? Branchiura
Argulus sp. on a fish
Scientific classification
Kingdom: Animalia Phylum: Arthropoda Subphylum: Crustacea Class: Maxillopoda Subclass: Branchiura Thorell, 1864 Order: Arguloida Yamaguti, 1963 Family: Argulidae Leach, 1819

Branchiura, commonly called carp lice or fish lice are a group of parasitic crustaceans of uncertain position within the Maxillopoda. They are thought to be primitive forms but they have no fossil record. The subclass contains one family with around 130 species, almost all of which are ectoparasites on fish. A few exceptions have been found on amphibians. Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Phyla Porifera (sponges) Ctenophora (comb jellies) Cnidaria (coral, jellyfish, anemones) Placozoa (trichoplax) Subregnum Bilateria (bilateral symmetry) Acoelomorpha (basal) Orthonectida (parasitic to flatworms, echinoderms, etc. ... 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. ... Sub-classes Thecostraca Tantulocarida Branchiura Pentastomida Mystacocarida Copepoda Maxillopoda is a class of crustaceans, characterised by a reduction of the abdomen and its appendages. ... Yamaguchi (山口市 Yamaguchishi) is the capital city of Yamaguchi Prefecture, Japan. ... 1963 (MCMLXIII) was a common year starting on Tuesday (link will take you to calendar). ... William Elford Leach FRS (February 2, 1790 - August 26, 1836) was an English zoologist and marine biologist. ... 1819 common year starting on Friday (see link for calendar). ... A parasite is an organism that spends a significant portion of its life in or on the living tissue of a host organism and which causes harm to the host without immediately killing it. ... Classes Class Branchiopoda Subclass Phyllopoda Subclass Sarsostraca Class Remipedia Order Enantiopoda Order Nectiopoda Class Cephalocarida Order Brachypoda Class Maxillopoda Subclass Mystacocarida Subclass Copepoda Subclass Branchiura Subclass Pentastomida Subclass Tantulocarida Subclass Thecostraca Infraclass Cirripedia Class Ostracoda Order Metacopina Subclass Myodocopa Subclass Podocopa Class Malacostraca Subclass Eumalacostraca Subclass Hoplocarida Subclass Phyllocarida The... Sub-classes Thecostraca Tantulocarida Branchiura Pentastomida Mystacocarida Copepoda Maxillopoda is a class of crustaceans, characterised by a reduction of the abdomen and its appendages. ... Look up Primitive in Wiktionary, the free dictionary The word primitive can refer to: for the art movement, see primitive art and primitivism (art) for the anarchist philosophy, see Anarcho-primitivism for the communist concept, see primitive communism for the baptist church, see primitive baptist primitive (biology) primitive (computer science... In biology, a subclass is one level below a class. ... Scientific classification or biological classification refers to how biologists group and categorize extinct and living species of organisms. ... In biology, a species is the basic unit of biodiversity. ... A parasite is an organism that lives in or on the living tissue of a host organism at the expense of that host. ... Atlantic herring, Clupea harengus: the most abundant species of fish in the world. ... Orders Subclass Labyrinthodontia- extinct Subclass Lepospondyli- extinct Subclass Lissamphibia   Anura   Caudata   Gymnophiona Amphibians (class Amphibia) are a taxon of animals that include all tetrapods (four-legged vertebrates) that do not have amniotic eggs. ...