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''ラテン語:Incertae sedis'' (Latin for "of uncertain placement") is a term used for a taxonomic group where its broader relationships are unknown or undefined. Alternatively, such groups are frequently referred to as "enigmatic taxa". In the system of open nomenclature, uncertainty at specific taxonomic levels is indicated by ''ラテン語:incertae familiae'' (of uncertain family), ''ラテン語:incerti subordinis'' (of uncertain suborder), ''ラテン語:incerti ordinis'' (of uncertain order) and similar terms. == Examples == *The fossil plant ''Paradinandra suecica'' could not be assigned to any family, but was placed ''incertae sedis'' within the order Ericales when described in 2001. * The fossil ''Gluteus minimus'', described in 1975, could not be assigned to any known animal phylum. The genus is therefore ''incertae sedis'' within the kingdom Animalia. * While it was unclear to which order the New World vultures (family Cathartidae) should be assigned, they were placed in Aves ''incertae sedis''. It was later agreed to place them in a separate order, Cathartiformes. *Bocage's longbill, ''Amaurocichla bocagei'', a species of passerine bird, belongs to the superfamily Passeroidea. Since it is unclear to which family it belongs, it is classified as Passeroidea ''incertae sedis''. *HeLa cells, descended from human cervical cancer cells, may diverge genetically from normal human cells sufficiently to be categorized as a new species with largely ''incertae sedis'' taxonomy. *Genus ''Dendrogramma'', consisting of two species identified in 2014, is a genus of animals that has not been definitively assigned to any existing phylum. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Incertae sedis」の詳細全文を読む スポンサード リンク
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