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Dromaiidae
''Dromaius'' (from greek language, greek δρομαίυς "runner") is a genus of ratite present in Australia. There is one extant species, ''Dromaius novaehollandiae'' commonly known as the emu. In his original 1816 description of the emu, Louis Jean Pierre Vieillot used two genus, generic names; first ''Dromiceius'', then ''Dromaius'' a few pages later. Which label is correct has been a point of contention ever since; the latter is more correctly formed, but the convention in Alpha taxonomy, taxonomy is that the first name given stands, unless it is clearly a typographical error, as argued by W.B. Alexander. For names published on the same day, or in the same publication, the International Code of Zoological Nomenclature states that both names have equal precedence, and that the Principle of First Reviser (Article 24.2 ) determines which name is to be used. Most modern publications, including those of the Australian government, [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dromaius Novaehollandiae
The emu () (''Dromaius novaehollandiae'') is the second-tallest living bird after its ratite relative the Common ostrich, ostrich. It is Endemism, endemic to Australia where it is the largest native bird and the only Extant taxon, extant member of the genus ''Dromaius''. The emu's range covers most of mainland Australia, but the Tasmanian emu, Tasmanian, Kangaroo Island emu, Kangaroo Island and King Island emu, King Island subspecies became extinct after the History of Australia (1788–1850), European settlement of Australia in 1788. Emus are soft-feathered, brown, flightless birds with long necks and legs, and can reach up to in height. Emus can travel great distances, and when necessary can sprint at ; they forage for a variety of plants and insects, but have been known to go for weeks without eating. They drink infrequently, but take in copious amounts of water when the opportunity arises. Breeding takes place in May and June, and fighting among females for a mate is c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ratite
A ratite () is any of a diverse group of flightless, large, long-necked, and long-legged birds of the infraclass Palaeognathae. Kiwi, the exception, are much smaller and shorter-legged and are the only nocturnal extant ratites. The systematics of and relationships within the paleognath clade have been in flux. Previously, all the flightless members had been assigned to the order Struthioniformes, which is more recently regarded as containing only the ostrich. The modern bird superorder Palaeognathae consists of ratites and the flighted Neotropic tinamous (compare to Neognathae). Unlike other flightless birds, the ratites have no keel on their sternum — hence the name, from the Latin ''ratis'' (raft, a vessel which has no keel - in contradistinction to extant flighted birds with a keel). Without this to anchor their wing muscles, they could not have flown even if they developed suitable wings. Ratites are a paraphyletic group; tinamous fall within them, and are the sister gr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tasmanian Emu
The Tasmanian emu (''Dromaius novaehollandiae diemenensis'') is an extinct subspecies of emu. It was found in Tasmania, where it had become isolated during the Late Pleistocene. As opposed to the other insular emu taxa, the King Island emu and the Kangaroo Island emu, the population on Tasmania was sizable, meaning that there were no marked effects of small population size as in the other two isolates. The Tasmanian emu became extinct around 1865 according to the Australian Species Profile and Threats database. Officially this was recorded in 1997 when changes to listings of nationally threatened species saw the Tasmanian sub-species of emu added to the list of species presumed extinct. Information regarding the emu is reliant on 19th century documentary evidence and the limited number of emu specimens in museums. As a consequence one of the biggest challenges in researching the Tasmanian emu is the many names or spellings used to describe the emu. The early colonial accounts sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Code Of Zoological Nomenclature
The International Code of Zoological Nomenclature (ICZN) is a widely accepted convention in zoology that rules the formal scientific naming of organisms treated as animals. It is also informally known as the ICZN Code, for its publisher, the International Commission on Zoological Nomenclature (which shares the acronym "ICZN"). The rules principally regulate: * How names are correctly established in the frame of binominal nomenclature * Which name must be used in case of name conflicts * How scientific literature must cite names Zoological nomenclature is independent of other systems of nomenclature, for example botanical nomenclature. This implies that animals can have the same generic names as plants (e.g. there is a genus ''Abronia'' in both animals and plants). The rules and recommendations have one fundamental aim: to provide the maximum universality and continuity in the naming of all animals, except where taxonomic judgment dictates otherwise. The code is meant to guid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
King Island (Tasmania)
