CATALOG OF ORIGINAL DESCRIPTIONS: Campylacantha cladophora Jørgensen 1905

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.


Higher levels: rads_cat -> C -> Campylacantha -> Campylacantha cladophora
Other pages this level: C. cladophora

Campylacantha cladophora

Citation: Campylacantha cladophora Jørgensen 1905
Rank: species
Type specimens: pl.12, figs.47a-c
Type repository: University of Bergen, Norway
Described on page(s) : p.129
Family (traditional): Plagiacanthidae
Family (modern): Plagiacanthidae

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Current identification:


Original Description
The sagittal, basal spine is best developed, very strong, long, strongly bent, gradually narrowing off into a long fine point, like all the stronger main spines and branches three-edged. One edge is dorsal, the others lateral. On these three edges, there are strong, expanded, narrow pointed branches, several in a row along the same edge, rather scattered and not clearly forming verticils when compared to the branches on the other edges. The branches become shorter towards the end of the main spines. The larger branches are in their turn furnished with similar squarrose branches. The basal, lateral spines are also strongly developed, although not quite so much so as the sagittal, dorsal one, in other respects corresponding precisely in form and arrangement of branches. The apical spine is much less developed, having only a verticil of three branches on the corresponding place to the verticil of Plagiacantha, outside this being thin and unbranched.
The ventral, sagittal spine is thin and unbranched, almost straight, pointing obliquely downwards between the lateral spines and being somewhat shorter than these. In addition, in well developed forms, there appears to be two strong, lateral arched branches extending from the basal, dorsal spine at the base of the apical spine. These arched branches form a pair of secondary, lateral spines, lr and ll, in form and arrangement of branches corresponding to the primary, lateral spines, only less developed. In those individuals where a smaller numbers of secondary spines were developed, they were not visible. But it must be remarked that the species is very brittle, so that the branches are easily broken off. Distinguishing characters (rw): Rare, always in small numbers, only in deep water samples.

References:

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


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Campylacantha cladophora compiled by the radiolaria@mikrotax project team viewed: 21-1-2021

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