PacifastacusKeith A. Crandall, James W. Fetzner, Jr., and Horton H. Hobbs, Jr.
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.
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.close box
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.
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
Page copyright © 2001
All Rights Reserved.
Citing this page:
Crandall, Keith A., James W. Fetzner, Jr., and Horton H. Hobbs, Jr. 2001. Pacifastacus http://tolweb.org/Pacifastacus/6670/2001.01.01 in The Tree of Life Web Project, http://tolweb.org/. Version 01 January 2001 (under construction).