Weird... the large signage is about marmosets (Callithrix) but none of the pictured species are marmosets.
If you'd zoom out taxonomically and consider the signage to be about all Callitrichidae, still only 1 of 3 pictured species is actually appliable to the information provided.
It's ironic the actual marmoset species in this enclosure, the silvery marmoset, is not pictured on the large signage.