''Tremacebus'' is an extinct genus of New World monkeys from the Miocene, Early Miocene (Colhuehuapian in the South American land mammal age, SALMA classification). The type species is ''T. harringtoni''.

Description

''Tremacebus'' was about in length, and would have resembled a modern night monkey, to which it may have been related, though possibly a stem aotid. However, its eyes appear to have been smaller than the modern species, CT scans of the cranium suggest a relatively small olfactory bulb and poor sense of smell, compared with night monkeys. These features suggest that it may not have been nocturnal. It had an estimated body mass of . Only a few fossils have been found, including a skull from the Sarmiento Formation, Patagonia.''Tremacebus''
at Fossilworks.org

References

External links

Mikko's Phylogeny Archive
Prehistoric monkeys Monotypic prehistoric primate genera Prehistoric primate genera Miocene primates of South America Colhuehuapian Neogene Argentina Fossils of Argentina Fossil taxa described in 1974 Golfo San Jorge Basin Sarmiento Formation {{newworld-monkey-stub