Evidence map›Paper›PMID 21964974›Full record

ArticleDie Naturwissenschaften2011

Out of Africa: Fossils shed light on the origin of the hoatzin, an iconic Neotropic bird.

Gerald Mayr, Herculano Alvarenga, Cécile Mourer-Chauviré

Abstract read
PubMed Publisher
In one paragraph

Article in Die Naturwissenschaften, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
4.8field-weighted citation impact, top 6% of its field
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

11 citing papers in PubMed, 55 citations in OpenAlex.

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  6. Climatic shifts drove major contractions in avian latitudinal distributions throughout the Cenozoic.Proceedings of the National Academy of Sciences of the United States of America · 2019
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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

3 authors at 3 institutions in 4 countries.

Gerald MayrForschungsinstitut Senckenberg, Sektion Ornithologie, Senckenberganlage 25, 60325, Frankfurt am Main, Germany. Gerald.Mayr@senckenberg.de
Herculano Alvarenga
Cécile Mourer-Chauviré
Laboratoire de Géologie de Lyon : Terre, Planètes et Environnement · FRSenckenberg Research Institute and Natural History Museum Frankfurt/M · DEUniversidade de Taubaté · BR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We describe the earliest fossils of the enigmatic avian taxon Opisthocomiformes (hoatzins) from the Oligo-Miocene (22-24 mya) of Brazil. The bones, a humerus, scapula and coracoid, closely resemble those of the extant hoatzin, Opisthocomus hoazin. The very similar osteology of the pectoral girdle in the new Brazilian fossil compared to the extant O. hoazin, in which it reflects peculiar feeding adaptations, may indicate that hoatzins had already evolved their highly specialized feeding behavior by the mid-Cenozoic. We further show that Namibiavis senutae from the early Miocene of Namibia is another, previously misclassified representative of Opisthocomiformes, which documents that the extant Neotropic distribution of hoatzins is relictual. Because of the weak flight capabilities of hoatzins, their occurrence on both sides of the South Atlantic is of particular biogeographic interest. We detail that this distribution pattern is best explained by dispersal from Africa to South America, and that Opisthocomiformes provide the first example of transatlantic rafting among birds.

Indexed as

PhylogenyAnimalsBirdsBone and BonesBrazilFossilsNamibia

Identifiers

PMID21964974
OpenAlexW2069763219

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.