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type genus
In biological classification, especially zoology, the type genus is the genus which defines a biological family and the root of the family name.
== Zoological nomenclature ==
According to the International Code of Zoological Nomenclature, "The name-bearing type of a nominal family-group taxon is a nominal genus called the 'type genus'; the family-group name is based upon that of the type genus."〔(ICZN Code Art. 63. "Name-bearing types." )〕
Any family-group name must have a type genus (and any genus-group name must have a type species, but any species-group name may, but need not, have one or more type specimens). The type genus for a family-group name is also the genus that provided the stem to which was added the ending -idae (for families).
:Example: The family name Spheniscidae has as its type genus the genus ''Spheniscus'' Brisson, 1760.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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