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Thecofilosea

David Bass
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taxon links [up-->]Psammonobiotidae [up-->]Amphitrematidae [up-->]Pseudodifflugiidae [up-->]Ebriida Phylogenetic position of group is uncertainPhylogenetic position of group is uncertainPhylogenetic position of group is uncertain[down<--]Cercozoa Interpreting the tree
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This tree diagram shows the relationships between several groups of organisms.

The root of the current tree connects the organisms featured in this tree to their containing group and the rest of the Tree of Life. The basal branching point in the tree represents the ancestor of the other groups in the tree. This ancestor diversified over time into several descendent subgroups, which are represented as internal nodes and terminal taxa to the right.

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You can click on the root to travel down the Tree of Life all the way to the root of all Life, and you can click on the names of descendent subgroups to travel up the Tree of Life all the way to individual species.

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Containing group: Cercozoa
Title Illustrations
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Scientific Name Capsellina sp.
Comments ATCC strain 50039
Life Cycle Stage cyst
Source Capsellina sp.
Source Collection Micro*scope
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License - Version 2.5.
Copyright © 2006 J. Cole and D. Patterson
Scientific Name Ebria tripartita
Location material from Limulus-ridden sediments at Plum Island (Massachusetts USA)
Source Ebria
Source Collection Micro*scope
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License - Version 2.5.
Copyright © 2001 David J. Patterson
Scientific Name Archerella flavum
Location found among moss at the margins of Lake Toolik, Arctic Alaska, USA
Identified By Edward Mitchell
Life Cycle Stage test with encysted cytoplasm
Source Amphitrema
Source Collection Micro*scope
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License - Version 2.5.
Copyright © 2001 Michele Bahr and D. J. Patterson
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.


Oxford University, Oxford, United Kingdom

Correspondence regarding this page should be directed to David Bass at

All Rights Reserved.

Citing this page:

Bass, David. 2009. Thecofilosea. Version 06 May 2009 (temporary). http://tolweb.org/Thecofilosea/124280/2009.05.06 in The Tree of Life Web Project, http://tolweb.org/

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This page is a Tree of Life Branch Page.

Each ToL branch page provides a synopsis of the characteristics of a group of organisms representing a branch of the Tree of Life. The major distinction between a branch and a leaf of the Tree of Life is that each branch can be further subdivided into descendent branches, that is, subgroups representing distinct genetic lineages.

For a more detailed explanation of the different ToL page types, have a look at the Structure of the Tree of Life page.

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