PROFILPELAJAR.COM

Tremacebus; Temporal range: Early Miocene (Colhuehuapian); ~21.0–17.5 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
	Skull of Tremacebus harringtoni
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Primates
Suborder:	Haplorhini
Infraorder:	Simiiformes
Family:	Aotidae
Genus:	†Tremacebus; Hershkovitz, 1974
Species:	†T. harringtoni
Binomial name
	†Tremacebus harringtoni; (Rusconi, 1933)

Tremacebus is an extinct genus of New World monkeys from the Early Miocene (Colhuehuapian in the SALMA classification). The type species is T. harringtoni.

Description

Tremacebus was about 1 metre (3.3 ft) in length, and would have resembled a modern night monkey, to which it may have been related,^[1] though possibly a stem aotid.^[2] 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.^[3] It had an estimated body mass of 1.8 kg (4.0 lb).^[2]

Only a few fossils have been found, including a skull from the Sarmiento Formation, Patagonia.^[4]

References

^ Palmer, D., ed. (1999). The Marshall Illustrated Encyclopedia of Dinosaurs and Prehistoric Animals. London: Marshall Editions. p. 289. ISBN 1-84028-152-9.
^ ^a ^b Silvestro, Daniele; Tejedor, Marcelo F.; Serrano Serrano, Martha L.; Loiseau, Oriane; Rossier, Victor; Rolland, Jonathan; Zizka, Alexander; Antonelli, Alexandre; Salamin, Nicolas (2017). "Evolutionary history of New World monkeys revealed by molecular and fossil data" (PDF). BioRxiv: 1–32. Retrieved 2019-02-20.
^ Kay, Richard (2002). "Tremacebus harringtoni, Fossil Primate". Digimorph. UT Austin. Retrieved 2009-01-31.
^ Tremacebus at Fossilworks.org