The American Museum of Natural History houses the skin of a tamarin (AMNH 98303) labelled as Saguinus fuscicollis tripartitus . However, the specimen does not match the phenotype of this taxon, now named Leontocebus tripartitus , nor that of any other known species or subspecies of Leontocebus . In this note, we review past taxonomic revisions of the genus Saguinus - revisions that were largely driven by the contentious species or subspecies status of the golden-mantled saddleback tamarin S. fuscicollis tripartitus - and compare the phenotype of AMNH 98303 with those of other tamarins in the same genus to discuss the possible status of this specimen.
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