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Crustacea

Crabs, lobsters, shrimp, barnacles, sow bugs, etc.

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taxon links [up-->]Branchiopoda [up-->]Remipedia [up-->]Branchiura [up-->]Thecostraca [up-->]Ostracoda [up-->]Copepoda [up-->]Cephalocarida [up-->]Malacostraca Monophyly Uncertain[down<--]Arthropoda 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.

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.

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Containing group: Arthropoda

Other Names for Crustacea

References

Abele, L. G., T. Spears, W. Kim, and M. Applegate. 1992. Phylogeny of selected maxillopodan and other crustacean taxa based on 18S ribosomal nucleotide sequences: a preliminary analysis. Acta Zoologica 73:373-382.

Boxshall, G. 1998. Comparative limb morphology in major crustacean groups: the coxa-basis joint in postmandibular limbs. Pages 155-167 in Arthropod Relationships. R. A. Fortey and R. H. Thomas, eds. Systematics Association Special Volume Series 55. Chapman & Hall, London.

Boxshall, G. 2007. Crustacean classification: on-going controversies and unresolved problems. Pages 313-325 in: Zhang, Z.-Q. & Shear, W.A., eds. Linnaeus Tercentenary: Progress in Invertebrate Taxonomy. Zootaxa 1668:1–766.

Chen, J. Y., J. Vannier, and D. Y. Huang. 2001. The origin of crustaceans: new evidence from the Early Cambrian of China. Proceedings of the Royal Society of London Series B 268:2181-2187.

Lavrov, D. V., W. M. Brown, and J. L. Boore. 2004. Phylogenetic position of the Pentastomida and (pan)crustacean relationships. Proceedings of the Royal Society London Series B 271:537-44.

Martin, J. W. and G. E. Davis. 2001. An updated Classification of the Recent Crustacea. Natural History Museum of Los Angeles County Science Series 39. Los Angeles, CA.

Regier, J. C., J. W. Shultz, and R. E. Kambic. 2005. Pancrustacean phylogeny: hexapods are terrestrial crustaceans and maxillopods are not monophyletic. Proceedings of the Royal Society Series B 272(1561):395-401.

Richter, S. 2002. The Tetraconata concept: hexapod-crustacean relationships and the phylogeny of Crustacea. Organisms Diversity & Evolution 2:217-237.

Schram, F. (ed.) 1983. Crustacean Phylogeny. A. A. Balkema, Rotterdam.

Schram, F. 1986. Crustacea. Oxford University Press, New York, Oxford.

Schram, F. and C. H. J. Hof. 1998. Fossils and the interrelationships of major crustacean groups. Pages 233-302 in Arthropod Fossils and Phylogeny. G. D. Edgecombe, ed. Columbia University Press, New York.

Spears, T. and L. G. Abele. 1998. Crustacean phylogeny inferred from 18S rDNA. Pages 169-187 in Arthropod Relationships. R. A. Fortey and R. H. Thomas, eds. Systematics Association Special Volume Series 55. Chapman & Hall, London.

Spears, T. and L. G. Abele. 1999. The phylogenetic relationships of crustaceans with foliaceous limbs: an 18S rDNA study of Branchiopoda, Cephalocarida, and Phyllocarida. Journal of Crustacean Biology 19:825-843.

Walossek, D. and K. J. Müller. 1998. Cambrian 'Orsten'-type arthropods and the phylogeny of Crustacea. Pages 139-153 in Arthropod Relationships. R. A. Fortey and R. H. Thomas, eds. Systematics Association Special Volume Series 55. Chapman & Hall, London.

Whittington, H. B. and W. D. U. Rolfe (eds.). 1963. Phylogeny and Evolution of Crustacea. Museum of Comparative Zoology, Cambridge.

Wills, M.A. 1998. A phylogeny of Recent and fossil Crustacea derived from morphological characters. Pages 189–209 in Arthropod Relationships. R. A. Fortey and R. H. Thomas, eds. Systematics Association Special Volume Series 55. Chapman & Hall, London.

Information on the Internet

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 Daphnia pulex
Source Daphnia pulex
Source Collection BIODIDAC
Copyright © Jean-François Cornuet
Scientific Name Grapsus grapsus
Location Santa Cruz Island (Isla Santa Cruz), Galapagos Island, Ecuador
Specimen Condition Live Specimen
Source Sally Lightfoot Crab (Grapsus grapsus)
Source Collection Flickr
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 2.0.
Copyright © 2008 David Cook Wildlife Photography
Scientific Name Lepas anatifera
Location North Carolina
Specimen Condition Live Specimen
Behavior filter-feeding
Source Pelagic goosneck barnacle
Source Collection Flickr
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike License - Version 2.0.
Copyright © 2008 Patrick Coin
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Citing this page:

Tree of Life Web Project. 2002. Crustacea. Crabs, lobsters, shrimp, barnacles, sow bugs, etc.. Version 01 January 2002 (temporary). http://tolweb.org/Crustacea/2529/2002.01.01 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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Crustacea

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