Plectofrondicularia undefined-c
Authors/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
Plectofrondicularia sp. C
Pl. 2, fig. 3
Description: The test wall is calcareous. The test is flat, with a thin keeled periphery. The test slightly broadens midway, before narrowing again towards the apertural end. The sides of the test slightly widen and curve, where it narrows towards the apertural end. The initial stage protrudes more than the later stage chambers. Costae extend from the initial end to midway of the test.
Remarks: The test is more rounded than Plectofrondicularia spp. A and B. The tests are large (up to 0.5 mm in width and 3 mm in length), forming trace abundances (<1%) of the total foraminiferal assemblage.
Life strategy: Species of the genus Plectofrondicularia have been reported to be infaunal under suboxic conditions (Pezelj et al., 2013 and references therein).
Regional occurrence: This species occurs in middle Miocene sediments on the northern Namibian outer continental shelf, south of the Kunene River mouth (this study). Wefer et al. (1998) recorded minor occurrences of Plectofrondicularia spp. in Miocene to Pleistocene-aged sediments along the western continental slope of southern Africa.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Kingdom
- Chromista
- Phylum
- Foraminifera
- Order
- Polymorphinida
- Family
- Plectofrondiculariidae
- Genus
- Plectofrondicularia
- Species
- undefined-c
- Taxon rank
- species
References
- Pezelj, D, Mandic, O. & Coric, S. (2013) Paleoenvironmental dynamics in the southern Pannonian Basin during initial Middle Miocene marine flooding. Geologica Carpathica, 64, 81 - 100.
- Wefer, G., Berger, W. H., Richter, C., Adams, D. D., Anderon, L. D., Andreasen, D. J., Bruchert, V., Cambray, H., Christensen, B. A., Frost, G. M., Giraudeau, J., Gorgas, T. J., Hermelin, O., Lange, C. B., Laser, B., Lin, H-L., Maslin, M., Meyers, P. A., Motoyama, I., Murray, R. W., Pato, D., Perez, M. E., Pufahl, P. K., Spiess, V., Vidal. L., Wigley, R. & Yamazaki, T. (1998) Proceedings of the Ocean Drilling Program, Initial Reports. Vol. 175. Ocean Drilling Program, College Station, Texas, 577 pp.