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Journal articles on the topic 'Verneuilinoidea'

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1

Veklych, Olena. "Some Late Cretaceous agglutinated foraminifers from the Northern outskirts of Donbas, Ukrain." GEO&BIO 2023, no. 25 (2023): 64–74. http://dx.doi.org/10.53452/gb2506.

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The article describes four species of agglutinated foraminifers belonging to three genera (Verneuilina, Orbignyna, and Spiroplectammina) three superfamilies (Verneuilinoidea, Ataxophragmoidea, and Spiroplectamminoidea) and two orders (Ataxophragmiida and Ammodiscida, suborder Textulariina). Benthic species of foraminifers play an important role in the stratigraphic subdivision of the Upper Cretaceous deposits of the Northern outskirts of Donbas and correlation with adjacent territories, as they make up the most part of the assemblage in the samples. For this region, the foraminifera species Ve
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2

Abdullahi, Muhammad, Yusuf Dabari Mamman, Boniface Finthan, M. B. Saleh, and A. Amodu. "The BIOSTRATIGRAPHY AND PALEOENVIRONMENTAL ANALYSIS OF THE YOLDE FORMATION, NORTHERN BENUE TROUGH, NIGERIA." FUDMA JOURNAL OF SCIENCES 8, no. 5 (2024): 244–57. http://dx.doi.org/10.33003/fjs-2024-0805-2689.

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This research is an attempt to investigate the micropaleontology of the Yolde Formation with the view to determine the age and paleoenvironments of the formation. The Yolde Formation, a key stratigraphic unit within the Benue Trough, provides insights into the Cretaceous paleoenvironments of the region. A total of ten samples were examined using a light microscope. Samples two and six exhibited the greatest taxonomic diversity, each containing 13 different taxa, while the other samples showed a range of 1 to 11 taxa. The benthic taxa Marssonella, Ammobaculites agulutinans, and Plectina were fo
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3

Podobina, Vera M. "New data on middle and late Albian foraminifera and biostratigraphy of the northern palaeobiogeographical district of western Siberia." Geologos 21, no. 1 (2015): 71–78. http://dx.doi.org/10.1515/logos-2015-0004.

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Abstract The present paper discusses foraminiferal assemblages and biozones established on the basis of studies of samples from ten borehole sequences of the Khanty-Mansiysk Horizon in the Samotlor area of the northern palaeobiogeographical district of western Siberia (Russia). In this region, middle and late Albian foraminiferal assemblages were first distinguished in western Siberia. Levels from which these assemblages have been recovered, are here referred to the following foraminiferal zones, the Ammobaculites fragmentarius-Gaudryinopsis filiformis Zone (middle Albian) and the Ammotium bra
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4

Tibert, Neil E., and R. Mark Leckie. "Cenomanian-Turonian (Upper Cretaceous) foraminifera from the westernmost Colorado Plateau, southwest Utah, U.S.A." Micropaleontology 59, no. 6 (2013): 555–78. http://dx.doi.org/10.47894/mpal.59.6.03.

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Foraminifera from the Cenomanian-Turonian Dakota Formation, Straight Cliffs Formation, Iron Springs Formation, and Tropic Shale of southwest Utah are described and illustrated in detail. The assemblage comprises 37 taxa including 27 agglutinated species and only nine calcareous taxa. The associations of the foraminifera can be summarized on the basis of their distributions relative to geologic age and formation. The lowermost units of theDakota Formation in southwestUtah and Coal Mine Mesa Arizona are characterized by a Trochammina rutherfordi mellariolium-Verneuilinoides perplexus association
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5

Trifonova, Ekaterina. "Taxonomy of Bulgarian Triassic foraminifera. I. Familes Psammosphaeridae to Nodosinellidae." Geologica Balcanica 22, no. 1 (1992): 3–50. http://dx.doi.org/10.52321/geolbalc.22.1.3.