King Island is an island in the Bass Strait, belonging to the Australian state of Tasmania. It is the largest of three islands known as the New Year Group, and the second-largest island in Bass Strait (after Flinders Island). The island's population at the was 1,585 people, up from 1,566 in 2011. The local government area of the island is the King Island Council. The island forms part of the official land divide between the Great Australian Bight and Bass Strait, off the north-western tip of Tasmania and about halfway to the mainland state of Victoria. The southernmost point is Stokes Point and the northernmost point is Cape Wickham. There are three small islands immediately offshore: New Year Island and Christmas Island situated to the northwest, and a smaller island Councillor Island to the east, opposite Sea Elephant Beach. King Island was first visited by Europeans in the late 18th century. It was named after Philip Gidley King, Colonial Governor of New South Wales, who ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
King Island Emu
The King Island emu (''Dromaius novaehollandiae minor'') is an extinct subspecies of emu that was endemic to King Island, in the Bass Strait between mainland Australia and Tasmania. Its closest relative may be the extinct Tasmanian emu (''D. n. diemenensis''), as they belonged to a single population until less than 14,000 years ago when Tasmania and King Island were still connected. The small size of the King Island emu may be an example of insular dwarfism. The King Island emu was the smallest of all known emus and had darker plumage than the mainland emu. It was black and brown and had naked blue skin on the neck, and its chicks were striped like those on the mainland. The subspecies was distinct from the likewise small and extinct Kangaroo Island emu (''D. n. baudinianus'') in a number of osteological details, including size. The behaviour of the King Island emu probably did not differ much from that of the mainland emu. The birds gathered in flocks to forage and during breed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Extinct
Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and recover may have been lost before this point. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively. This difficulty leads to phenomena such as Lazarus taxa, where a species presumed extinct abruptly "reappears" (typically in the fossil record) after a period of apparent absence. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. It is estimated that there are currently around 8.7 million species of eukaryote globally, and possibly many times more if microorganisms, like bacteria, are included. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dodos, m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tasmania
) , nickname = , image_map = Tasmania in Australia.svg , map_caption = Location of Tasmania in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_date = Colony of Tasmania , established_title2 = Federation , established_date2 = 1 January 1901 , named_for = Abel Tasman , demonym = , capital = Hobart , largest_city = capital , coordinates = , admin_center = 29 local government areas , admin_center_type = Administration , leader_title1 = Monarch , leader_name1 = Charles III , leader_title2 = Governor , leader_name2 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Race (biology)
In biological taxonomy, race is an informal rank in the taxonomic hierarchy for which various definitions exist. Sometimes it is used to denote a level below that of subspecies, while at other times it is used as a synonym for subspecies. It has been used as a higher rank than strain, with several strains making up one race. Races may be genetically distinct populations of individuals within the same species, Republished without known revision several times since 1999, and originally published as: or they may be defined in other ways, e.g. geographically, or physiologically. Genetic isolation between races is not complete, but genetic differences may have accumulated that are not (yet) sufficient to separate species. The term is recognized by some, but not governed by any of the formal codes of biological nomenclature. Taxonomic units below the level of subspecies are not typically applied to animals. Other terms In botany, the Latin words ''stirps'' and ''proles'' were trad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific ranks, such as variety, may be named. In bacteriology and virology, under standard bacterial nomenclature and virus nomenclature, there are recommendations but not strict requirements for recognizing other important infraspecific ranks. A taxonomist decides whether ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Australia
The history of Australia is the story of the land and peoples of the continent of Australia. People first arrived on the Australian mainland by sea from Maritime Southeast Asia between 50,000 and 65,000 years ago, and penetrated to all parts of the continent, from the rainforests in the north, the deserts of the centre, and the sub-Antarctic islands of Tasmania and Bass Strait. The artistic, musical and spiritual traditions they established are among the longest surviving such traditions in human history. The first Torres Strait Islanders – ethnically and culturally distinct from the Aboriginal people – arrived from what is now Papua New Guinea around 2,500 years ago, and settled in the islands of the Torres Strait and the Cape York Peninsula forming the northern tip of the Australian landmass. The first known landing in Australia by Europeans was in 1606 by Dutch navigator Willem Janszoon. Later that year, Spanish explorer Luís Vaz de Torres sailed through, and navig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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