Spiroplectammina undetermined
Creators
- 1. Marine Research Institute and Department of Geological Sciences, University of Cape Town, Private Bag X 3, Rondebosch, 7701, South Africa. & Department of Environmental and Geographical Sciences, University of Cape Town, Private Bag X 3, Rondebosch, 7701, South Africa; & Invertebrate palaeontology and Geology, Iziko South African Museum, P. O. Box 61, Cape Town 8000, South Africa. john. compton @ uct. ac. za; https: // orcid. org / 0000 - 0002 - 0765 - 4141
- 2. Marine Research Institute and Department of Geological Sciences, University of Cape Town, Private Bag X 3, Rondebosch, 7701, South Africa.
Description
Spiroplectammina sp. Pl. 1, figs. 1a–b
Description: The chamber walls are agglutinated and well cemented. The test is flattened and broad, with the margins sub-rounded. In cross section, the test is trapezoid in shape. Chambers are initially planispiral, becoming biserial, with flush sutures. The arched aperture is situated along the margin of the terminal chamber.
Remarks: Only a few tests were identified (not exceeding 5% in samples) in core 2670, measuring up to 0.4x 0.6 mm. The tests are commonly broken or have predatory holes.
Life strategy: Species of the genus Spiroplectammina are infaunal in low oxygen environments (Hallam & Wignall, 1997) of increased food availability (Alegret & Thomas, 2007).
Regional occurrence: This species is recorded to occur in the middle Miocene sediments of the Namibian outer continental shelf, south of the Kunene River mouth.
Notes
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Linked records
Additional details
Identifiers
Related works
- Is part of
- Journal article: 10.11646/zootaxa.5091.1.1 (DOI)
- Journal article: http://zenodo.org/record/5840434 (URL)
- Journal article: http://publication.plazi.org/id/E54EFFC2FFD3932E7F5E9B0CFFC4FF88 (URL)
- Journal article: http://zoobank.org/ABC8AF70-F691-4D07-8F20-70934642C8BC (URL)
- Is source of
- https://sibils.text-analytics.ch/search/collections/plazi/197787BAFFD6932B7FC9983BFD19FB56 (URL)
Biodiversity
- Family
- Spiroplectamminidae
- Genus
- Spiroplectammina
- Kingdom
- Chromista
- Order
- Lituolida
- Phylum
- Foraminifera
- Species
- undetermined
- Taxon rank
- species
References
- Hallam, A. & Wignall, P. B. (1997) Mass extinctions and their aftermath. Oxford University Press, Oxford, 328 pp.
- Alegret, L. & Thomas, E. (2007) Deep-Sea environments across the Cretaceous / Paleogene boundary in the eastern South Atlantic Ocean (ODP Leg 208, Walvis Ridge). Marine Micropalaeontology, 64, 1 - 17. https: // doi. org / 10.1016 / j. marmicro. 2006.12.003