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In zoology, a monotype is a taxon that contains only one immediately subordinate taxon. For example, a monotypic genus has only one species. Conversely, one can say that the contained taxon is monotypic within the larger taxon; a genus monotypic within a family.
- An example is the genus Tarsius which is monotypic within the family Tarsiidae, which is itself monotypic in the Tarsiiformes. An example of a monotypic species is the Hyacinth Macaw (Anodorhynchus hyacinthinus), in which no subspecies can be distinguished. The Bearded Reedling (Panurus biarmicus) has numerous subspecies across its range, but belongs to the genus Panurus (monotypic as to species), which current knowledge considers monotypic within the family Panuridae.
In the view of evolutionary biology, taxonomy is a means to represent phylogenetic knowledge. Thus, it is usually avoided to establish monotypic taxa if this does not seem warranted e.g. by phylogenetic evidence such as fossils or inference from cladistic analyses.
- Category:Monotypic taxonomic groups
- Race (classification of human beings) (a more detailed definition of monotypes in the context of humans, Homo sapiens)
- Mayr E, Ashlock PD. (1991): Principles of Systematic Zoology (2nd ed.). McGraw-Hill. ISBN 0-07-041144-1
- Parham, J.F. & Feldman, C.R. (2002): Generic revisions of emydine turtles. Turtle and Tortoise Newsletter 6: 28–30. PDF fulltext
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