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Pacifastacus Bott 1950

Keith A. Crandall, James W. Fetzner, Jr., and Horton H. Hobbs, Jr.
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taxon links [up-->]Pacifastacus (Hobbsastacus) [up-->]Pacifastacus (Pacifastacus) [down<--]Astacidae Interpreting the tree
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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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Containing group: Astacidae

References

Bott, Richard. 1950. Die Flusskrebse Europas (Decapoda, Astacidae). Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft, 483: 36 pages, 25 figures, 6 plates.

Hobbs, H. H. Jr. 1989. An Illustrated Checklist of the American Crayfishes (Decapoda: Astacidae, Cambaridae, and Parastacidae). Smithsonian Institution Press.

Title Illustrations
Click on an image to view larger version & data in a new window
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Scientific Name Pacifastacus (Pacifastacus) leniusculus klamathensis
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License - Version 3.0.
Copyright © Keith A. Crandall
About This Page
Page constructed by Emily Browne.

Keith A. Crandall
Brigham Young University, Provo, Utah, USA

James W. Fetzner, Jr.
Carnegie Museum of Natural History, Pittsburgh, Pennsylvania, USA

Horton H. Hobbs, Jr.
Wittenberg University, Springfield, Ohio, USA

Correspondence regarding this page should be directed to Keith A. Crandall at

All Rights Reserved.

Citing this page:

Crandall, Keith A., James W. Fetzner, Jr., and Horton H. Hobbs, Jr. 2001. Pacifastacus Bott 1950. Version 01 January 2001 (under construction). http://tolweb.org/Pacifastacus/6670/2001.01.01 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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