Eumalacostraca
| Eumalacostraca | |
|---|---|
 |
|
| Atlantic blue crabs, Callinectes sapidus | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Subphylum: | Crustacea |
| Class: | Malacostraca |
| Subclass: | Eumalacostraca Grobben, 1892 |
| Superorders | |
|
Syncarida |
|
The Eumalacostraca are a subclass of crustaceans, containing almost all living malacostracans, about 40,000 described species.[1] The remaining subclasses are the Phyllocarida and possibly the Hoplocarida or mantis shrimps.[2]
Eumalacostracans have 19 segments (5 cephalic, 8 thoracic, 6 abdominal). The thoracic limbs are jointed and used for swimming or walking. The common ancestor is thought to have had a carapace, and most living species possess one, but it has been lost in some subgroups.
[edit] Classification
Martin and Davis present the following classification of living eumalacostracans into orders, to which extinct orders have been added, indicated by †.[2]
The group as originally described by Karl Grobben[3] included the Stomatopoda (mantis shrimp), and some modern experts continue to use this definition. This article follows Martin and Davis in excluding them; they are placed in their own subclass, Hoplocarida.
Subclass Eumalacostraca Grobben, 1892
- Superorder Syncarida Packard, 1885
- †Order Palaeocaridacea
- Order Bathynellacea Chappuis, 1915
- Order Anaspidacea Calman, 1904 (including Stygocaridacea)
- Superorder Peracarida Calman, 1904
- Order Spelaeogriphacea Gordon, 1957
- Order Thermosbaenacea Monod, 1927
- Order Lophogastrida Sars, 1870
- Order Mysida Haworth, 1825
- Order Mictacea Bowman, Garner, Hessler, Iliffe & Sanders, 1985
- Order Amphipoda Latreille, 1816
- Order Isopoda Latreille, 1817 (pillbugs, sowbugs, woodlice)
- Order Tanaidacea Dana, 1849
- Order Cumacea Krøyer, 1846
- Superorder Eucarida Calman, 1904
- Order Euphausiacea Dana, 1852
- Order Amphionidacea Williamson, 1973
- Order Decapoda Latreille, 1802 (crabs, lobsters, shrimp)
[edit] References
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Wikispecies has information related to: Eumalacostraca |
- ^ Gary C. B. Poore (2002). "Introduction". Crustacea: Malacostraca. Zoological catalogue of Australia. 19.2A. CSIRO Publishing. pp. 1–7. ISBN 9780643069015. http://books.google.co.uk/books?id=ww6RzBz42-4C&pg=PA1.
- ^ a b J. W. Martin & G. E. Davis (2001) (PDF). An Updated Classification of the Recent Crustacea. Natural History Museum of Los Angeles County. pp. 132 pp. http://atiniui.nhm.org/pdfs/3839/3839.pdf.
- ^ C. Grobben (1892). "Zur Kenntnis des Stammbaumes und des Systems der Crustaceen". Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften, Vienna. Mathematisch-naturwissenschaftliche Classe 101: 237–274.
