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Operculina complanata

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<b>Operculina</b> <b>complanata</b> ; relation between test diameter and test thickness f...
Published: 01 January 2004
TEXT-FIGURE 6 Operculina complanata ; relation between test diameter and test thickness for different samples. Regression by power function: full line – using the average over all species ( a ) as the integrative constant; the function using the average of species ( a k ) as the integrative
Journal Article
Journal: PALAIOS
Published: 01 January 2017
PALAIOS (2017) 32 (1): 83–109.
... as Shallow Benthic Zone 23, late Chattian, includes: Austrotrillina asmariensis , Nephrolepidina spp., Eulepidina dilatata , E. elephantina , E. raulini , Amphistegina bohdanowiczi , A. mammilla , Operculina complanata , Nummulites cf. vascus , N. aff . kecskemetii , Heterostegina assilinoides , Spiroclypeus...
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Journal Article
Journal: GeoArabia
Publisher: Gulf Petrolink
Published: 01 October 2014
GeoArabia (2014) 19 (4): 59–108.
... to the east and possibly the west, and consist mostly of rhodoliths, echinoid and coral fragments together with the benthonic larger foraminifera Operculinella venosa, Operculina complanata, Heterostegina depressa and Borelis melo . The planktonic foraminifera include species of Globigerina, Globigerinoides...
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Journal Article
Published: 01 January 2009
Journal of Foraminiferal Research (2009) 39 (1): 23–39.
... in the circum-Mediterranean region; Miogypsina globulina , a worldwide tropical species common to both provinces; and Operculina complanata . Our data provide the first foraminiferal evidence from Turkey suggesting a main westward migration of several important groups from Southeast Asia to the eastern...
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Journal Article
Published: 01 October 2007
Journal of Foraminiferal Research (2007) 37 (4): 327–343.
... hispidulum , Pararotalia venusta , Planispirinella exigua , Quinqueloculina venusta and Triloculina oblonga ; and a middle shelf zone dominated by Amphistegina lessonii , Dendritina striata and Operculina complanata . The zonations of the study areas and relative abundances of individual species indicate...
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Journal Article
Published: 01 March 1953
Journal of Paleontology (1953) 27 (2): 238–250.
...D. J. Carter Abstract Reports results of a statistical study of variations in contemporaneous forms of the foraminifer Operculina, based on material from Tertiary marls of the Tamavua valley, Viti Levu, Fiji islands, with special reference to polymorphism, internal structure, and external...
Journal Article
Published: 01 January 2000
Journal of Foraminiferal Research (2000) 30 (1): 3–28.
... intensity. Less illuminated coarse sands are inhabited by Operculina cf. O. complanata (Defrance), which is the dominant symbiont-bearing foraminifer between light intensities of 0.2% to 12% surface illumination. The genus Planostegina Banner and Hodgkinson demonstrates transitions to the genus Operculina...
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Competition between  <b>Operculina</b> ammonoides – O. <b>complanata</b>,  and between  P...
Published: 01 January 2004
F igure 16. Competition between Operculina ammonoides – O. complanata, and between Planostegina longisepta–P. operculinoides at the northern transect of Sesoko Island.
Journal Article
Published: 01 January 2004
Micropaleontology (2004) 50 (2): 149–177.
...TEXT-FIGURE 6 Operculina complanata ; relation between test diameter and test thickness for different samples. Regression by power function: full line – using the average over all species ( a ) as the integrative constant; the function using the average of species ( a k ) as the integrative...
FIGURES | View All (19)
Journal Article
Published: 01 October 1998
Journal of Foraminiferal Research (1998) 28 (4): 345–348.
...Rudolf Röttger; Christer Dettmering; Ralph Krüger; Rolf Schmaljohann; Johann Hohenegger Abstract The morphology of the gametes of four species of nummulitids is compared. Heterostegina depressa , Cycloclypeus carpenteri and Operculina cf. complanata have biflagellated gametes as most foraminifera...
Series: The Micropalaeontological Society, Special Publications
Published: 01 January 2010
DOI: 10.1144/TMS004.4
EISBN: 9781862396227
... as a key (e.g. Boukhary et al . 1998 ). Note also that Hottinger (1977) mistakenly made Assilina ammonoides the ‘new’ type of Operculina while the actual type, O. complanata , was removed to Planoperculina , thus contravening the rules of the International Commission of Zoological Nomenclature...
