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307 results for “benthic foraminifera”
Fig. 9 in Dictyoconella Henson, 1948, Upper Cretaceous Larger Benthic Foraminifera: A Taxonomic Revision With The Establishment Of Gusicella Gen. Nov. (Type-Species Dictyoconella Minima Henson)
Fig. 9 Gusicella minima (Henson) gen. et comb. nov. from the late Maastrichtian of the Tarbur Formation, SW Iran (Naghan section: c–f, h–k); Mandegan section: a–b, g, l). a subaxial section of an assumed microspheric specimen. b–c axial sections showing initial spire with acute margin beneath the apex. d oblique section showing the marginal trough between the marginal and central zones as well as a circular row of marginal apertures between. e tangential section showing subepidermal network; septa in the lower part marked by white dash lines. f subaxial section of a possibly microspheric specimen. g transverse section. h subaxial section. i tangential section showing aligned main beams. j subaxial section of a possibly microspheric specimen. k tangential section. l slightly oblique transverse section showing several orders of vertical partitions (beams, intercalary beams), marginal trough, and pillared central zone. Abbreviations: m.f. = marginal foramen, m.t. = marginal through, pi = pillar. Thin sections: Rt 105 (a), 2Ng 17 (c), Rt 96 (b), 2Ng 167 (d), 2Ng 174 (e), 2Ng 118-1 (f), Rt 108-2b (g), 2Ng 169 (h), 2Ng 191 (i), 2Ng 176 (j), 2Ng 146 (k), Rt 111-1 (l).
Fig. 6 in Dictyoconella Henson, 1948, Upper Cretaceous Larger Benthic Foraminifera: A Taxonomic Revision With The Establishment Of Gusicella Gen. Nov. (Type-Species Dictyoconella Minima Henson)
Fig. 6 Comparison of Gusicella gen. nov., Carinoconus Cherchi & Schroeder, and Dictyoconus Blanckenhorn.
Fig. 1 in Dictyoconella Henson, 1948, Upper Cretaceous Larger Benthic Foraminifera: A Taxonomic Revision With The Establishment Of Gusicella Gen. Nov. (Type-Species Dictyoconella Minima Henson)
Fig. 1 Map of the Persian Gulf area showing the location of Dukhan Well in Qatar, the type-locality of Dictyoconella complanata Henson and Gusicella minima (Henson) gen. et comb. nov. (from free maps, https://d-maps.com).
Fig. 5 in Dictyoconella Henson, 1948, Upper Cretaceous Larger Benthic Foraminifera: A Taxonomic Revision With The Establishment Of Gusicella Gen. Nov. (Type-Species Dictyoconella Minima Henson)
Fig. 5 Dictyoconus bakhtiari Schlagintweit et al. from the late Maastrichtian of the Tarbur Formation, SW Iran (Naghan section). Scale bar = 0.5 mm.
Fig. 4 in Dictyoconella Henson, 1948, Upper Cretaceous Larger Benthic Foraminifera: A Taxonomic Revision With The Establishment Of Gusicella Gen. Nov. (Type-Species Dictyoconella Minima Henson)
Fig. 4 Dictyoconella complanata Henson from the Maastrichtian of the Tarbur Formation of Iran (Naghan section, a-i, k) and the Simsima Formation of Qatar (j). a, d, oblique sections perpendicular to plane of compression. Note the inclination of the apical-juvenile part expressed by the parallel-sectioning of septum (s) and foramina (f) in d. b, oblique section passing through the initial part of a microspheric specimen. c, f, i-k, oblique sections in the plane of compression (j, paratype from Henson, 1948, pl. 10, fig. 14). Detail from i shows the fine subepidermal cellular network, marginal foramina and undivided marginal trough. e, g-h, oblique sections passing through the initial part of megalospheric specimens. Thin sections: 2Ng 81- 2 (a, d), Ng 76 (b), 2Ng 81-3 (c), Ng 85 (e), 2Ng 87-2 (f, i), 2Ng 80-1 (g), 2Ng 85-4 (h), 2Ng 81-1 (k). Abbreviations: b = beam, deu = deuteroconch, f = foramen m.f. = marginal foramen, m.t. = marginal trough, pi = pillar, pr = proloculus, T = Tarburina zagrosiana Schlagintweit et al. (in k).
