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Psammonobiotidae Golemanski 1974

Ralf Meisterfeld and Edward Mitchell taxon links Phylogenetic position of group is uncertain[down<--]Thecofilosea Interpreting the tree
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Containing group: Thecofilosea


Test more or less shaped like a Greek vase, with funnel-shaped or disk-like apertural collar; aperture may be terminal or more or less bent to one side; clear or with attached or embedded particles.

Discussion of Phylogenetic Relationships

The concept of the Family applied here differs from that of Golemansky (1974) in that genera with round or oval siliceous idiosomes are excluded and placed with the Euglyphida; those with terminal collar like Micramphora, Nadinella and Ogdeniella are included. Whether these genera form a natural group is open to dispute. The striking similarity of the apertural structures is perhaps only a convergence as a result of the selective pressure in the interstitial environment.

The genera of this family are separated mainly by characters of the shell. None of the species has been established in clonal culture, a critical evaluation of the diagnostic characters is lacking. The distinctions between the genera have been partly lost by recent species descriptions - and this also may make identification to genus difficult.


Golemansky, V. 1974. Psammonobiotidae, a new family of thecamoebans (Rhizopoda, Testacea) from supralittoral sea sandstones. Acta Protozoologica 13(11):137-142.

About This Page

This page is being developed as part of the Tree of Life Web Project Protist Diversity Workshop, co-sponsored by the Canadian Institute for Advanced Research (CIFAR) program in Integrated Microbial Biodiversity and the Tula Foundation.

Rheinisch-Westfälische Technische Hochschule Aachen, Germany

Edward Mitchell
University of Neuchâtel

Correspondence regarding this page should be directed to Ralf Meisterfeld at and Edward Mitchell at

All Rights Reserved.

Citing this page:

Meisterfeld, Ralf and Edward Mitchell. 2009. Psammonobiotidae Golemanski 1974. Version 06 May 2009 (under construction). http://tolweb.org/Psammonobiotidae/124622/2009.05.06 in The Tree of Life Web Project, http://tolweb.org/

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