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A – D )   <b>Operculina</b>   sp. equatorial sections, megalospheric form.  E )   ...
in > PALAIOS
Published: 01 January 2017
Fig. 7.— A – D ) Operculina sp. equatorial sections, megalospheric form. E ) Operculina sp. equatorial sections, microspheric form. F , G ) Operculina complanata ( Defrance 1822 ), equatorial sections of megalospheric forms. H – L ) Operculina sp., axial sections
Image
Scanning micrographs of operculinid foraminifera. 1.  <b>Operculina</b> ammonoides...
Published: 01 January 2004
TEXT-FIGURE 2 Scanning micrographs of operculinid foraminifera. 1. Operculina ammonoides (Gronovius), Sesoko Transect, sample Sesoko-11/1, 40m depth; 2. Operculina elegans Cushman, Minna Jima Transect, 40m depth; 3. Operculina complanata (Defrance), Sesoko Transect, sample Sesoko-4, 60m
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Partial correlation between characters in the species  <b>Operculina</b> elegans, ...
Published: 01 January 2004
TABLE 11 Partial correlation between characters in the species Operculina elegans, O. complanata, Planostegina longisepta , and Planoperculina heterosteginoides . Error probabilities in italics, bold numbers indicate significant correlation.
Image
1–6  <b>Operculina</b> discoidalis  (d’Orbigny).  1, 3, 5  photomicrographs.  2, 4...
Published: 01 January 2000
, specimens from 30 m in the transect NW of Sesoko Island ( Hohenegger and others, 1999 ). 13–18 Operculina cf. O. complanata (Defrance). 13, 15, 17 photomicrographs. 14, 16, 18 X-ray micrographs, specimens from 90 m in the transect NW of Sesoko Island. × 12.
Journal Article
Journal: PALAIOS
Published: 01 January 2017
PALAIOS (2017) 32 (1): 61–82.
...), Eulepidina raulini , Nephrolepidina sp., Nummulites cf. vascus , Nummulites cf. bouillei , Operculina complanata , Heterostegina assilinoides ( Fig. 9 D), Spiroclypeus blanckenhorni ( Fig. 9 E), Cycloclypeus aff. mediterraneus , Risananeiza pustulosa ( Fig. 9 F), Neorotalia viennoti...
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Journal Article
Published: 01 June 2019
Italian Journal of Geosciences (2019) 138 (2): 239–261.
.... External features of LBF were studied typologically, whereas their internal characteristics were mostly investigated morphometrically in the equatorial plane of free specimens obtained by mechanical splitting ( L ess , 1981 ). Nummulites kecskemetii and Operculina complanata were determined...
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Journal Article
Published: 01 February 2012
Italian Journal of Geosciences (2012) 131 (1): 66–76.
... and Eulepidina , nummulitids such as Operculina complanata (D efrance , 1822) and Heterostegina sp., Amphistegina , Neorotalia viennoti (G reig , 1935), and Sphaerogypsina globulus (R euss , 1848) are present in the hard rock sample I2703, and some of them were picked up from the washed residues...
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1–3.  Nephrolepidina praemarginata : 1. specimen I2707_N01; 2. I2707_N03; 3...
Published: 01 February 2012
Fig. 7 1–3. Nephrolepidina praemarginata : 1. specimen I2707_N01; 2. I2707_N03; 3. microspheric specimen from sample I2706; 4. Eulepidina formosoides from sample I2706; 5. Subaxial section of Eulepidina , sample I2703; 6. Operculina complanata , sample I2703; 7. Sphaerogypsina globulus
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Photomicrographs of carbonates of the Wadi Waqb Member (subsurface S-4). Wi...
in > GeoArabia
Published: 01 October 2014
. in packstone, 8,871.8 ft, 2 mm; (4) Amphistegina sp. in packstone, 8,854.7 ft, 2 mm; (5) Amphistegina sp. in packstone, 8,845.4 ft, 2 mm; (6) Amphistegina spp. in packstone, 8,842.4 ft, 2 mm; (7) Operculinella venosa , 8,871.8 ft, 1 mm; (8) Operculina complanata , 8,781.7 ft, 1 mm; (9) Operculina