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In biology, a taxon is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping.
Sir Anthony St Leger, KG, of Ulcombe and Leeds Castle in Kent, was an English politician and Lord Deputy of Ireland during the Tudor period.
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon.
Viscount Doneraile is a title that has been created twice in the Peerage of Ireland, both times for members of the St Leger family.
Sorbeoconcha is a taxonomic clade of snails, i.e. gastropods, mainly marine species with gills and opercula, within the clade Caenogastropoda.
Bivalvulida is an order of myxosporean parasites which contains a number of species which cause economically significant losses to aquaculture and fisheries, such as Myxobolus cerebralis and Ceratomyxa shasta. The Myxosporean stages of members of the bivalvulida are characterised by their two spore valves, which meet in a "suture line" which encircles the spore. They usually contain two polar capsules, but species have been reported which contain either one or four.
Cybaeidae is a family of spiders first described by Nathan Banks in 1892. The diving bell spider or water spider Argyroneta aquatica was previously included in this family, but is now in the family Dictynidae.
The British Classics are five long-standing Group 1 horse races run during the traditional flat racing season. They are restricted to three-year-old horses and traditionally represent the pinnacle of achievement for racehorses against their own age group. As such, victory in any classic marks a horse as amongst the very best of a generation. Victory in two or even three of the series marks a horse as truly exceptional.
Doncaster was an English Thoroughbred racehorse and sire. He was the winner of the 1873 Epsom Derby and the sire of the great stallion Bend Or. Through Bend Or he is the direct male-line ancestor of most modern thoroughbreds.
In biology, a homonym is a name for a taxon that is identical in spelling to another such name, that belongs to a different taxon.
Pascoe Grenfell was a British businessman and politician.
The Roman Catholic Diocese of Valleyfield is a Catholic diocese in Quebec and a suffragan of the Archdiocese of Montreal. It was erected in 1892.
The Eucoccidiorida are an order of microscopic, spore-forming, single-celled parasites belonging to the apicomplexan class Conoidasida. Protozoans of this order include parasites of humans, and both domesticated and wild animals including birds. Among these parasites are the Toxoplasma gondii that cause toxoplasmosis and Isospora belli, which results in isosporiasis.
Auguste Théophile Léger was a Canadian politician from the province of New Brunswick.
Iroquois, was the first American-bred Thoroughbred race horse to win the prestigious Epsom Derby at Epsom Downs Racecourse, Epsom, Surrey, England. He then went on to win the St. Leger Stakes at Doncaster Racecourse.
Édouard H. Léger was a physician and political figure in New Brunswick, Canada. He represented Kent in the House of Commons of Canada from 1890 to 1892 as a Conservative member.
La Fleche (1889–1916) was a British Thoroughbred racehorse and broodmare. After being sold for a world record price as a yearling in 1890, she was undefeated as a two-year-old in 1891, winning races against her own sex and defeating some of the year's leading colts. She went on to become the dominant British three-year-old of 1892, claiming the Fillies’ Triple Crown by winning the 1000 Guineas at Newmarket, the Oaks at Epsom and the St Leger at Doncaster. Her only defeat of the year came when she finished second when starting favourite for The Derby.
Chirostyloidea is an anomuran taxon with squat lobster-like representatives. It comprises the three families Chirostylidae, Eumunididae and Kiwaidae. Although representatives of Chirostyloidea are superficially similar to galatheoid squat lobsters, they are more closely related to Lomisoidea and Aegloidea together forming the taxon Australopoda. No fossils can be confidently assigned to the Chirostyloidea, although Pristinaspina may belong either in the family Kiwaidae or Chirostylidae.
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Teresa Isabel Leger Fernandez is an American attorney and politician serving as the Representative for New Mexico's 3rd congressional district in the United States House of Representatives.
References
- ↑ Leger L (1892) Recherches sur les Grégarines. Tablettes Zoologique. 3: 1482