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Welcome to Wikispecies The free species directory that anyone can edit. It covers Animalia, Plantae, Fungi, Bacteria, Archaea, Protista and all other forms of life. So far we have 665,464 articles Wikispecies is free, because life is in the public domain! You can also check us out on Twitter: @Wikispecies or use the Android app sponsored by Wikimedia. We also have an IRC Channel #wikispeciesconnect

Taxon Navigation Superregnum Archaea Superregnum Bacteria Superregnum Eukaryota Regnum Protista Regnum Fungi Regnum Plantae Regnum Animalia Virus (classification still unclear)

Haloquadratum walsbyi	Sitta europaea caesia	Caloboletus calopus	♂Aphyocharax anisitsi
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♀Brachypelma smithi	Hippopotamus amphibius	Euphorbia leuconeura	Sarcophaga sp. with Tipulidae

Explore Wikispecies HELP Section – Detailed information on creating pages. Taxonomy – Information on the Linnaean classification of species. Village Pump – Discuss the project. Done and To Do – See references to very detailed areas and defined future targets Wikispecies FAQ – Check replies to common concerns. Image Guidelines – Our recommendation on where to upload illustrations Wikispecies PR – Help us by spreading the word of Wikispecies Collaboration with ZooKeys A collaboration between Wikispecies and ZooKeys has been announced. PhytoKeys also joined the collaboration in November 2010. Images of species from ZooKeys and PhytoKeys will be uploaded to Wikimedia Commons and used in Wikispecies. Distinguished author Georges Cuvier 1769–1832. Standard IPNI form: Cuvier Georges Léopold Chrétien Frédéric Dagobert Cuvier (most often published simply as "Georges Cuvier") was a French naturalist and zoologist. He is sometimes referred to as the founding father of paleontology. Cuvier was a major figure in natural sciences research in the early 19th century and was instrumental in establishing the fields of comparative anatomy and paleontology through his work in comparing living animals with fossils. Cuvier's work is considered the foundation of vertebrate paleontology, and he expanded Linnaean taxonomy by grouping classes into phyla and incorporating both fossils and living species into the classification. Cuvier is also known for establishing extinction as a fact: at the time, extinction was considered by many of Cuvier's contemporaries to be merely controversial speculation. He is also remembered for strongly opposing theories of evolution, which at the time (before Darwin's theory) were mainly proposed by Jean-Baptiste Lamarck and Étienne Geoffroy Saint-Hilaire. Cuvier believed there was no evidence for evolution, but rather evidence for cyclical creations and destructions of life forms by global extinction events such as deluges (outburst flooding). Cuvier wrote hundreds of scientific papers and books. His most famous work is Le Règne Animal (1816–1817, four tomes; English title The Animal Kingdom). It sets out to describe the natural structure of the whole of the animal kingdom based on comparative anatomy, and its natural history. Cuvier divided the animals into four embranchements ("Branches", roughly corresponding to phyla), namely vertebrates, molluscs, articulated animals (arthropods and annelids), and zoophytes (cnidaria and other phyla). He is the author of thousands of new taxa, among them well over 5,000 species of fish and molluscs. In 1800 and working only from a drawing, Cuvier was the first to correctly identify in print, a fossil found in Bavaria as a small flying reptile, which he named the Ptero-Dactyle in 1809 (later Latinized as Pterodactylus antiquus). When the French Academy was preparing its first dictionary, it defined "crab" as "A small red fish which walks backwards." This definition was sent with a number of others to the naturalist Cuvier for his approval. The scientist wrote back: "Your definition, gentlemen, would be perfect, only for three exceptions. The crab is not a fish, it is not red, and it does not walk backwards." In 1819, he was created a peer for life in honour of his scientific contributions and is thereafter known as Baron Cuvier. See also: Distinguished authors of previous months.

Species of the month Atlantic bluefin tuna Thunnus thynnus Some facts about this giant fish: Average Weight: 250 kilograms (550 pounds). Average Size: 2 metres (6.5 ft.). Average life span: 15 years. Protection status: Endangered. Diet: Smaller fish, crustaceans, squid, and eels. Range: Western and eastern Atlantic Ocean; the Mediterranean Sea. Strange fact: This fish is warm-blooded. Largest ever recorded tuna: 679 kilograms (1,496 pounds). A premium-size 128-kg tuna fetched at the Tokyo fish market auction $100,000 in January 2009. It was purchased by a Hong Kong sushi bar. Bluefin tuna is considered by gourmets to have the best taste of all tuna, but it has declined to only 3% of its 1960 abundance because of overfishing.

Endangered species of the month Black Rhinoceros Diceros bicornis Some facts about this species: Shoulder height: 1.4–1.7 m Weight: 800–1400 kg Total length: 3–3.7 m Habitat: Bushlands, riverine woodland, marshes, and sometimes grasslands. Distribution: Formerly found across most of southern Africa, Black Rhinos can be found in the eastern coast, south of the Horn of Africa and throughout southern tip of the continent. The animal has been reintroduced into some environments further inland. Diet: Herbivore: leafy plants, branches, shoots, thorny wood bushes, and fruit. Surviving number: Less than 5,000. Three subspecies have become extinct since 1850. One specimen of D. b. chobiensis survives in Botswana. D. b. ladoensis may live in Kenyan reserves. D. b. occidentalis mostly lives in a Botswanan reserve. D. b. michaeli exists in parts of Tanzania. D. b. minor is the only widespread subspecies, having been reintroduced into Botswana, Malawi, and Zambia in addition to reserves and natural environments. Conservation status: Critically Endangered (IUCN 3.1). First described: By the Swedish naturalist Linnaeus in Systema naturae, 1758.

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