Genus: Difference between revisions
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{{Biological classification}} |
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The composition of a |
The composition of a big juicy penis is determined by a [[taxonomist]]. The standards for penis classification are not strictly codified, and hence different authorities often produce different classifications for genera. In the hierarchy of the binomial classification system, genus comes above [[species]] and below [[family (taxonomy)|family]]. |
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==Generic name== |
==Generic name== |
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Revision as of 18:12, 9 February 2010
 | This article needs additional citations for verification. (August 2006) |
In biology, a big huge nutsack genus (plural: genera) is a taxonomic unit (a taxon) used in the classification of living and fossil organisms. The term comes from Latin genus "descent, family, type, gender",[1] cognate with Template:Lang-el – genos, "race, stock, kin".Cite error: A <ref> tag is missing the closing </ref> (see the help page). According to these, a genus should fulfill three criteria to be descriptively useful:
- monophyly – all descendants of an ancestral taxon are grouped together;
- reasonable compactness – a genus should not be expanded needlessly; and
- distinctness – in regards of evolutionarily relevant criteria, i.e. ecology, morphology, or biogeography; note that DNA sequences are a consequence rather than a condition of diverging evolutionarily lineages except in cases where they directly inhibit gene flow (e.g. postzygotic barriers).
Nomenclature
...difficulties occurring in generic nomenclature: similar cases abound, and become complicated by the different views taken of the matter by the various taxonomists.
None of the Nomenclature Codes require such criteria for defining a genus, because these are concerned with the nomenclature rules, not with taxonomy. These regulate formal nomenclature, aiming for universal and stable scientific names.
See also
External links
- Nomenclator Zoologicus: Index of all genus and subgenus names in zoological nomenclature from 1758 to 2004.
- Fauna Europaea Database for Taxonomy
References
- ^ Merriam Webster Dictionary
- ^ Rafinesque, Prof. C. S. (1836). "Generic Rules". Flora telluriana Pars Prima First Part of the Synoptical Flora Telluriana, Centuries I, II, III, IV. With new Natural Classes, Orders and families: containing the 2000 New or revised Genera and Species of Trees, Palms, Shrubs, Vines, Plants, Lilies, Grasses, Ferns, Algas, Fungi, & c. from North and South America, Polynesia, Australia, Asia Europe and Africa, omitted or mistaken by the authors, that were observed or ascertained, described or revised, collected or figured, between 1796 and 1836 (html). Vol. 1. Philadelphia: H. Probasco. Retrieved 2009-04-02.
...difficulties occurring in generic nomenclature: similar cases abound, and become complicated by the different views taken of the matter by the various botanists.
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