of Nitzana, Israel (Reiss & Merling 1958) and West Carpatian from Slovakia (Samuel et al. 1972). Although 27 figures in pl. 8.1 in (Hottinger 2014) are identical to G. sublobata, the stratigraphic position and locality of the samples were left unclear.
In this study, G. sublobata has been found in early Lutetian (SBZ 13) together with Nummulites cf. malatyaensis (Fig. 8A, B), N. praediscorbinus Schaub, 1981 (Fig. 8 C-H), N. praeaturicus Schaub, 1962 (Fig. 8 I-K), Nummulites somaliensis Nuttall & Brighton, 1931 (Fig. 8L), Alveolina cf. stipes (Fig. 9A, B), A. stercusmuris (Fig. 9C, D), A. kieli (Fig. 9E, F 1, G2), A. cf. levantina Hottinger, 1960 (Fig. 11A, B), Orbitolites cotentinensis Lehmann, 1961 (Fig. 10 A-H), Pseudochrysalidina alva (Silvestri, 1939) (Fig. 10J, K), Asterigerina rotula (Kaufmann, 1867) (Fig. 11 C-E), Sphaerogypsina globulus (Reuss, 1848) (Fig. 11F), Gyroidinella magna Le Calvez, 1949 (Fig. 11 G-I) and Fabiania cassis (Oppenheim, 1896) (Fig. 11J).
description: Published as part of Deveciler, Ali, 2025, Biostratigraphic revision and systematic discussion of Granorotalia sublobata Benedetti, Di Carlo & Pignatti, 2011, pp. 327-341 in Geodiversitas 47 (7) on pages 332-338, DOI: 10.5252/geodiversitas2025v47a7, http://zenodo.org/record/15187945