Genera

In biology, a genus (plural: genera) is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia. Genera and higher taxonomic levels such as families are used in biodiversity studies, particularly in fossil studies since species cannot always be confidently identified and genera and families typically have longer stratigraphic ranges than species.

The term comes from the Latin genus meaning "descent, family, type, gender", cognate with Greek: γένος – genos, "race, stock, kin".

The composition of a genus is determined by a taxonomist. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. In the hierarchy of the binomial classification system, genus comes above species and below family.

Read more about Genera:  Generic Name, Guidelines

Other articles related to "genera":

Geosaurus - Classification and Species
... Genera considered junior synonyms of Geosaurus include Brachytaenius and Halilimnosaurus ... study showing that traditional metriorhynchid genera were not grouped based on actual relationships, necessitated almost all traditional species being removed from Geosaurus and reclassified elsewhere, as ...
Sulfate-reducing Bacteria - Phylogeny
... As of 2009, 60 genera containing 220 species of sulfate-reducing bacteria were known ... This accounts for the largest group of sulfate-reducing bacteria, about 23 genera ... bacteria.is found among the Firmicutes, including the genera Desulfotomaculum, Desulfosporomusa and Desulfosporosinus ...
List Of Cloud Types - Tropospheric Class: Families, Genera, Species, Varieties, and Supplementary Features - Vertical Cumuliform, Stratiform, and Cumulonimbiform (low To Middle Cloud Base) - Genus Cumulonimbus: Towering Vertical
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Hyacinthaceae - Taxonomy - Genera and Species
... and estimates of the number of genera and species varies widely ... with different sources listing from 15 to 45 genera for sub-Saharan Africa alone ... Watson gives about 30 genera and 500–700 species ...

Famous quotes containing the word genera:

    Genius detects through the fly, through the caterpillar, through the grub, through the egg, the constant individual; through countless individuals the fixed species; through many species the genus; through all genera the steadfast type; through all the kingdoms of organized life the eternal unity. Nature is a mutable cloud which is always and never the same.
    Ralph Waldo Emerson (1803–1882)