Fig. 8 in Dictyoconella Henson, 1948, Upper Cretaceous Larger Benthic Foraminifera: A Taxonomic Revision With The Establishment Of Gusicella Gen. Nov. (Type-Species Dictyoconella Minima Henson)
Fig. 8 Gusicella minima (Henson) gen. et comb. nov. from the late Maastrichtian of the Tarbur Formation, SW Iran (Naghan section: a–b, j, l; Mandegan section: c–i, k, m–p). a Subaxial section. b, i, l Oblique sections. c–e, m Deep tangential sections displaying primary septules (beams) continuous (aligned) from one chamber to the next. f Shallow tangential section displaying subepidermal network of beams and rafters. g, j, l, o–p Different transverse sections, some slightly oblique. Note five marginal foramina arranged in a radial circle (inside yellow marked rectangle in o). Note oval test outline in j. Subaxial section. Note alternation of pillars by stairway-like arrangement of foramina (yellow line) and opaque fused pillars/secondary deposits in the central zone. k Detail from h showing marginal foramina arranged in vertical lines between successive chambers. n Tangential-oblique section. Abbreviations: b = beam, ib = intercalary beam, f = foramen, m.f. = marginal foramen, m.t. = marginal through, pi = pillar, s = septum. Thin sections: Ng 196 (a), Ng 192 (b), Rt 108-3 (c–e, g, n), Rt 104 (f), Rt 96 (h, k), Rt 108-6 (i), Ng 187 (j), Ng 186 (l), Rt 107 (m), Rt 102-2 (o), Rt 104 (p).
Fig. 7 in Dictyoconella Henson, 1948, Upper Cretaceous Larger Benthic Foraminifera: A Taxonomic Revision With The Establishment Of Gusicella Gen. Nov. (Type-Species Dictyoconella Minima Henson)
Fig. 7 Gusicella minima (Henson) gen. et comb. nov. from the late Maastrichtian of the Tarbur Formation, SW Iran (Mandegan section: b, l; Naghan section: a, c–k). a Oblique transverse section. b Oblique section cutting the marginal (upper part) and central zones (lower part) displaying irregularly distributed fused pillars/secondary deposits. c, k Subaxial sections. d–g, Axial sections showing initial spire. h–i Details (from e and g) of the initial spire. j Tangential section. Slightly oblique transverse sections showing subdivision of the marginal zone and circle of marginal apertures (left and above). Abbreviations: m.f. = marginal foramen, m.t. = marginal trough, pr = protoconch, s.d. = secondary deposits/fused pillars. Thin sections: 2Ng 17 (a, k), Rt 100 (b), Ng 180-1 (c), 2Ng 179-1 (d), 2Ng 168 (e, h), 2Ng 175 (f), 2Ng 174 (g, i), 2Ng 177 (j), Rt 113 (l).
Fig. 2 in Annular Chambers In Cretaceous Orbitolinidae (Larger Benthic Foraminifera): An Overview
Fig. 2 Annular chambers in Palorbitolinoides hedini Cherchi & Schroeder from the middle Albian Kazhdumi Formation of southwestern Iran. a Reflexed conico-concave test (Henson, 1948, fig. 12k–l). Early uniserial post-embryonic chambers marked in orange. b–c Low conico-concave test (Henson, 1948, fig. 12i–j) completely formed by annular post-embryonic chambers, so that the embryo base marks the test base. d High covexo-concave test (Henson, 1948, fig. 12r); compare to the specimen of Pseudorbitolina schroederi Luger shown in Fig. 3d.
Fig. 4 a in Annular Chambers In Cretaceous Orbitolinidae (Larger Benthic Foraminifera): An Overview
Fig. 4 a Schematic reconstruction of Heterocoskinolina bariensis Luperto-Sinni & Reina displaying stocked-cone structure of three chambers with septal infoldings (cupules = cu) converging towards the central area with cribrate foramina (fo). b–c Axial sections re-illustrated from Tasli & Solak (2019, figs. 8.4c and 6.1c, modified), late Albian of Turkey. Abbreviations: fo = foramen, se = septum.
Fig. 1 in Annular Chambers In Cretaceous Orbitolinidae (Larger Benthic Foraminifera): An Overview
Fig. 1 Examples for the terminology of chamber morphology (modified from Rat, 1963). Annular chambers in f-g and j are marked in gray.
Fig. 2 in Taxonomic And Biostratigraphic Remarks On Torinosuella Maync, 1959 And Balkhania Mamontova, 1966, Larger Benthic Foraminifera From The Lower Cretaceous Of Iran (Sangestan, Tirgan Formations)
Fig. 2. Torinosuella peneropliformis (Yabe & Hanzawa). a-b. Late Berriasian of Serbia (locality: see Bucur et al., 2020, e.g., fig. 6J). c, e. From Cherchi & Schroeder (2005, pl. 1, figs, 1, 4), Upper Hauterivian-lower Barremian of NE Spain. d. From Bucur et al. (2003, pl. 41, fig. 4), 'late Neocomian Carbonate Member', Sangestan Formation, Central Iran. f. From Granier et al. (2023, pl. 3, fig. T), Upper Barremian Tirgan Formation of NE Iran. g. From Gheiasvand & Bartolini (2023, fig. 4B), Hauterivian? lower Barremian? of northeastern Iran. h-m. From Maync (1959, pl. 1, figs. 6a-b, 7-10, Copyright by Swiss Geological Society), Torinosu Limestone of Japan.
