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The database is hosted by Kiel University
and is established by Magda Wieckowska-
Lüth, Wiebke Kirleis and Kay Schmütz,
Institute for Prehistoric and Protohistoric Archaeology.

© Wieckowska-Lüth/Kirleis/Schmütz 2020

Type: UG-1234

Category: Unknown

Taxonomical identification: No information

First publication: Gelorini, V., Verbeken, A., van Geel, B., Cocqyt, C. and Vershuren, D. (2011) Modern non-pollen palynomorphs from East African lake sediments. Review of Palaeobotany and Palynology 164, 143–173

Other publication/s: Neustupa, J., Št'astný, J. and Hodač, L. (2008) Temperature-related phenotypic plasticity in the green microalga Micrasterias rotata. Aquatic Microbial Ecology 51, 77–86

Description: Globose, unicellular, 40 × 38 µm, pale yellow to yellow, smooth, consisting of 2 intricately lobed semi-cells with concave margins between them and a star-like pattern of projections pointing towards the center. This African morphotype superficially resembles Micrasterias (Chlorophyceae, Desmidiales) which is distinctly larger and of which the semi-cells are more complex and intricately lobed. However, experiments show that the size of some Micrasterias species, such as Micrasterias rotata Ralfs, consistently decreases at high temperatures, and the morphology is less elaborate than in cells grown at low temperature (Neustupa et al., 2008). This NPP type may represent one or more tropical species of Micrasterias, but identification is severely hampered by the lack of a centrally placed nucleus, a typical feature of Desmidiaceae.

(Sub-) Fossil occurence: No information

Co-occurence: No information

Modern occurence: No information

Palaeoenvironmental indication: No information