Evidence map›Paper›PMID 29203766›Full record

ArticleNature communications2017

A new stem sarcopterygian illuminates patterns of character evolution in early bony fishes.

Jing Lu, Sam Giles, Matt Friedman, Min Zhu

Abstract read
In one paragraph

Article in Nature communications, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.

0numbers the graph read from it
0cells of the map it votes in
18citing 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

18 citing papers in PubMed.

  1. Article
  2. Article
  3. A 3D braincase of the early jawed vertebrateNational science review · 2025
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. The rapid evolution of lungfish durophagy.Nature communications · 2022
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Tooth replacement in early sarcopterygians.Royal Society open science · 2019
    Article
  15. Article
  16. Article
  17. Article
  18. Article
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.

Jing LuKey Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, 100044, China. lujing@ivpp.ac.cn.
Sam GilesDepartment of Earth Sciences, University of Oxford, South Parks Road, Oxford, OX1 3AN, UK.
Matt FriedmanDepartment of Earth Sciences, University of Oxford, South Parks Road, Oxford, OX1 3AN, UK.ORCID http://orcid.org/0000-0002-0114-7384
Min ZhuKey Laboratory of Vertebrate Evolution and Human Origins of Chinese Academy of Sciences, Institute of Vertebrate Paleontology and Paleoanthropology, Chinese Academy of Sciences, Beijing, 100044, China. zhumin@ivpp.ac.cn.ORCID http://orcid.org/0000-0002-4786-0898

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Discoveries of putative stem sarcopterygians from the late Silurian and Early Devonian of South China have increased our knowledge of the initial diversification of osteichthyans while also highlighting incongruities in character evolution in this major jawed vertebrate group. Character-rich endocrania are incompletely preserved for early bony fishes, limiting a detailed understanding of complex internal morphology and evolutionary changes in the cranium. Here we report a new sarcopterygian (Ptyctolepis brachynotus gen. et sp. nov.) from the Pragian (Early Devonian) of South China, which preserves a unique example of a completely ossified otoccipital division of the braincase in a stem lobe-finned fish. The hyomandibular facets are paired but lie dorsal to the jugular canal, representing a hitherto unobserved combination of derived and primitive character states. This new taxon prompts a reassessment of early osteichthyan interrelationships, including the phylogenetic placement of psarolepids, which might branch from the osteichthyan-rather than sarcopterygian-stem.

Indexed as

Biological EvolutionAnimalsChinaFishesFossilsHyoid BoneJugular VeinsMandiblePhylogenySkullTomography, X-Ray Computed

Identifiers

PMID29203766
PMCPMC5715141

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.