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74 species belonging to 31 genera are described. They are distributed in the families: Psammosphaeridae (Psammosphaera, Sorosphaera), Hyppocrepinidae (Hyppocrepina, Hyperamminoides), Ammodiscidae (Ammodiscus, Ammovertella, Tolypammina, Gandinella, Glomospira, Glomospirella, Pilammina, Pilamminella, Rectoglomospira). Hormosinidae (Reophax), Lituotubidae (Lituotuba, Plagioraphe), Lituolidae (Ammobaculites), Placopsilinidae (Placopsilina), Orbitopsellidae (Labyrinthina), Spiroplectamminidae (Spiroplectammina), Pseudobolivinidae (Pseudobolivina), Trochamminidae (Trochammina), Verneuilinidae (Verne
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6

Podobina, V. M. "NEW DATA ON BIOSTRATIGRAPHY AND FORAMINIFERA OF THE ALBIAN IN WEST SIBERIA." Geology and mineral resources of Siberia, no. 2 (2021): 17–23. http://dx.doi.org/10.20403/2078-0575-2021-2-17-23.

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Foraminifera and ostracods similar to the Samotlor ones of the Middle and Upper Albian were found in the section of a newly drilled well in the Severnaya area of West Siberia. Host rocks are marine facies of the Khanty-Mansikian horizon, distributed in the northern paleobiogeographic district of the West Siberian Province. Foraminifera of the Middle Albian in this district are identified as the assemblage with Ammobaculites fragmentarius, Gaudryinopsis filiformis; the Upper Albian ones – the assemblage with Ammotium braunsteini, Verneuilinoides borealis assanoviensis. Layers with these assembl
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7

Podobina, V. M., and G. M. Tatyanin. "NEW DATA ON ALBIAN BIOSTRATIGRAPHY OF THE NORTHERN REGION OF WEST SIBERIA (RELYING ON THE STUDY OF FORAMINIFERA)." Geology and mineral resources of Siberia, no. 1 (2024): 3–9. http://dx.doi.org/10.20403/2078-0575-2024-1-3-9.

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New data on foraminifera from the well section of the western slope of the Yamal Peninsula in West Siberia give an opportunity to clarify the biostratigraphy of the Khanty-Mansi horizon of this region. Two Albian substages have been identified at the Bovanenkovskaya area according to foraminifera assemblages: Ammobaculites fragmentarius, Gaudryinopsis filiformis (middle substage), Ammotium braunsteini, Verneuilinoides borealis assanoviensis (upper substage). Albian assemblages from well sections of the Yuzhno-Russkaya area are given as typical ones for comparison, they are also confined to the
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8

Stelck, C. R., and Dale Leckie. "Foraminiferal inventory and lithologic description of the Lower Cretaceous (Albian) Hulcross Shale, Monkman area, northeastern British Columbia." Canadian Journal of Earth Sciences 25, no. 5 (1988): 793–98. http://dx.doi.org/10.1139/e88-076.

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Correlation of an arenaceous microfauna of 41 species (44 subspecies) from the Hulcross Formation of the Monkman Pass area with that found in the Hulcross Shale on the Peace River has a further corroboration in matching spectra of volcanic ash beds at both localities. The Monkman Pass equivalents of both the basalmost portion and the upper part of the Hulcross beds on the Peace River are in sandy to continental facies. Diatoms are plentiful in the Monkman Pass section in the shaly facies.The foraminiferal genera include Bathysiphon, Thuramminoides, Psammosphaera, Hippocrepina, Saccammina, Reop
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9

Podobina, Vera. "Foraminifera and Late Cenomanian-Turonian biostratigraphy of the northern palaeobiogeographic district of Western Siberia." Geologos 19, no. 3 (2013): 201–27. http://dx.doi.org/10.2478/logos-2013-0013.