Fig. 1 in Taxonomic And Biostratigraphic Remarks On Torinosuella Maync, 1959 And Balkhania Mamontova, 1966, Larger Benthic Foraminifera From The Lower Cretaceous Of Iran (Sangestan, Tirgan Formations)
Fig. 1. Balkhania balkhanica Mamontova (a, c, e-f) and Pseudochoffatella minima Schlagintweit et al. (b, d). a. From Mamontova (1960, fig. 2/3 modified showing early stage), Lower Barremian of Turkmenistan. b. From Schlagintweit et al. (pl. 5, fig. 12, holotype), lower Aptian of Central Iran (Taft Formation). c. From Taherpour Khalil Abad et al. (2013, fig. 4a), lower Aptian of northeastern Iran (Tirgan Fm). d. Same as b, so far unillustrated. e-f. lower Aptian of Central Iran (locality: see Schlagintweit et al., 2013b).
Plate 1 in A new record of larger benthic foraminifera from Jeju Island (South Korea)
Plate 1. Scanning electron microscope (SEM) images and photomicrographs of Sorites orbiculus (Forsskål in Niebuhr, 1775). A-C. SEM image; A. peripheral, apertural view; B, C. lateral view. Scales= 100 μm. D, E. photomicrographs of the lateral view. Scales = 100 μm.
Plate 4 in A new record of larger benthic foraminifera from Jeju Island (South Korea)
Plate 4. Scanning electron microscope images of Sorites orbiculus (Forsskål in Niebuhr, 1775). A. peripheral, apertural view; B-H. closeup of apertural side. The symbol * is indicating the '8' shaped aperture. Scales: 100 μm; I-K. close-up of broken part, some diatoms (white arrowhead) are on the inner surface of chamberlet. Scales = 10 μm.
Fig. 1 in A new record of larger benthic foraminifera from Jeju Island (South Korea)
Fig. 1. Map of the occurrence records of Soritidae from waters close to Korean Peninsula (A), and the magnified sampling site of present study (B). The collection site of newly recorded Sorites in this study is marked with a star symbol (★), and the sites of occurrence records of Soritidae in waters close to Korea are marked with dot symbols (●) (see Table 1 for additional information). The map was generated using QGIS software v. 3.16.13 and the free vector and raster map data at Natural Earth (naturalearthdata.com).
Plate 2 in A new record of larger benthic foraminifera from Jeju Island (South Korea)
Plate 2. Scanning electron microscope images of the newly recorded LBF, Sorites orbiculus (Forsskål in Niebuhr, 1775). A. peripheral, apertural view; B-I. close-up of apertures. Scales = 100 μm.
Plate 3 in A new record of larger benthic foraminifera from Jeju Island (South Korea)
Plate 3. Scanning electron microscope images of the newly recorded LBF, Sorites orbiculus (Forsskål in Niebuhr, 1775). A. peripheral, apertural view; B-I. close-up of apertures. The '8' shaped aperture is indicated with * symbol. Scales = 100 μm.
Fig. 1 in Three new records of recent benthic Foraminifera from Korea
Fig. 1. Map of three sampling stations in the southwestern part of Jeju Island (East China Sea). This map is made with Natural Earth free vector and raster map data and QGIS software v.2.18.18.
Plate 1. 1 in Three new records of recent benthic Foraminifera from Korea
Plate 1. 1. (a-d) Ammobaculites formosensis Nakamura, 1937; 1a. SEM image, side view; 1b. Digital camera image, side view; 1c. Frontal view; 1d. Apertural side view. 2. (a-d) Cylindroclavulina bradyi (Cushman, 1911); 2a-b. Side view; 2c-d. Apertural side view. 3. (a-d) Saracenaria hannoverana (Franke, 1936); 3a. Side view; 3b. Ventral view; 3c. Dorsal view; 3d. Apertural side view.
Fig. 1 in Benthic and Planktic Foraminifera as Indicators of Late Glacial to Holocene Paleoclimatic Changes in a Marginal Environment: An Example from the Southeastern Bay of Biscay
Fig. 1. Study area bathymetry (Liu and Dittert 2010), surface circulation patterns (Koutsikopoulos et al. 1996), and location of the study Site WH (44°33′N, 2°45′W; 2,000 m water depth). The position of Site KS10b (Mojtahid et al. 2013) is marked by a white square. IPC – Iberian Poleward Current, ENACW – Eastern North Atlantic Central Waters.
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