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Closterium mosbruggeri sp. nov.: a new fossil species from the middle Miocene of Northwest Bulgaria

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Abstract

A fossil vegetative cell of desmidian algae is described as a new species—Closterium mosbruggeri sp. nov. It occurs in middle Miocene (late Serravallian) sediments from Northwest Bulgaria. The present record of Closterium is the first fossil record of this genus in vegetative stage in Europe and the third in the world. The fossil species is characterised by a single, long, straight cell. The cell wall is thin with a smooth surface. The cell is flattened forming a long, frond-like shape tapering at both ends. Closterium is a green alga belonging to the Closteriaceae family, occurring exclusively in freshwater environments.

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Acknowledgements

We acknowledge critical remarks and valuable suggestions of the reviewers (Prof. Maya Stoyneva-Gärtner, and two anonymous reviewers). Our sincere gratitude goes to Dr. Torsten Utescher, who as a guest editor helped us improve the manuscript and to all guest editors, Angela Bruch, Dieter Uhl, and Torsten Utescher for inviting us to contribute to this special issue.

Funding

This work was supported by the National Science Program “Environmental Protection and Reduction of Risks of Adverse Events and Natural Disasters”, approved by the Resolution of the Council of Ministers № 577/17.08.2018 and supported by the Ministry of Education and Science (MES) of Bulgaria (Agreement № D01- 230/06.12.2018 and № DO1-322/18.12.2019). It is a contribution to the International Network Programe NECLIME (www.neclime.de).

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  1. Bulgarian Academy of Sciences, Institute of Biodiversity and Ecosystem Research, Acad. G. Bonchev Str. 23, 1113, Sofia, Bulgaria

    Dimiter Ivanov & Detelina Belkinova

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  1. Dimiter Ivanov
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  2. Detelina Belkinova
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All authors read and approved final manuscript.

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Correspondence to Dimiter Ivanov.

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This article is a contribution to the special issue “Palaeobotanical contributions in honour of Volker Mosbrugger”

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Ivanov, D., Belkinova, D. Closterium mosbruggeri sp. nov.: a new fossil species from the middle Miocene of Northwest Bulgaria. Palaeobio Palaeoenv 101, 69–74 (2021). https://doi.org/10.1007/s12549-020-00476-7

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  • DOI: https://doi.org/10.1007/s12549-020-00476-7

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