Parastacidae is the Scientific classification or biological classification refers to how biologists group and categorize extinct and living species of organisms. Modern classification has its roots in the system of Carolus Linnaeus, who grouped species according to shared physical characteristics. These groupings have been revised since Linnaeus to improve consistency with the Darwinian... family of For the village on the Isle of Wight, see Freshwater, Isle of Wight. Fresh water (also freshwater or fresh-water) is water that contains only minimal quantities of dissolved salts, especially sodium chloride, thus distinguishing it from sea water or brackish water. All freshwater ultimately comes from precipitation of atmospheric... freshwater Crayfish - Wikipedia /**/ @import /skins/monobook/IE50Fixes.css; @import /skins/monobook/IE55Fixes.css; @import /skins/monobook/IE60Fixes.css; /**/ Crayfish From Wikipedia The word crayfish or crawfish can mean:- Sea crayfish, also called spiny lobster. These are marine species which are not closely related to crayfish. In some countries, such as New... crayfish found in the The Southern Hemisphere is the part of Earths surface that is south of the equator. It contains four continents (Africa, Australia, South America and Antarctica) separated by four oceans (South Atlantic, Indian Ocean, Pacific Ocean and Antarctic Ocean). Summer occurs around December to February and winter around June to... southern hemisphere. The family is a classic This article is about the ancient supercontinent of Gondwana. For the region of India called Gondwana, see Gondwana (India). The southern supercontinent Gondwana (originally Gondwanaland) included most of the landmasses which make up todays continents of the southern hemisphere, including Antarctica, South America, Africa, Madagascar, India, Australia-New Guinea... Gondwana-distributed taxon, with extant members in South America South America is a continent crossed by the equator, with most of its area in the Southern Hemisphere. South America is situated between the Pacific Ocean and the Atlantic Ocean. It became attached to North America only recently, geologically speaking, with the formation of the Isthmus of Panama... South America, This article is about the country; for the movie see Madagascar (movie) Madagascar is an island nation in the Indian Ocean, off the eastern coast of Africa. Madagascar is the 4th largest island in the world. It is the home of five percent of the worlds plant and animal... Madagascar, Australia, officially the Commonwealth of Australia, is the sixth-largest country in the world, the only one to occupy an entire continent, and the largest in the region of Australasia/ Oceania. It also includes a number of secondary islands, the largest of which is Tasmania, an Australian State. Australia is... Australia, For alternative meanings, see New Zealand (disambiguation). New Zealand is a country formed of two major islands and a number of Pacific Ocean. A common Māori name for New Zealand is Aotearoa, popularly translated as Land of the Long White Cloud. New Zealand also maintains responsibility for the... New Zealand and New Guinea, located just north of Australia, is the worlds second largest island having become separated from the Australian mainland when the area now known as the Torres Strait flooded around 5000 BC. The name Papua also refers to the island in whole or in part. (Refer to Papua... New Guinea, and In biology and ecology, extinction is the ceasing of existence of a species or group of species. The moment of extinction is generally considered to be the death of the last individual of that species. Extinction is a natural phenomenon; it is estimated that 99.9% of all species that... extinct A taxon (plural taxa) is an element of a taxonomy, e.g. in the scientific classification in biology. For example, in biology, the family Hominidae is one taxon, as is the genus Homo and the species Homo sapiens. Taxa form a hierarchical scheme, each being broken down into subtaxa. In... taxa also in World map showing location of Antarctica A satellite composite image of Antarctica For the Kim Stanley Robinson novel see Antarctica (novel) Antarctica (from Greek ἀνταρκτικός, opposite the arctic) is a continent surrounding the Earths South Pole. It is the... Antarctica.

Three genera are to be found in The Republic of Chile is a country located on the southwestern coast of South America. It is a long and narrow strip of land between the Andes mountains and the Pacific Ocean. It shares borders with Argentina to the east, Bolivia to the northeast and Peru to the north. National... Chile, Virilastacus, Samastacus and Parastacus, the last of which also occurs Logical disjunction (usual symbol or) is a logical operator that results in true if either of the operands is true. Definition In logic and mathematics, a disjunction is an or statement. For example John skis or Sally swims is a disjunction. Note that in everyday language, use of the word... disjunctly in southern The Federative Republic of Brazil (República Federativa do Brasil in Portuguese) is the largest and most populous country in South America, and fifth largest in the world. Spanning a vast area between central South America and the Atlantic Ocean, it borders Uruguay, Argentina, Paraguay, Bolivia, Peru, Colombia, Venezuela... Brazil.

