? Eumalacostraca
Blue crabs, Callinectes sapidus
Scientific classification
Kingdom: Animalia Phylum: Arthropoda Subphylum: Crustacea Class: Malacostraca Subclass: Eumalacostraca Grobben, 1892
Superorders
Syncarida Peracarida Eucarida †Pancarida See text for orders.

The Eumalacostraca (Greek: "true soft shell") are a subclass of crustaceans, containing almost all living malacostracans, about 22,000 described species. (The outgroups are the Phyllocarida and possibly the Hoplocarida or mantis shrimps.) Download high resolution version (1454x1091, 200 KB) Wikipedia does not have an article with this exact name. ... Binomial name Callinectes sapidus Rathbun, 1896 The Blue crab (Callinectes sapidus) is a small crustacean found in the waters off the Atlantic Ocean and Gulf of Mexico. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms (as opposed to folk taxonomy). ... Binomial name Aptenodytes forsteri Gray, 1844 For other uses, see Animal (disambiguation). ... Subphyla and Classes Subphylum Trilobitomorpha Trilobita - trilobites (extinct) Subphylum Chelicerata Arachnida - spiders, scorpions, etc. ... Classes Remipedia Cephalocarida Branchiopoda Ostracoda Maxillopoda Malacostraca The crustaceans (Crustacea) are a large group of arthropods (55,000 species), usually treated as a subphylum. ... Orders Subclass Eumalacostraca  Superorder Eucarida   Order Amphionidacea   Order Decapoda - crabs, shrimp   Order Euphausiacea - krill  â€ Superorder Pancarida   â€ Order Thermosbaenacea  Superorder Peracarida   Order Amphipoda - amphipods   Order Cumacea - cumaceans   Order Isopoda - pillbugs, sowbugs   Order Lophogastrida   Order Mictacea   Order Mysida   â€ Order Spelaeogriphacea   Order Tanaidacea  Superorder Syncarida   Order Anaspidacea   Order Bathynellacea   â€ Order Palaeocaridacea   Order Stygocaridacea... Karl Grobben (sometimes written Carl Grobben) was an Austrian biologist, who was born on August 27 1854 in Brno, and died on April 13 1945 in Salzburg. ... Suborders   Order Amphipoda - amphipods   Order Cumacea - cumaceans   Order Isopoda - pillbugs, sowbugs   Order Lophogastrida   Order Mictacea   Order Mysida The superorder Peracarida is a large group of crustaceans, having members in marine, freshwater, and terrestrial habitats. ... Orders Decapoda Euphausiacea Amphionidacea Eucarida is a superorder of crustaceans, comprising the decapods, krill and Amphionides. ... Classes & Subclasses Class Branchiopoda Subclass Phyllopoda Subclass Sarsostraca Class Remipedia Class Cephalocarida Class Maxillopoda Subclass Thecostraca Subclass Tantulocarida Subclass Branchiura Subclass Pentastomida Subclass Mystacocarida Subclass Copepoda Class Ostracoda Subclass Myodocopa Subclass Podocopa Class Malacostraca Subclass Phyllocarida Subclass Hoplocarida Subclass Eumalacostraca The crustaceans (Crustacea) are a large group of arthropods (55... Orders Subclass Eumalacostraca  Superorder Eucarida   Order Amphionidacea   Order Decapoda - crabs, shrimp   Order Euphausiacea - krill  â€ Superorder Pancarida   â€ Order Thermosbaenacea  Superorder Peracarida   Order Amphipoda - amphipods   Order Cumacea - cumaceans   Order Isopoda - pillbugs, sowbugs   Order Lophogastrida   Order Mictacea   Order Mysida   â€ Order Spelaeogriphacea   Order Tanaidacea  Superorder Syncarida   Order Anaspidacea   Order Bathynellacea   â€ Order Palaeocaridacea   Order Stygocaridacea... Families Nebaliidae Nebaliopsidae Paranebaliidae Leptostraca is an order in the crustacean class Malacostraca whose best-known example is Nebalia. ... Families Superfamily Bathysquillidoidea Family Bathysquillidae Family Indosquillidae Superfamily Erythrosquilloidea Family Erythrosquillidae Superfamily Gonodactyloidea Family Alainosquillidae Family Eurysquillidae Family Gonodactylidae Family Hemisquillidae Family Odontodactylidae Family Protosquillidae Family Pseudosquillidae Family Takuidae Superfamily Lysiosquilloidea Family Coronididae Family Heterosquillidae Family Lysiosquillidae Family Nannosquillidae Family Tetrasquillidae Superfamily Squilloidea Family Harpiosquillidae Family Squillidae Superfamily uncertain Family...

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. The term carapace refers to a dorsal section of an exoskeleton or shell, in a number of animal groups. ...

Classification

Martin and Davis^[1] present the following classification of living eumalacostracans into orders, to which extinct orders have been added, indicated by †.

