Ceratospyris hyperborea

Classification: rads_cenozoic -> Trissocyclidae -> Acanthodesmiidae -> Ceratospyris -> Ceratospyris hyperborea
Sister taxa: C. articulata, C. borealis, C. clavata, C. echinus, C. hyperborea, C. sp.


Citation: Ceratospyris hyperborea Jørgensen 1905
Rank: species
Basionym: Ceratospyris hyperborea
Taxonomic discussion: Jorgensen 1905

Catalog entries: Ceratospyris hyperborea

Original description: I have only seen very few individuals of this species. Its structure seems to be of precisely the same type as that of Dictyocircus clathratus, only that, on both sides of the sagittal ring, there is a further development of the network, which has become two complete domes, one on each side. The primary pores (nearest the sagittal ring) are polygonal the others being irregular roundish and oblong and varying considerably in size. The separating walls are strong, with here and there narrow, protruding points which form obliquely diverging narrow spines. There is also a rather plentiful number of similar byspines. All the spines are little prominent, to ¼ - ½ of the diameter of the sagittal ring.

Very rare and only single. Distinguishing characters (rw): The species does not appear to be identical to any of Haeckel’s.


Biogeography and Palaeobiology

Biostratigraphic distribution

Geological Range:
Last occurrence (top): Extant Data source: Lazarus et al. 2015 - "R age group"
First occurrence (base): within Quaternary Period (0.00-2.59Ma, base in Gelasian stage). Data source: Lazarus et al. 2015 - "R age group"

Plot of occurrence data:


Jørgensen, E (1905). The protist plankton and diatoms in bottom samples: Radiolaria. In, Nordgaard (ed.) Hydrographical and biological investigation in Norwegian Fjord. 49-151. gs


Ceratospyris hyperborea compiled by the radiolaria@mikrotax project team viewed: 31-10-2020

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Short stable page link: http://mikrotax.org/radiolaria/index.php?id=203517 Go to Archive.is to create a permanent copy of this page - citation notes

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