Evidence map›Paper›PMID 34663691›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2021

Pterosaurs evolved a muscular wing-body junction providing multifaceted flight performance benefits: Advanced aerodynamic smoothing, sophisticated wing root control, and wing force generation.

Michael Pittman, Luke A Barlow, Thomas G Kaye, Michael B Habib

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing 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

5 citing papers in PubMed.

  1. Hidden artistic complexity of Peru's Chancay culture discovered in tattoos by laser-stimulated fluorescence.Proceedings of the National Academy of Sciences of the United States of America · 2025
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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

4 authors.

Michael PittmanVertebrate Palaeontology Laboratory, Research Division for Earth and Planetary Science, The University of Hong Kong, Pokfulam, Hong Kong SAR, China; mpittman@hku.hk.ORCID 0000-0002-6149-3078
Luke A BarlowVertebrate Palaeontology Laboratory, Research Division for Earth and Planetary Science, The University of Hong Kong, Pokfulam, Hong Kong SAR, China; mpittman@hku.hk.ORCID 0000-0002-0867-649X
Thomas G KayeFoundation for Scientific Advancement, Sierra Vista, AZ 85650.ORCID 0000-0001-7996-618X
Michael B HabibDinosaur Institute, Natural History Museum of Los Angeles County, Los Angeles, CA 90007.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pterosaurs were the first vertebrate flyers and lived for over 160 million years. However, aspects of their flight anatomy and flight performance remain unclear. Using laser-stimulated fluorescence, we observed direct soft tissue evidence of a wing root fairing in a pterosaur, a feature that smooths out the wing-body junction, reducing associated drag, as in modern aircraft and flying animals. Unlike bats and birds, the pterosaur wing root fairing was unique in being primarily made of muscle rather than fur or feathers. As a muscular feature, pterosaurs appear to have used their fairing to access further flight performance benefits through sophisticated control of their wing root and contributions to wing elevation and/or anterior wing motion during the flight stroke. This study underscores the value of using new instrumentation to fill knowledge gaps in pterosaur flight anatomy and evolution.

Indexed as

Biological EvolutionAnimalsDinosaursFlight, AnimalFossilsWings, Animalaerodynamicsflight performancefossil soft tissuepterosaurswing root fairing

Identifiers

PMID34663691
PMCPMC8612209

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.