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The term incertae sedis refers to uncertainty about phylogenetic position of a taxon, which may be expressed, among others, by using a question mark after or before a taxon name.
Reasons why a taxon might be classified as incertae sedis include: The description is not detailed enough to permit a clear classification. A scientific publication about a taxon does not focus on its classification. The taxon is labeled incertae sedis, because the authors of the publication do not want to guess where the taxon belongs.
These uncertain groups are indicated in the annotated classification below by the term incertae sedis, meaning “of uncertain position,” the standard term for a taxonomic group of unknown or undefined relationship. The phylogenetic classification of fungi divides the kingdom into 7 phyla, 10 subphyla, 35 classes, 12 subclasses, and 129 orders.
Reasons why a taxon might be classified as incertae sedis include: The description is not detailed enough to permit a clear classification. A scientific publication about a taxon does not focus on its classification. The taxon is labeled incertae sedis, because the authors of the publication do not want to guess where the taxon belongs.
Feb 21, 2024 · Incertae sedis ( Latin for 'of uncertain placement') [2] or problematica is a term used for a taxonomic group where its broader relationships are unknown or undefined. [3] Alternatively, such groups are frequently referred to as "enigmatic taxa". [4]
Sep 14, 2015 · Thermobispora appears as a deep lineage within the Streptosporangiales but without a clear association with any of the described families. Given the ambiguities, this genus is reclassified in an order incertae sedis in this volume.
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Although classified within a single family incertae sedis, the evidence for the relationship between Thermoanaerobacterium and the other members of this group is not strong. Thus, subsequent analyses may suggest reorganization.