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Abstract The study of 114 core samples from seven borehole sections of the Van-Eganskaya area in the central part of Western Siberia yielded sufficient data to investigate the Late Cenomanian-Turonian foraminifers, palaeoenvironments, and the Late Cenomanian-Turonian biostratigraphy of this poorly studied area. Two Late Cenomanian foraminifer zones were established, viz. a (lower) Saccammina micra - Ammomarginulina sibirica Zone and an (upper) Trochammina wetteri tumida - Verneuilinoides kansasensis Zone. They reflect changes in the species composition of the foraminifer assemblages and lithol
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10

Stelck, C. R., and Kory R. Koke. "Foraminiferal zonation of the Viking interval in the Hasler Shale (Albian), northeastern British Columbia." Canadian Journal of Earth Sciences 24, no. 11 (1987): 2254–78. http://dx.doi.org/10.1139/e87-212.

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A dominantly arenaceous foraminiferal fauna of over 33 genera and 65 species was recovered from silty shales in the mid-portion of the Hasler Formation in the upper Albian part of the Fort St. John Group. The assemblages lie stratigraphically below occurrences of Neogastroplites and below the Miliammina manitobensis Zone. The foraminifera come from above the occurrence of Haplophragmoides gigas gigas, although assignment of the beds is to the upper part of the H. gigas Zone.The upper part of the Haplophragmoides gigas Zone may be divided into several subzones above the H. gigas gigas Sub-zone
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11

Mattison, Blair W., and John H. Wall. "Early Cretaceous foraminifera from the Middle and Upper Mannville and Lower Colorado subgroups in the Cold Lake Oil Sands area of east-central Alberta: stratigraphic and paleoenvironmental implications." Canadian Journal of Earth Sciences 30, no. 1 (1993): 94–102. http://dx.doi.org/10.1139/e93-008.

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The regional deposits of the Middle and Upper Mannville subgroups of east-central Alberta are characterized by a series of stacked offshore-paralic successions which represent transgressive–regressive cycles superimposed upon a longer term regressional trend. This trend eventually resulted in the complete withdrawal of the lower Albian Clearwater sea from eastern Alberta and western Saskatchewan. The marine deposits of the Clearwater sea (the Clearwater shales) carry the lower Albian Verneuilinoides cummingensis – Marginulinopsis collinsi foraminiferal assemblage. The next diagnostic foraminif
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12

Haig, David W. "Foraminiferal evidence for inner neritic deposition of Lower Cretaceous (Upper Aptian) radiolarian-rich black shales on the Western Australian margin." Journal of Micropalaeontology 24, no. 1 (2005): 55–75. http://dx.doi.org/10.1144/jm.24.1.55.

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Abstract. Diverse foraminifera, Lingula-like brachiopods and the geological setting indicate that Aptian radiolarian-rich black shales forming the Windalia Radiolarite were deposited at water depths probably less than 40 m in the Southern Carnarvon Basin. Elsewhere in Australia, coeval radiolarian-rich deposits are widespread in other western-margin basins and in vast interior basins. The organic-rich mudstones containing the radiolaria include the foraminiferal Ammobaculites Association, a sparse benthic macrofauna and kerogens of mainly terrestrial plant origin. The deposits suggest that the
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13

Tyagi, Aditya, A. Guy Plint, and David H. McNeil. "Correlation of physical surfaces, bentonites, and biozones in the Cretaceous Colorado Group from the Alberta Foothills to southwest Saskatchewan, and a revision of the Belle Fourche - Second White Specks formational boundary." Canadian Journal of Earth Sciences 44, no. 7 (2007): 871–88. http://dx.doi.org/10.1139/e07-004.

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New allostratigraphic correlations in west-central Alberta show that flooding surfaces in the Sunkay and basal Vimy members of the Blackstone Formation can be traced eastward from Burnt Timber Creek for >500 km to western Saskatchewan, and for 350 km northward into the Dunvegan and Kaskapau formations. At Burnt Timber Creek, a Miliammina manitobensis microfauna in the lowest 1 m of the Sunkay Member indicates equivalence to the Westgate Formation, and an overlying 70 cm conglomerate is correlative with the Fish Scales Formation. Overlying mudstones contain foraminifera of the Verneuilinoide
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14

Stelck, C. R. "Foraminifera of the middle to upper Albian transition (Lower Cretaceous), northeastern British Columbia." Canadian Journal of Earth Sciences 28, no. 4 (1991): 561–80. http://dx.doi.org/10.1139/e91-050.

