Karreriella siphonella
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
Karreriella siphonella (Reuss, 1851) Pl. 1, figs. 2–3
Gaudryina siphonella Reuss, 1851, p.78, pl.5, figs. 40a, b; 42a, b.
Karreriella siphonella King, 1989, p. 456, pl. 9.2, fig. 3; Hemleben et al., 1990, p. 194, pl. 12, fig. 17–18; pl. 25, fig. 8.
Description: The chamber walls are agglutinated. The test is elongate, rounded in cross-section and trochospiral in the early stage, reducing to triserial and biserial in the adult stage. The chambers enlarge toward the terminal end. The sutures are depressed and the aperture is terminal and slit-like.
Remarks: This species has a relatively large test size of up to 0.2x 1.5 mm. Specimens of this species form a major component of the agglutinate foraminifera in this study in all three cores, but a minor component (<5%) of the total benthic foraminiferal assemblage.
Life strategy: The genus Karreriella is epifaunal, unattached and prefers muddy sediments on the outer shelf to slope (Murray, 2006).
Global stratigraphic range: Karreriella occurs from the Eocene to Recent (Loeblich & Tappan, 1988).
Regional occurrence: This species is documented to occur in middle Miocene sediments of the Namibian outer continental shelf, south of the Kunene River mouth (this study).
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Eggerellidae
- Genus
- Karreriella
- Kingdom
- Chromista
- Order
- Textulariida
- Phylum
- Foraminifera
- Scientific name authorship
- Reuss
- Species
- siphonella
- Taxon rank
- species
- Taxonomic concept label
- Karreriella siphonella (Reuss, 1851) sec. Bergh & Compton, 2022
References
- Reuss, A. E. (1851) Die fossilen Foraminiferen, Bryozoen und Anthozoen von Oberburg in Steiermark. Ein Beitrag zur fauna der oberen Nummulitenschichteh. Sitzungsberichte der Akademie der Wissenschaften, 48, 49 - 92.
- King, C. (1989) Cenozoic of the North Sea. In: Jenkins, D. G. & Murray, J. W. (Eds.), Stratigraphical Atlas of Fossil Foraminifera. Ellis Horwood Ltd., Chichester, pp. 418 - 489.
- Hemleben, C., Spindler, M. & Anderson, O. R. (1990) Modern Planktonic Foraminifera. Springer Science and Business Media, New York, 386 pp. https: // doi. org / 10.1007 / 978 - 1 - 4612 - 3544 - 6
- Murray, J. W. (2006) Ecology and Applications of Benthic Foraminifera. Cambridge University Press, Cambridge, 426 pp. https: // doi. org / 10.1017 / CBO 9780511535529
- Loeblich, A. R. & Tappan, H. (1988) Foraminiferal Genera and their Classification. Van Nostrand Reinhold, New York, 970 pp. https: // doi. org / 10.1007 / 978 - 1 - 4899 - 5760 - 3