Temporary Page

Phascolosomatidea

Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window
taxon links Monophyly Uncertain[down<--]Sipuncula Interpreting the tree
close box

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.

example of a tree diagram

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.

For more information on ToL tree formatting, please see Interpreting the Tree or Classification. To learn more about phylogenetic trees, please visit our Phylogenetic Biology pages.

close box
Containing group: Sipuncula

References

Cutler, E. B. 1994. The Sipuncula, their systematics, biology, and evolution. Cornell University Press, Ithaca, NY.

Maxmena, A. B., B. F. King, E. B. Cutler and G. Giribet. 2003. Evolutionary relationships within the protostome phylum Sipuncula: a molecular analysis of ribosomal genes and histone H3 sequence data. Molecular Phylogenetics and Evolution 27(3):489-503.

Schulze, A., E. B. Cutler and G. Giribet. 2005. Reconstructing the phylogeny of the Sipuncula. Hydrobiologia 535/536:277296.

Schulze, A., E. B. Cutler and G. Giribet. 2007. Phylogeny of sipunculan worms: A combined analysis of four gene regions and morphology. Molecular Phylogenetics and Evolution 42(1):171-192.

Title Illustrations
Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window
Scientific Name Phascolosoma granulatum
Location Madeira
Specimen Condition Live Specimen
Identified By Jose Ignazio Saiz Salinas (from specimens)
Copyright © Peter Wirtz
About This Page

Page: Tree of Life Phascolosomatidea. The TEXT of this page is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0. Note that images and other media featured on this page are each governed by their own license, and they may or may not be available for reuse. Click on an image or a media link to access the media data window, which provides the relevant licensing information. For the general terms and conditions of ToL material reuse and redistribution, please see the Tree of Life Copyright Policies.

Citing this page:

Tree of Life Web Project. 2008. Phascolosomatidea. Version 09 January 2008 (temporary). http://tolweb.org/Phascolosomatidea/20468/2008.01.09 in The Tree of Life Web Project, http://tolweb.org/

edit this page
close box

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.

close box

Phascolosomatidea

Page Content

articles & notes

collections

people

Explore Other Groups

random page

  go to the Tree of Life home page
top