There are no crayfish native to continental World map showing location of Africa A satellite composite image of Africa Africa is the worlds second-largest continent in both area and population, after Eurasia. At about 30,244,050 km2 (11,677,240 mi2) including its adjacent islands, it covers 20.3 percent of the total land... Africa, but six species on This article is about the country; for the movie see Madagascar (movie) Madagascar is an island nation in the Indian Ocean, off the eastern coast of Africa. Madagascar is the 4th largest island in the world. It is the home of five percent of the worlds plant and animal... Madagascar, all of the genus Astacoides.

Australasia is the area that includes Australia, New Zealand, New Guinea, and the many smaller islands in the vicinity, most of which are the eastern part of Indonesia. The name was coined by Charles de Brosses in Histoire des navigations aux terres australes (1756). He derived it from the Latin... Australasia is particularly rich in crayfish. The small genus Paranephrops is This article is about the ecological meaning of endemic. See also endemic (epidemiology). Endemic in biology and ecology means exclusively native to a place or biota. It is in contrast to any one of several terms meaning not native (e.g., adventive, exotic, alien, introduced, naturalized, non-native). However it... endemic to For alternative meanings, see New Zealand (disambiguation). New Zealand is a country formed of two major islands and a number of Pacific Ocean. A common Māori name for New Zealand is Aotearoa, popularly translated as Land of the Long White Cloud. New Zealand also maintains responsibility for the... New Zealand ( Thomas Huxley Thomas Henry Huxley F.R.S. (May 4, 1825 - June 29, 1895) was a British biologist, known as Darwins Bulldog for his defence of Charles Darwins theory of evolution. His scientific debates against Richard Owen demonstrated that there were close similarities between the cerebral anatomy of... Huxley claims that Paranephrops also occurs in The Republic of the Fiji Islands occupies an archipelago in the South Pacific Ocean, east of Vanuatu, west of Tonga and south of Tuvalu. National motto: Rerevaka na Kalou ka Doka na Tui (English: Fear God and honour the Queen) Official languages English, Bau Fijian, and Hindustani (Hindi/Urdu) Capital... Fiji.) Two genera, Astacopsis and Parastacoides are endemic to Motto: Ubertas et Fidelitas (Fertility and Faithfulness) Other Australian states and territories Capital Hobart Governor William Cox Premier Paul Lennon (ALP) Area 90,758 km² (7th)  - Land 68,401 km²  - Water 22,357 km² (24.63%) Population (2003)  - Population 478,400 (6th)  - Density 6.92 /km... Tasmania, while a further two are found on either side of the Bass Strait is a sea strait separating Australian mainland (Victoria in particular). It was discovered by Europeans in 1798 by Matthew Flinders. Flinders named it after his ships doctor George Bass. Approximately 240 km wide at its narrowest point, it was almost dry during the last ice age. It... Bass Strait - Geocharax and Engaeus. The greatest diversity, however, is found on the Australian This article is about the geomorphological/geopolitical term; Mainland is also a brand from Fonterra. Mainland is usually the continental part of a region, as opposed to the islands nearby. Sometimes the residents are called the Mainlanders. As a result of the usually larger area of mainland, there are significantly... mainland. Three genera are endemic and have restricted distributions (Engaewa, Gramastacus and Tenuibranchiurus), while two are more widespread and contain nearly ninety species between them: Euastacus, around the Australian coast from The City of Melbournes coat of arms The central business district of Melbourne, viewed from the north Alternate meanings: Melbourne (disambiguation) Melbourne is the capital and largest city of the state of Victoria, and the second largest city in Australia, with a population of 52,117 in the Central... Melbourne to This article is about the Australian city. For other uses of Brisbane, see Brisbane (disambiguation). Brisbane by night Brisbane is the capital city of the state of Queensland, Australia. The citys name is pronounced BRIZ-buhn, IPA: . The City of Brisbane has around 960,000 inhabitants, within a greater... Brisbane, and Cherax across Australia and New Guinea.

External link

Crayfish Taxon Browser (http://iz.carnegiemnh.org/crayfish/NewAstacidea/infraorder.asp?io=Astacidea)

The Crayfish (http://www2.biology.ualberta.ca/palmer/thh/crayfish.htm) - the seminal Events January January 2 - Fred Spofforth claims the first Hat-trick in test cricket. January 11 - Anglo-Zulu War begins. January 22 - Zulu troops massacre British troops at the Battle of Isandlwana. At Rorkes Drift, outnumbered British soldiers drive the attackers away after hours of fighting. February February 12... 1879 work by Thomas Huxley Thomas Henry Huxley F.R.S. (May 4, 1825 - June 29, 1895) was a British biologist, known as Darwins Bulldog for his defence of Charles Darwins theory of evolution. His scientific debates against Richard Owen demonstrated that there were close similarities between the cerebral anatomy of... T. H. Huxley