Hi, indeed it looks very much like an ebridian. Rather similar things are illustrated by Loeblich et al. 1968 (Index of Silicos and Ebridians, GSA Memoir 106) under the genus name Micromarsupium.
cheers, dave
Museum fuer Naturkunde
Humboldt Universität zu Berlin
Invalidenstrasse 43
10115 Berlin, Germany
david.lazarus@rz.hu-berlin.de
ph: x49-30-2093-8579
fax: " " -8868
Dave Lazarus (2005/09/20)
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'Mystery creature' November 2005
Hi there,
I am not a biologist, only a geochemist working on particulate organic material, and looking on my filters using SEM I came across this "mystey rad" that seems very similar to your picture. An added piece of info would be that it consists of celestite (SrSO4) not of silica. We confirmed this by doing x-ray analysis on it. It was collected in November 2003 from the NE Altantic at 50m depth a few hundred miles NE of the Azores. I had a look at acantharians, which apparently make skeletons from celestite but it looks nothing them. I wasn't able to confirm its ebridian nature either. It would be nice to confirm its identity.
Kostas
Kostas Kiriakoulakis (2005/11/15)
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mystery rad is the endoskeleton of a Dinoflagellate
endoskeleton of Achradina pulchra
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Hi there,
on browsing for a radiolarian we found in our plankton samples (I suppose it to be Gazelletta hexanema) I stumbled over your "mystery rad" which is the endoskeleton of the dinoflagellate Achradina pulchra Lohmann 1903. Try a Google search or also see at http://www.marbot.gu.se/SSS/dinoflagellates/Achradina_pulchra.htm for some pics and more info.
I made a scan of drawings and micrographs for you from NIVAL, P. (1969) Nouvelles observations sur Achradina pulchra Lohmann, Dinoflagellé, Gymnosclerotidae (=Amphilotales) em Mediterranée. Protistologica, 5: 125-136.
Enjoy.
Manfred
Manfred Kaufmann (2006/02/08)
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Achradina pulchra
micrograph of Achradina pulchra from Nival, 1969
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sorry, forgot the second imge
Manfred Kaufmann (2006/02/08)
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Achradina again
Sorry for that...
Now definitely something went wrong.
Here are the drawings.
Cheers
Manfred
Manfred Kaufmann (2006/02/08)
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