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A, B and C look like Aulosphaera or a related Phaeodarian genus - see Haeckel 1887, Report on the Challenger Radiolaria, available online at:http://caliban.mpiz-koeln.mpg.de/~stueber/haeckel/challenger/index.htm ; C looks rather like Kozo Takahashi's nassellarian Conicavus tipiopsis - see Takahashi, K., Radiolaria: flux, ecology, and taxonomy in the Pacific and Atlantic. in Ocean Biocoenosis Series, edited by Honjo, S., pp. 303, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts, USA, 1991a. (this is a reprint of his 1981 Ph.D. thesis). The photos tho don't show enough detail to give a precise assignment (nor am I a specialist on the living rad plankton). But perhaps this helps a bit nonetheless. dave lazarus (2004/10/06) | |
The last image looks like Sponopyle osculosa or Prunopyle titan(which might be morphs of the same critter) Jon Sloan (2004/10/06) | |
Mistery rad
A and B are definitely Phaeodaria, either Aulosphaeridae or Sagosphaeridae. More detail is needed in order to get more precise; among other differences, the former have hollow tubes while in the latter family they are solid. Demetrio Boltovskoy (2004/10/06) | |
The illustrated form looks similar to Aulospharea labradoriensis Borgert illustrated by Reshetnyak, 1955, 1965 and 1966. Annika Sanfilippo (2004/10/06) | |
These are all Phaeodarians. Boltovskoy is right on all accounts, but I will add a few comments. A. and B. are indeed aulosphaerids or sagosphaerids, examples of the radiolarians' dazzling development of geodesic architecture, a few million years before Buckminster Fuller! D. looks much like C. and is likely also a coelodendrid. E. is definitely a castanellid and indeed probably Castanella maxima Schmeidt 1907, which may be synonymous with C. thomsoni Haeckel 1887. Stan Kling (2004/10/06) | |
I just want to thank everyone for all their input, I will take all the info and run with it. I have some better material on its way to answer some of the questions about the finer details. Moira (2004/10/09) | |
A and B are quite common north of Hawaii, I have many photos (very messy with debris) of living cells, which are brilliant carmine. They appear as red specks with the naked eye. I wonder if some subtropical water got diverted to BC? Dean Jacobson (2013/08/02) | |
A: Aulatractus ternaria (Six triangular nets, with seven nodal points of radial tubes) Sonia Munir (2017/07/07) | |
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