Clavulinoides trilatera
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
Clavulinoides trilatera (Cushman, 1926)
Pl. 1, figs. 5–7
Clavulina trilatera Cushman, 1926, p. 588, pl. 17, fig. 2.
Clavulina trilatera var. aspera Cushman, 1926, p. 589, pl. 17, fig. 3; Cushman, 1946, p. 38, pl. 9, figs. 10–16.
Clavulinoides trilatera Mello, 1969, p. 50, pl. 1, fig. 3a–b.
Description: The test wall is agglutinated and well cemented. The test is triangular in section, tapering towards the initial end and broadening towards the apertural end. The early stage is triserial, becoming uniserial and angular as chambers are added. The chambers enlarge as added, with flush sutures. The aperture is rounded, dentate and terminal.
Life strategy: This species is infaunal (Ali, 2015) at slope to abyssal depths (Alegret et al., 2002; Holbourn et al., 2013).
Remarks: Specimens from this species are large, measuring up to 0.5x 2 mm. Few specimens have been found in core 2670, forming a minor component (<5%) of the total foraminifera composition.
Regional occurrence: This study records C. trilatera to occur in middle Miocene sediments on the Namibian outer continental shelf, south of the Kunene River mouth.
Notes
Files
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Pseudogaudryinidae
- Genus
- Clavulinoides
- Kingdom
- Chromista
- Order
- Textulariida
- Phylum
- Foraminifera
- Scientific name authorship
- Cushman
- Species
- trilatera
- Taxon rank
- species
- Taxonomic concept label
- Clavulinoides trilatera (Cushman, 1926) sec. Bergh & Compton, 2022
References
- Cushman, J. A. (1946) Upper Cretaceous foraminifera of the gulf coastal region of the United States and adjacent areas. United States Geological Survey Professional Paper, 206, 1 - 241. https: // doi. org / 10.3133 / pp 206
- Mello, J. F. (1969) Foraminifera and stratigraphy of the upper part of the Pierre Shale and lower part of the Fox Hills Sandstone (Cretaceous), north-central South Dakota. United States Geological Survey Professional Paper, 611, 1 - 121. https: // doi. org / 10.3133 / pp 611
- Ali, M. Y. (2015) Evaluation of foraminifera and calcareous nanofossils changes across the Late Paleocene / Early Eocene transition at Nag El-Quda section, Upper Nile Valley, Egypt. Geosciences Journal, 19, 641 - 654. https: // doi. org / 10.1007 / s 12303 - 015 - 0004 - 7
- Alegret, L., Arenillas, I., Arz, J. A., Liesa, C., Melendez, A., Molina, E., Soria, A. R. & Thomas, E. (2002) The Cretaceous / Tertiary boundary: sedimentology and micropalaeontology at El Mulato section, NE Mexico. Terra Nova, 14, 330 - 336. https: // doi. org / 10.1046 / j. 1365 - 3121.2002.00425. x
- Holbourn, A., Henderson, A. S. & MacLeod, N. (2013) Atlas of Benthic Foraminifera. Wiley-Blackwell, Oxford, 654 pp. https: // doi. org / 10.1002 / 9781118452493