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Successive radiations, not stasis, in the South American primate fauna
- J. Hodgson, K. Sterner, T. Disotell
- Biology, Environmental ScienceProceedings of the National Academy of Sciences
- 7 April 2009
It is concluded that Dolichocebus, Tremacebus, and Chilecebus are likely too old to be crown platyrrhines, suggesting they were part of an extinct early radiation, which follows a global temperature peak and tectonic activity in the Andes.
The Genetic Structure of Pacific Islanders
- Jonathan Scott Friedlaender, F. Friedlaender, J. Weber
- Environmental SciencePLoS genetics
- 1 January 2008
The analysis indicates the ancestors of Polynesians moved through Melanesia relatively rapidly and only intermixed to a very modest degree with the indigenous populations there, contributing to a resolution to the debates over Polynesian origins and their past interactions with Melanesians.
Primate phylogenetic relationships and divergence dates inferred from complete mitochondrial genomes.
Melanesian mtDNA Complexity
Coalescence estimates based on synonymous transitions in the coding region suggest an initial settlement and expansion in the region at ∼30–50,000 years before present (YBP), and a second important expansion from Island Southeast Asia/Taiwan during the interval ∼3,500–8,000 YBP.
Ancient mitochondrial M haplogroups identified in the Southwest Pacific.
- D. Merriwether, J. Hodgson, Jonathan Scott Friedlaender
- BiologyProceedings of the National Academy of Sciences…
- 13 September 2005
Three formerly unresolved branches of macrohaplogroup M are characterized that are called haplogroups M27, M28, and M29 from Northern Island Melanesia, indicating that they were among the earliest mtDNA variants to appear in these islands or in the ancient continent of Sahul.
Early Back-to-Africa Migration into the Horn of Africa
Taking into account published mitochondrial, Y chromosome, paleoclimate, and archaeological data, it is found that the time of the Ethio-Somali back-to-Africa migration is most likely pre-agricultural.
Natural selection for the Duffy-null allele in the recently admixed people of Madagascar
- J. Hodgson, Joseph K. Pickrell, G. Perry
- BiologyProceedings of the Royal Society B: Biological…
- 22 August 2014
The observed genomic single nucleotide polymorphism diversity in the Malagasy is incompatible with such extreme demographic scenarios, indicating that positive selection for the Duffy-null allele best explains the high frequency of the allele in Madagascar.
The stem catarrhine Saadanius does not inform the timing of the origin of crown catarrhines.
Mitochondrial DNA Variation in Northern Island Melanesia