Dictionary of Human Evolution and Biology

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Callithrix Species Groups

Clusters of marmoset species based on closeness of relationship. The systematics of Callithrix is in flux, with recent revisions producing as many as 17 species. However, some workers prefer a smaller number of Callithrix species, with the understanding that these species contain highly variable subspecies or populations that do not deserve species recognition. Molecular evidence appears to support this view. Consequently, the marmosets can be grouped into three clusters, the silvery marmoset, the tassel-ear marmoset, and the tuftedeared marmosets, that may eventually be collapsed into a smaller number of species.

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