Evidence map›Paper›PMID 26933218›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2016

Fuxianhuiid ventral nerve cord and early nervous system evolution in Panarthropoda.

Jie Yang, Javier Ortega-Hernández, Nicholas J Butterfield, Yu Liu, George S Boyan, Jin-Bo Hou, Tian Lan, Xi-Guang Zhang

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing 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

37 citing papers in PubMed.

  1. Article
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  5. Review
  6. Frontiers in neuroinformatics · 2024
    Article
  7. Musculature of an Early Cambrian cycloneuralian animal.Proceedings. Biological sciences · 2023
    Article
  8. Cambrian lobopodians shed light on the origin of the tardigrade body plan.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  9. Article
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  18. Review
  19. Tardigrades exhibit robust interlimb coordination across walking speeds and terrains.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  20. 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

8 authors.

Jie YangYunnan Key Laboratory for Paleobiology, Yunnan University, Kunming 650091, China;
Javier Ortega-HernándezDepartment of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ, United Kingdom;
Nicholas J ButterfieldDepartment of Earth Sciences, University of Cambridge, Cambridge CB2 3EQ, United Kingdom;
Yu LiuYunnan Key Laboratory for Paleobiology, Yunnan University, Kunming 650091, China; Developmental Neurobiology Group, Biocenter, Ludwig-Maximilians-Universität, 82152 Martinsried, Germany; GeoBio-Center Ludwig-Maximilians-Universität, Munich 80333, Germany;
George S BoyanDevelopmental Neurobiology Group, Biocenter, Ludwig-Maximilians-Universität, 82152 Martinsried, Germany;
Jin-Bo HouYunnan Key Laboratory for Paleobiology, Yunnan University, Kunming 650091, China;
Tian LanCollege of Resources and Environmental Engineering, Guizhou University, Guiyang 550003, China.
Xi-Guang ZhangYunnan Key Laboratory for Paleobiology, Yunnan University, Kunming 650091, China; xgzhang@ynu.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Panarthropods are typified by disparate grades of neurological organization reflecting a complex evolutionary history. The fossil record offers a unique opportunity to reconstruct early character evolution of the nervous system via exceptional preservation in extinct representatives. Here we describe the neurological architecture of the ventral nerve cord (VNC) in the upper-stem group euarthropod Chengjiangocaris kunmingensis from the early Cambrian Xiaoshiba Lagerstätte (South China). The VNC of C. kunmingensis comprises a homonymous series of condensed ganglia that extend throughout the body, each associated with a pair of biramous limbs. Submillimetric preservation reveals numerous segmental and intersegmental nerve roots emerging from both sides of the VNC, which correspond topologically to the peripheral nerves of extant Priapulida and Onychophora. The fuxianhuiid VNC indicates that ancestral neurological features of Ecdysozoa persisted into derived members of stem-group Euarthropoda but were later lost in crown-group representatives. These findings illuminate the VNC ground pattern in Panarthropoda and suggest the independent secondary loss of cycloneuralian-like neurological characters in Tardigrada and Euarthropoda.

Indexed as

FossilsAnimalsBiological EvolutionChinaGanglia, InvertebrateNervous SystemPhylogenySpecies SpecificityTardigradaCambrian ExplosionOnychophoraphylogenystem-group EuarthropodaXiaoshiba Lagerstätte

Identifiers

PMID26933218
PMCPMC4801254

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.