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The Xoloitzcuintle (or Xoloitzquintle, Xoloitzcuintli, or Xolo) is one of several breeds of hairless dog. It is found in standard, intermediate, and miniature sizes. The Xolo also comes in a coated variety, totally covered in fur. Coated and hairless can be born in the same litter as a result of the same combination of genes.
Much of the use of the Catalogue is to provide a backbone taxonomy for other global data portals and biological collections. Through the i4Life project, it has formal partnerships with Global Biodiversity Information Facility , European Nucleotide Archive , Encyclopedia of Life , European Consortium for the Barcode of Life , IUCN Red List , and ...
[24] [6] Another Code that was developed since 1998 is the PhyloCode, which now regulates names defined under phylogenetic nomenclature instead of the traditional Linnaean nomenclature. This new approach requires using phylogenetic definitions that refer to "specifiers", analogous to "type" under rank-based nomenclature.
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The International Code of Phylogenetic Nomenclature, known as the PhyloCode for short, is a formal set of rules governing phylogenetic nomenclature. Its current version is specifically designed to regulate the naming of clades , leaving the governance of species names up to the rank-based nomenclature codes ( ICN , ICNCP , ICNP , ICZN , ICVCN ).
In biological taxonomy, circumscription is the content of a taxon, that is, the delimitation of which subordinate taxa are parts of that taxon.For example, if we determine that species X, Y, and Z belong in genus A, and species T, U, V, and W belong in genus B, those are our circumscriptions of those two genera.
Definitions for existing names, and new names along with their definitions, must be published in peer-reviewed works (on or after the starting date) and must be registered in an online database in order to be valid. The number of supporters for widespread adoption of the PhyloCode is still small, and it is uncertain how widely it will be followed.
Taxonomic databases digitize scientific biodiversity data and provide access to taxonomic data for research. [1] Taxonomic databases vary in breadth of the groups of taxa and geographical space they seek to include, for example: beetles in a defined region, mammals globally, or all described taxa in the tree of life. [2]