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Throughout Alberta and Saskatchewan, the upper Albian Substage lies unconformably on subjacent beds. However, on the Peace River in northeastern British Columbia, 32 km below Hudson Hope, a silty shale outcrop shows uninterrupted marine deposition across the Middle–Upper Albian substage boundary. An arenaceous foraminiferal fauna of 21 genera and 57 sub-generic taxa is illustrated from this outcrop of the Hasler Shale. The collections come from above the previously illustrated microfauna of the Stelckiceras liardense Zone and below the occurrence of Haplophragmoides gigas gigas and provide a s
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15

MCNEIL, DAVID H., and JAMES A. MACEACHERN. "BENTHIC FORAMINIFERAL MORPHOGROUPS AND TRACE FOSSILS FROM ALBIAN SHALLOW-MARINE MUDSTONE FACIES OF THE VIKING FORMATION, WESTERN INTERIOR SEAWAY, CANADA." Palaios 38, no. 6 (2023): 264–80. http://dx.doi.org/10.2110/palo.2022.041.

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ABSTRACT This study assesses the foraminiferal morphogroup concept as a quantitative tool for interpreting environments of deposition in the geological record. This was achieved by first establishing a solid paleoenvironmental framework based on assessment of trace fossils (Zoophycos, Cruziana, and Phycosiphon ichnofacies, and the unnamed brackish-water association), sedimentology, and facies analysis of shallow-marine siliciclastic units of the upper Albian Viking Formation of the Western Interior Seaway, Canada. Foraminiferal morphogroups were integrated into a framework of six well-defined
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16

Sousa, Francisco Diogo Rocha, Lourdes Maria Abdu Elmoor-Loureiro, and Sandro Santos. "Position of the dentifera-group in the Coronatella-branch and its relocation to a new genus: Magnospina gen. n. (Crustacea, Chydoridae, Aloninae)." ZooKeys 586 (May 4, 2016): 95–119. https://doi.org/10.3897/zookeys.586.8209.

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Magnospina gen. n. was created to relocate species of the dentifera-group from Alona sensu lato (Crustacea: Cladocera) and include Magnospina dentifera comb. n. and Magnospina siamensis comb. n. The synapomorphies of the Magnospina gen. n. are (1) basal spines longer than 2/3 of the postabdominal claw, (2) presence of 1–4 large denticles, broad at their bases, protruding downwards, without setules between them. Morphological traits such as habitus, rostrum and postabdomen shape, armature of IDL setae, number of setae on the exopod of limb III are also important in the distinction between Magno
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17

GRĂDINARU, EUGEN, MIHA MARINŠEK, LIDIJA KORAT, and LUKA GALE. "USE OF X-RAY MICRO-COMPUTED TOMOGRAPHY ON SELECTED UPPER TRIASSIC (RHAETIAN) FORAMINIFERA FROM THE WESTERN BLACK SEA SHELF, OFFSHORE ROMANIA." RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA 128, no. 1 (2022). http://dx.doi.org/10.54103/2039-4942/14283.

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Upper Triassic (Rhaetian) foraminifera belonging to the species Glomospira charoides (Jones & Parker), Gaudryinopsis kelleri (Tappan), G. triadica (Kristan-Tollmann), Ammobaculites zlambachensis Kristan-Tollmann, Verneuilinoides racema (Trifonova), and Trochammina cf. jaunensis Brönnimann & Page were investigated using X-ray micro-computed tomography. Foraminifera were recovered from the drill core CM31 of the 817 Lebăda Vest borehole, located off the coast of Romania on the western Black Sea shelf, from depths of 2623 m to 2625 m. Tomographic data was used to generate digital models,
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