Evidence map›Paper›PMID 23340425›Full record

ArticleNature communications2013

The oldest echinoderm faunas from Gondwana show that echinoderm body plan diversification was rapid.

Andrew B Smith, Samuel Zamora, J Javier Álvaro

Abstract read
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In one paragraph

Article in Nature communications, 2013. 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
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  5. Article
  6. Article
  7. Article
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  9. Article
  10. Trilobite evolutionary rates constrain the duration of the Cambrian explosion.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  11. Article
  12. Article
  13. Genome-wide use of high- and low-affinity Tbrain transcription factor binding sites during echinoderm development.Proceedings of the National Academy of Sciences of the United States of America · 2017
    Article
  14. Article
  15. Article
  16. The biology of the germ line in echinoderms.Molecular reproduction and development · 2014
    Review
  17. Origin and development of the germ line in sea stars.Genesis (New York, N.Y. : 2000) · 2014
    Review
  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

3 authors.

Andrew B SmithDepartment of Palaeontology, Natural History Museum, London SW75BD, UK. a.smith@nhm.ac.uk
Samuel Zamora
J Javier Álvaro

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The earliest fossil echinoderms have, until now, come almost exclusively from North America and are represented by few taxa, all of which have a radiate body plan. Here we report the discovery of two new echinoderm faunas from the early part of the Cambrian of Morocco (West Gondwana). The former represents the oldest echinoderm fauna from Gondwana, approximately equivalent in age to those from North America, and the latter the oldest diversified fauna from Gondwana. In both cases, the appearance of well-preserved echinoderms coincides with a change in palaeogeographic regime. The presence of four markedly different echinoderm body plans in these earliest faunas indicates that considerable diversification had already taken place by 510 Ma. Yet all share the same distinctive biomineralized skeleton that, based on the fossil record and ocean geochemistry, probably evolved just 10-15 my earlier. This suggests that a rapid rate of morphological divergence took place during the initial stages of echinoderm evolution.

Indexed as

BiodiversityFossilsAnimalsEchinodermataGeographyMoroccoTime Factors

Identifiers

PMID23340425

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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.