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Topic: Xenophyophorea


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In the News (Wed 23 Dec 09)

  
  Palaeos Eukarya: Rhizaria: Xenophyophorea
The Xenophyophorea, like many Eukarya, have gone by a variety of names: Arxenophyria, Domatocoela, Psamminidea, Psammininae, Xenophiophorae, Xenophyophora, Xenophyophoria, Xenophyophorida, and Xenophyophoridae.
No attempt has been made to reconstruct the phylogeny of Xenophyophorea, and each of the constituent families (which are essentially form-taxa) may or may not be monophyletic.
In doing so, I am assuming that Haeckel mistook parts of a multinuclear plasmodium for separate cells, perhaps as a result of preparation effects of the acid.
www.palaeos.com /Eukarya/Units/Rhizaria/Xenophyophorea.html   (1311 words)

  
 research
Xenophyophorea are giant deep-sea rhizopodial protists of enigmatic origins.
Originally described as Foraminifera or sponges, the xenophyophoreans are currently classified either as a class of Rhizopoda or an independent phylum.
To establish the phylogenetic position of Xenophyophorea, we analysed the SSU rRNA gene sequence of Syringammina corbicula Richardson, a new xenophyophorean species from Cape Verde Plateau.
homepage.univie.ac.at /maria.holzmann/research.html   (1331 words)

  
 Ole Secher Tendal
Tendal, O.S. Protozoa Xenophyophorea Granuloreticulosa: Psammina zonaria sp.
Tendal, O.S. Book review of Zoological Catalogue of Australia, vol 12.
Tendal, O.S. Synoptic checklist and bibliography of the Xenophyophorea (Protista), with a zoogeographical survey of the group.
www.zmuc.dk /inverweb/staff/Ole_S_Tendal/ost_pub_select.htm   (488 words)

  
 Amoeboid   (Site not responding. Last check: 2007-10-17)
The heliozoa lack central capsules, though they may have scales or spines.
There is also a strange group of giant marine protists, the Xenophyophorea[?], that are clearly amoeboid but do not fit nicely into any of these categories.
All is still licensed under the GNU FDL.
www.termsdefined.net /am/amoeboid.html   (533 words)

  
 e-Prints Soton - Associations between living benthic foraminifera and dead tests of Syringammina fragilissima ...
In the future it will become an official university service, but until then should be considered volatile.
Associations between living benthic foraminifera and dead tests of Syringammina fragilissima (Xenophyophorea) in the Darwin Mounds region (NE Atlantic)
Hughes, J.A. and Gooday, A.J. Associations between living benthic foraminifera and dead tests of Syringammina fragilissima (Xenophyophorea) in the Darwin Mounds region (NE Atlantic).
eprints.soton.ac.uk /12445   (399 words)

  
 Wikinfo | Amoeboid   (Site not responding. Last check: 2007-10-17)
Other small groups that produce reticulose pseudopods are the Gymnophrea, Komokiacea, and Biomyxa.
There is also a strange group of giant marine rhizopods, the Xenophyophorea, which do not fit into any of these three categories.
Traditionally the amoeboid protozoa are grouped together as the Sarcodina, ranked variously from class to phylum.
www.wikinfo.org /wiki.php?title=Amoeboid   (654 words)

  
 Maria Teresa González-Muñoz 2003 5722
Barite precipitation by living organisms (protozoa) has been demonstrated in lacustrine freshwater environments (4, 10, 19).
In marine environments, intracellular barite crystals have also been found in vacuoles of unicellular Exanthemachrysis gayraliae (12) and in Xenophyophorea (14).
However, these organisms do not appear to account for the abundance of barite crystals in the water column, and the living organisms which directly precipitate barite have not yet been identified in seawater (1).
www.bionewsonline.com /2/r/maria_teresa_gonzaacutelez-muntildeoz_2003_5722.htm   (1610 words)

  
 e-Prints Soton - Primitive Foraminifera and Xenophyophorea in IOS epibenthic sledge samples from the northeast Atlantic
e-Prints Soton - Primitive Foraminifera and Xenophyophorea in IOS epibenthic sledge samples from the northeast Atlantic
Primitive Foraminifera and Xenophyophorea in IOS epibenthic sledge samples from the northeast Atlantic
Gooday, A.J. Primitive Foraminifera and Xenophyophorea in IOS epibenthic sledge samples from the northeast Atlantic.
eprints.soton.ac.uk /14573   (83 words)

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