A taxonomic <xref>family</xref> within the <xref>parvorder</xref> <xref>Platyrrhini</xref> — the <xref>marmosets</xref>, <xref>tamarins</xref>, <xref>capuchins</xref> and <xref>squirrel monkeys</xref>.
User Defined Definitions
"all the New World monkeys except marmosets and tamarins"