Taxonomy of Middle Miocene foraminifera from the northern Namibian continental shelf
Author
Bergh, Eugene W.
0000-0002-0765-4141
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
john.compton@uct.ac.za
Author
Compton, John S.
Marine Research Institute and Department of Geological Sciences, University of Cape Town, Private Bag X 3, Rondebosch, 7701, South Africa.
text
Zootaxa
2022
2022-01-12
5091
1
1
55
journal article
2636
10.11646/zootaxa.5091.1.1
51b42715-ddb1-4b4a-aad4-8be0f600a287
1175-5326
5840434
ABC8AF70-F691-4D07-8F20-70934642C8BC
Plectofrondicularia
sp. A
Pl. 1, fig. 21
Description:
The test wall is calcareous. The test is flat, with a keeled periphery and pronounced proloculus, with later uniserial chambers extending in an angular arched chevron-shape towards the terminal chamber. The test widens and curves where it narrows towards the apertural end. The sutures are limbate and the aperture terminal, radiate with projecting laminae fusing centrally.
Remarks:
The tests are mostly broken and are moderately large in size (up to
0.6 mm
in width and
1 mm
in length), in trace abundances (<1%).
Life strategy
: Species of the genus
Plectofrondicularia
are infaunal and adapted to suboxic conditions (
Pezelj
et al
., 2013
and references therein).
Regional occurrence:
This species is recorded in middle Miocene sediments from the
northern Namibian
outer continental shelf, south of the
Kunene
River
mouth (this study)
.