Alveovalvulinidae, n. fam., and Neogene Diversification of Agglutinated Foraminifers with Inner Structures

Sieglie, George A.; Fleisher, Robert L.; Baker, Mary

doi:10.2307/1485630

Cited by 10 publications

(8 citation statements)

References 16 publications

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“…The families Alveovalvulinidae and Liebusellidae evolved from a trochospiral agglutinated foraminifera with no inner structures. The flexible characteristic of the alveovalvulinid test contrasts, however, with the strong, thick-walled liebusellid test, suggesting that they evolved separately (Seiglie et al, 1986). …”

Section: The Textulariides Of the Neogenementioning

confidence: 92%

“…However, a major diversification occurred in the Miocene with new forms appearing in the Early to Middle Miocene. These forms were characterised by inner structures consisting of alveoli conjoined through tubiform connections (Seiglie et al, 1986) and they include the Alveovalvulinidae, the Globotextularidae (see Chapter 6) the Chrysalidinidae (see Chapter 6) and the Pavonitinidae, the Textulariellidae and the Cyclamminidae (see Chapter 6). The latter are relict from the Cretaceous and continued to survive until the present day.…”

Section: The Textulariides Of the Neogenementioning

confidence: 99%

“…On the other hand, the Lower to Middle Miocene saw the diversification of the agglutinated pavonitinids, which had elongate triserial to biserial tests with complicated inner structures. Unlike the rest of the larger benthic foraminiferal assemblages, these assemblages occupy chiefly bathyal to abyssal sediments of tropical waters and constitute 40% of the agglutinated taxa in Neogene tropical waters (Seiglie et al, 1986).…”

Section: Palaeoecology Of the Neogene Larger Foraminiferamentioning

confidence: 99%

“…These foraminifera had structures, such as alveoles, and used to occupy shallow tropical waters of Tethys in the Early Jurassic to Cenomanian, with a brief resurgence of one of these groups (Coskinolina, Lituonella and Dictyoconus) in shallow tropical environments of the Early and Middle Eocene. In the Early Miocene, and in response to environmental stress in the Caribbean, they moved their habitats to deeper environments where they occurred in abyssal muds, poor in oxygen (Seiglie et al, 1986). In the Middle Miocene, they were mainly found in Central America (75%) with only a few occurring in West Africa and Western Mediterranean (12%), and only one genus occurring in both provinces (Liebusella).…”

Section: General Characteristics Of the Distribution Of Neogene Largementioning

confidence: 99%

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Evolution and Geological Significance of Larger Benthic Foraminifera

BouDagher‐Fadel¹

2008

Developments in Palaeontology and Stratigraphy

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Section: The Textulariides Of the Neogenementioning

confidence: 92%

Section: The Textulariides Of the Neogenementioning

confidence: 99%

Section: Palaeoecology Of the Neogene Larger Foraminiferamentioning

confidence: 99%

Section: General Characteristics Of the Distribution Of Neogene Largementioning

confidence: 99%

See 2 more Smart Citations

Evolution and Geological Significance of Larger Benthic Foraminifera

BouDagher‐Fadel¹

2008

Developments in Palaeontology and Stratigraphy

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“…(3) Offshore West Africa West African Oligocene-Miocene agglutinated foraminiferal studies by Seiglie and Baker (1983) and Seiglie et al (1986) have brought to focus the importance of those taxa with inner structures in biostratigraphic and paleoenvironmental studies. Haman et al (1993) (In: Preece et.…”

Section: Comparison With Other Oligocene-miocene Agglutinated Faunasmentioning

confidence: 99%

Miocene deep water agglutinated foraminifera from offshore Krishna-Godavari Basin, India

Govindan¹

2004

Micropaleontology

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The Krishna Godavari Basin is located in the East Coast Indian Peninsula containing 5 to 7 km of Cretaceous through Cenozoic terrigenous clastic sediments. The Miocene-Pliocene section in the offshore is known as the Ravva Formation, a major argillaceous facies with sandstone beds from which oil and gas are being produced. In this sequence, some cutting samples studied from four offshore wells were found to be rich in agglutinated benthic foraminifera, while planktic foraminifera were absent at these levels. These samples were studied in much detail for agglutinated foraminifera. A total of fifty-nine agglutinated foraminiferal species belonging to thirty-five genera have been identified. Two new species, Alveolophragmium indicum Govindan n. sp and Liebusella krishna Govindan n. sp., are described. All these species are reported for the first time from this region. The agglutinated benthic foraminiferal taxa bear close resemblance to those of Miocene agglutinated foraminifera assemblages reported from South Trinidad, the Falcon Basin of Venezuela, and offshore West Africa. The present report of alveolar genera, Alveovalvulina, Alveovalvulinella and Guppyella, and compressed, inner partitioned alveolar genera Pavonitina and Spiropsammia, together with other genera having complex reticulate inner structure as Cyclammina, Reticulophragmium and Alveolophragmium in this region are of great importance for the evaluation of biostratigraphy, paleoecology, paleobiogeography and burial history. Paleoecological analysis reveals three agglutinated foraminiferal biofacies/groupings, which characterize beyond outer shelf through bathyal slope (500 to 1500m) depth regimes in an oxygen minimum deep water setting for the deposition of these turbidite/ debris flow sediments.A major marine transgression at the close of the Oligocene probably caused a moderately rich, more uniform distribution of deep water agglutinated species over this deep basin. Additional observations on the agglutinated benthic assemblage such as deformation of the tests, coloration of the tests and stratigraphic markers are also dealt with briefly.

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Agglutinated Foraminifera from the Palaeogene of the North Sea

Charnock

Jones²

1990

Paleoecology, Biostratigraphy, Paleoceanography and Taxonomy of Agglutinated Foraminifera

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Alveovalvulinidae, n. fam., and Neogene Diversification of Agglutinated Foraminifers with Inner Structures

Cited by 10 publications

References 16 publications

Evolution and Geological Significance of Larger Benthic Foraminifera

Evolution and Geological Significance of Larger Benthic Foraminifera

Miocene deep water agglutinated foraminifera from offshore Krishna-Godavari Basin, India

Agglutinated Foraminifera from the Palaeogene of the North Sea

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