The group as originally described by Karl Grobben^[2] included the Stomatopoda (mantis shrimps), and some modern experts continue to use this definition. Here we follow Martin and Davis in excluding them; they are placed in their own subclass, Hoplocarida. Karl Grobben (sometimes written Carl Grobben) was an Austrian biologist, who was born on August 27 1854 in Brno, and died on April 13 1945 in Salzburg. ... Families Not necessarily a complete list: Alainosquillidae Bathysquillidae Coronididae Erythrosquillidae Eurysquillidae Gonodactylidae Hemisquillidae Indosquillidae Lysiosquillidae Nannosquillidae Odontodactylidae Parasquillidae Protosquillidae Pseudosquillidae Squillidae Takuidae Tetrasquillidae The Mantis shrimps are the order Stomatopoda of crustaceans. ... Families Superfamily Bathysquillidoidea Family Bathysquillidae Family Indosquillidae Superfamily Erythrosquilloidea Family Erythrosquillidae Superfamily Gonodactyloidea Family Alainosquillidae Family Eurysquillidae Family Gonodactylidae Family Hemisquillidae Family Odontodactylidae Family Protosquillidae Family Pseudosquillidae Family Takuidae Superfamily Lysiosquilloidea Family Coronididae Family Heterosquillidae Family Lysiosquillidae Family Nannosquillidae Family Tetrasquillidae Superfamily Squilloidea Family Harpiosquillidae Family Squillidae Superfamily uncertain Family...

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)

Suborders   Order Amphipoda - amphipods   Order Cumacea - cumaceans   Order Isopoda - pillbugs, sowbugs   Order Lophogastrida   Order Mictacea   Order Mysida The superorder Peracarida is a large group of crustaceans, having members in marine, freshwater, and terrestrial habitats. ... Genera Mangkurtu Potiicoara Spelaeogriphus Spelaeogriphacea is an order of crustaceans that grow to no more than 10 mm. ... Orders & Families Lophogastrida G. O. Sars, 1870 Eucopiidae Lophogastridae Mysida A. H. Haworth, 1825 Mysidae Lepidomysidae Petalophthalmidae Gnathophausiidae The Mysidacea is a group of small, shrimp-like creatures including the species Neomysis americana (opossum shrimp), comprising the two related orders Mysida and Lophogastrida. ... Orders & Families Lophogastrida G. O. Sars, 1870 Eucopiidae Lophogastridae Mysida A. H. Haworth, 1825 Mysidae Lepidomysidae Petalophthalmidae Gnathophausiidae The Mysidacea is a group of small, shrimp-like creatures including the species Neomysis americana (opossum shrimp), comprising the two related orders Mysida and Lophogastrida. ... Sub-orders Gammaridea Caprellidea Hyperiidea Ingolfiellidea Amphipoda (amphipods) include about 4600 different species of small, shrimp-like crustaceans. ... Suborders Anthuridea Asellota Calabozoida Epicaridea Flabellifera Microcerberidea Oniscidea Phreatoicidea Valvifera Isopods are one of the most diverse orders of Crustaceans, with many species living in all environments, and are common in shallow marine waters. ... Subdivisions There are 4 suborders and 26 families: Suborder Anthracocaridomorpha  Family Anthracocarididae Suborder Apseudomorpha  Superfamily Apseudoidea   Family Apseudellidae   Family Apseudidae   Family Gigantapseudidae   Family Kalliapseudidae   Family Metapseudidae   Family Numbakullidae   Family Pagurapseudidae   Family Parapseudidae   Family Sphyrapidae   Family Tanzanapseudidae   Family Whiteleggiidae  Superfamily Jurapseudoidea   Family Jurapseudidae Suborder Neotanaidomorpha   Family Neotanaidae Suborder Tanaidomorpha  Superfamily Cretitanaoidea... Orders Decapoda Euphausiacea Amphionidacea Eucarida is a superorder of crustaceans, comprising the decapods, krill and Amphionides. ... Common name. ... Binomial name Amphionides reynaudii (H. Milne Edwards, 1833) Synonyms Amphion reynaudii H. Milne Edwards, 1833 Amphionides reynaudii is the sole representative of the Order Amphionidacea, and is a small (less than one inch long) planktonic crustacean found throughout the worlds tropical oceans, mostly in shallow waters. ... Suborders and Infraorders Dendrobranchiata Pleocyemata Caridea Stenopodidea Reptantia, comprising: Eryonoidea Achelata Astacidea Glypheidea Thalassinidea Anomala Brachyura The decapods or Decapoda are a group of crustaceans within the class Malacostraca, including many familiar groups of crustaceans, such as crabs, lobsters and shrimp, but also some families that are less well known. ...

References

1. ↑  Joel W. Martin and George E. Davis (2001). An Updated Classification of the Recent Crustacea, Natural History Museum of Los Angeles County.
2. ↑  C. Grobben (1892). "Zur Kenntnis des Stammbaumes und des Systems der Crustaceen". Sitzber. K. Akad. Wiss., Vienna, Math. Nat. Cl. 101: 237-274.