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Nannotax3 - ntax_non_cocco - Stephanocha speculum Nannotax3 - ntax_non_cocco - Stephanocha speculum

Stephanocha speculum


Classification: ntax_non_cocco -> Silicoflagellates -> Stephanocha -> Stephanocha speculum
Sister taxa: S. speculum

Distinguishing features:
Parent taxon (Stephanocha):
This taxon: 6-sided with robust apical ring

Taxonomy:

Citation: Stephanocha speculum (Ehrenberg 1837) Jordan & McCartney 2015
Taxonomic rank: species
Basionym: Dictyocha speculum Ehrenberg 1837
Synonyms: Distephanus speculum (Ehrenberg 1837) Haeckel 1887

Catalog entries: <. speculum Ehrenberg 1837 [no catalog entry yet]

Distinguishing features:
Parent taxon (Stephanocha):
This taxon: 6-sided with robust apical ring

Geological Range:
Last occurrence (top): Extant. Data source: present in the plankton
First occurrence (base): within Oligocene Epoch (23.03-33.89Ma, base in Rupelian stage). Data source: Perch-Nielsen 1985

References:

Ehrenberg, C. G. (1837). Eine briefliche Nachricht des Hrn. Agassiz in Neuchatel über den ebenfalls aus mikroskopischen Kiesel-Organismen gebildeten Polirschiefer von Oran in Afrika, Berlin, Ber. Verh. K. Preuss. Akad. Wiss, pp. 59-61. Bericht uber die zu Bekanntmachung geeigneten Verhandlungen der Koniglichen Preussische Akademie der Wissenschaften zu Berlin. 59-61. gs

Jordan, R. W. & McCartney, K. (2015). Stephanocha nom. nov., a replacement name for the illegitimate silicoflagellate genus Distephanus (Dictyochophyceae). Phytotaxa. 201(3): 177-187. gs

Perch-Nielsen, K. (1985). Silicoflagellates. In, Bolli, H. M., Saunders, J. B. & Perch-Nielsen, K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge (2): 811-846. gs

Missing or ambiguous references: Haeckel 1887;


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Stephanocha speculum compiled by Jeremy R. Young viewed: 17-4-2025

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Short stable page link: https://mikrotax.org/Nannotax3/index.php?id=20459 Go to Archive.is to create a permanent copy of this page - citation notes
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Comments (4)

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Here is a link to Ehrenberg 1837 (pp 59-61): https://download.digitale-sammlungen.de/pdf/17437768418888bsb10533186.pdf

ref. Ehrenberg, C. G. (1837): Eine briefliche Nachricht des Hrn. Agassiz in Neuchatel über den ebenfalls aus mikroskopischen Kiesel-Organismen gebildeten Polirschiefer von Oran in Afrika, Berlin, Ber. Verh. K. Preuss. Akad. Wiss, pp. 59-61.

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Thank you Ines. I have added that to the bibliography and will upload the PDF shortly, also good to know that journal is now accessible

Jeremy

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It is stephanocha instead of stephanoca, probably just mistake in typing.
I'm so happy to see that silicoflagellate taxonomy is finally going to be done correctly.
Nice work and best wishes to authors.
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In nomenclature it should be Dictyocha speculum Ehrenberg 1839. Geological range is the same as D. fibula.