Evidence map›Paper›PMID 22474376›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2012

Evidence for a convergent slowdown in primate molecular rates and its implications for the timing of early primate evolution.

Michael E Steiper, Erik R Seiffert

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

38 citing papers in PubMed.

  1. Parting ways: Pan-Homo divergence revisited.Primates; journal of primatology · 2026
    Review
  2. Article
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  5. The provisioned primate: patterns of obesity across lemurs, monkeys, apes and humans.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023
    Article
  6. Article
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  9. Organization of extrastriate and temporal cortex in chimpanzees compared to humans and macaques.Cortex; a journal devoted to the study of the nervous system and behavior · 2019
    Article
  10. Primitive Old World monkey from the earliest Miocene of Kenya and the evolution of cercopithecoid bilophodonty.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Michael E SteiperDepartment of Anthropology, Hunter College of the City University of New York, New York, NY 10065, USA. msteiper@hunter.cuny.edu
Erik R Seiffert

Funding

WILD TYPE &MUTANT P53 INTERACTIONS WITH HIV LTR DNAG12RR003037 · NCRR · HUNTER COLLEGE · PI DOTTIN, ROBERT P · 1985 to 2011
$27.6M
Basic and Translational Research Center for Reducing Health DisparitiesG12MD007599 · NIMHD · HUNTER COLLEGE · PI ANGULO, JESUS A · 2012 to 2017
$14.6M
NCRR NIH HHS G12 RR003037NCRR NIH HHS RR003037NIMHD NIH HHS G12 MD007599
6 · The paper itself

Abstract

A long-standing problem in primate evolution is the discord between paleontological and molecular clock estimates for the time of crown primate origins: the earliest crown primate fossils are ~56 million y (Ma) old, whereas molecular estimates for the haplorhine-strepsirrhine split are often deep in the Late Cretaceous. One explanation for this phenomenon is that crown primates existed in the Cretaceous but that their fossil remains have not yet been found. Here we provide strong evidence that this discordance is better-explained by a convergent molecular rate slowdown in early primate evolution. We show that molecular rates in primates are strongly and inversely related to three life-history correlates: body size (BS), absolute endocranial volume (EV), and relative endocranial volume (REV). Critically, these traits can be reconstructed from fossils, allowing molecular rates to be predicted for extinct primates. To this end, we modeled the evolutionary history of BS, EV, and REV using data from both extinct and extant primates. We show that the primate last common ancestor had a very small BS, EV, and REV. There has been a subsequent convergent increase in BS, EV, and REV, indicating that there has also been a convergent molecular rate slowdown over primate evolution. We generated a unique timescale for primates by predicting molecular rates from the reconstructed phenotypic values for a large phylogeny of living and extinct primates. This analysis suggests that crown primates originated close to the K-Pg boundary and possibly in the Paleocene, largely reconciling the molecular and fossil timescales of primate evolution.

Indexed as

Genetic VariationModels, GeneticPhylogenyAnimalsBiological EvolutionBody SizeCholesterol 7-alpha-HydroxylaseCystic Fibrosis Transmembrane Conductance RegulatorFossilsMarkov ChainsMonte Carlo MethodPrimatesSkullSpecies SpecificityTime FactorsCholesterol 7-alpha-HydroxylaseCystic Fibrosis Transmembrane Conductance Regulator

Identifiers

PMID22474376
PMCPMC3341044

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.