On the time scale of new world primate diversification

Dados Bibliográficos

ID8320751
AutoresCarlos G Schrago (0000-0001-6257-8906, Universidade Federal do Rio de Janeiro, autor correspondente)
Ano2007
Volume132
Fascículo3
Páginas344-354
Data de publicação2007-03-01
Peer ReviewedSim
Open AccessSim
TipoARTICLE
PeriódicoAmerican Journal of Physical Anthropology (JOURNAL)
Identificadores do periódicoISSN: 0002-9483 • E-ISSN: 1096-8644
EditoraWiley (PUBLISHER • GB)
DOI10.1002/ajpa.20459
PMID17133436
OpenAlexW2011493779
IdiomaEN
Citações recebidas13
Referências citadas59

New World primates comprise a diverse group of neotropical mammals that suddenly appeared in the Late Oligocene deposits of South America at around 26 million years ago (MYA). Platyrrhines seem to have separated from Old World anthropoids ca. 35 MYA, and their subsequent diversfication is not well documented in the fossil record. Therefore, molecular clock studies were conducted to unveil the temporal scenario for the evolution of the group. In this study, divergence times of all splits within platyrrhines until the generic level were investigated, using two different gene data sets under relaxed molecular clocks. Special attention was paid to the basal diversification of living platyrrhines and to the basal split of the modern Cebidae family, since these nodes were reported to be phylogenetically difficult to resolve. The results showed that analyses from various genomic regions are similar to estimates obtained by early single‐gene studies. Living New World primates are descendants of ancestors that lived in the Early Miocene, at around 20 MYA, and modern Cebidae and Pitheciidae appeared ca. 16.9 and 15.6 MYA, respectively. The last common ancestor of living Atelidae is 12.4 million years old, making this clade the youngest New World primate family; at approximately the same time, modern Callitrichinae was evolving (11.8 MYA). The gap between the Platyrrhini/Catarrhini separation and the last common ancestor of living Platyrrhini may be as big as 20 million years. Paleontological and geoclimatological evidence corroborates that the sudden appearance of modern families may be a consequence of environmental changes during the Miocene. Am J Phys Anthropol, 2007 © 2006 Wiley‐Liss, Inc

Biological evolution · Biology · Cebidae · Clade · Evolutionary biology · Gene · Hominidae · Molecular clock · Most recent common ancestor · Old World · Phylogenetics · Primate · Zoology · Evolution and Paleontology Studies · Genetics · Genomics and Phylogenetic Studies · Paleontology · Primate Behavior and Ecology