Hedstroemia

Hedstroemia; Temporal range: Llandovery–Upper Devonian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Bacteria
Kingdom:	Bacillati
Phylum:	Cyanobacteriota
Class:	Cyanophyceae
Order:	Nostocales
Family:	Rivulariaceae
Genus:	† Hedstroemia ; A. Rothpletz, 1913
Type species
	†Hedstroemia halimedoidea; A. Rothpletz, 1913
Species
	†Hedstroemia bifilosa A. Rothpletz, 1913 ; †Hedstroemia halimedoidea A. Rothpletz, 1913 ;

Last updated July 11, 2025

The extinct genus Hedstroemia was once thought to be a rivulariacean cyanobacterium.^{[ needs update? ]} It forms oval blobs composed of sinuous tubes that have rounded outlines and occurs in conjunction with Solenopora .^[3]

Hedstroemia was formerly assigned to the now obsolete taxon porostromata.^[4] In 2020, the genus was assigned to the cyanobacteria order Nostocales.^[5]

References

↑ "Fossilworks: Hedstroemia". paleodb.org. Retrieved 7 April 2018.
↑ Liu, Lijing; Wu, Yasheng; Yang, Haijun; Riding, Robert (2016). "Ordovician calcified cyanobacteria and associated microfossils from the Tarim Basin, Northwest China: systematics and significance" (PDF). Journal of Systematic Palaeontology . 14 (3): 183–210. doi:10.1080/14772019.2015.1030128. S2CID 129684955.
↑ Riding, R.; Watts, N. (1981). "Silurian algal reef crest in Gotland". Naturwissenschaften. 68 (2): 91. Bibcode:1981NW.....68...91R. doi:10.1007/BF01047229. S2CID 8834679.
↑ Monty, C. L. (1981). "Spongiostromate vs. Porostromate Stromatolites and Oncolites". In Monty, Claude (ed.). Phanerozoic Stromatolites. Berlin, Heidelberg: Springer. pp. 1–4. doi:10.1007/978-3-642-67913-1_1. ISBN 978-3-642-67913-1.
↑ Lijing Liu; Yasheng Wu; Hongping Bao; Hongxia Jiang; Lijing Zheng; Yanlong Chen (2020). "Diversity and systematics of Middle-Late Ordovician calcified cyanobacteria and associated microfossils from Ordos Basin, North China". Journal of Paleontology. 95: 1–23. doi:10.1017/jpa.2020.82. S2CID 226349226.

Guiry, M.D.; Guiry, G.M. (2008). "Hedstroemia". AlgaeBase . World-wide electronic publication, National University of Ireland, Galway. Retrieved 2009-06-24.

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[1] "Fossilworks: Hedstroemia". paleodb.org. Retrieved 7 April 2018.

[Liu2016-2] Liu, Lijing; Wu, Yasheng; Yang, Haijun; Riding, Robert (2016). "Ordovician calcified cyanobacteria and associated microfossils from the Tarim Basin, Northwest China: systematics and significance" (PDF). Journal of Systematic Palaeontology . 14 (3): 183–210. doi:10.1080/14772019.2015.1030128. S2CID 129684955.

[Riding&Watts-3] Riding, R.; Watts, N. (1981). "Silurian algal reef crest in Gotland". Naturwissenschaften. 68 (2): 91. Bibcode:1981NW.....68...91R. doi:10.1007/BF01047229. S2CID 8834679.

[4] Monty, C. L. (1981). "Spongiostromate vs. Porostromate Stromatolites and Oncolites". In Monty, Claude (ed.). Phanerozoic Stromatolites. Berlin, Heidelberg: Springer. pp. 1–4. doi:10.1007/978-3-642-67913-1_1. ISBN 978-3-642-67913-1.

[Liu2020-5] Lijing Liu; Yasheng Wu; Hongping Bao; Hongxia Jiang; Lijing Zheng; Yanlong Chen (2020). "Diversity and systematics of Middle-Late Ordovician calcified cyanobacteria and associated microfossils from Ordos Basin, North China". Journal of Paleontology. 95: 1–23. doi:10.1017/jpa.2020.82. S2CID 226349226.

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