Evidence map›Paper›PMID 24828016›Full record

ArticleScientific reports2014

An early Cambrian agglutinated tubular lophophorate with brachiopod characters.

Z-F Zhang, G-X Li, L E Holmer, G A Brock, U Balthasar, C B Skovsted, D-J Fu, X-L Zhang, H-Z Wang, A Butler and 5 more

Erratum issuedAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Scientific reports, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. The Cambrian cirratuliformProceedings. Biological sciences · 2023
    Article
  5. Article
  6. Are hyoliths Palaeozoic lophophorates?National science review · 2020
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Ecological innovations in the Cambrian and the origins of the crown group phyla.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2016
    Article
  13. Ediacaran skeletal metazoan interpreted as a lophophorate.Proceedings. Biological sciences · 2015
    Article
  14. Article
  15. Article
  16. Article
4 · The record

Corrections and comments

  • Erratum issued
5 · Who and what money

Authors and funding

15 authors.

Z-F Zhang1] Early Life Institute, State Key Laboratory of Continental Dynamics and Department of Geology, Northwest University, Xi'an, 710069, China [2] LPS, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, 210008, China.
G-X LiLPS, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, 210008, China.
L E HolmerUppsala University, Department of Earth Sciences, Palaeobiology, Villavägen 16, SE-752 36 Uppsala, Sweden.
G A BrockDepartment of Biological Sciences, Macquarie University, Sydney, New South Wales 2109, Australia.
U BalthasarUniversity of Glasgow, Department of Geographical and Earth Sciences, Gregory Building, Lilybank Gardens, G12 8QQ, Glasgow, United Kingdom.
C B SkovstedDepartment of Palaeobiology, Swedish Museum of Natural History, Box 50007, SE-104 05 Stockholm, Sweden.
D-J FuEarly Life Institute, State Key Laboratory of Continental Dynamics and Department of Geology, Northwest University, Xi'an, 710069, China.
X-L ZhangEarly Life Institute, State Key Laboratory of Continental Dynamics and Department of Geology, Northwest University, Xi'an, 710069, China.
H-Z WangUppsala University, Department of Earth Sciences, Palaeobiology, Villavägen 16, SE-752 36 Uppsala, Sweden.
A ButlerUppsala University, Department of Earth Sciences, Palaeobiology, Villavägen 16, SE-752 36 Uppsala, Sweden.
Z-L ZhangEarly Life Institute, State Key Laboratory of Continental Dynamics and Department of Geology, Northwest University, Xi'an, 710069, China.
C-Q CaoLPS, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, 210008, China.
J HanEarly Life Institute, State Key Laboratory of Continental Dynamics and Department of Geology, Northwest University, Xi'an, 710069, China.
J-N LiuEarly Life Institute, State Key Laboratory of Continental Dynamics and Department of Geology, Northwest University, Xi'an, 710069, China.
D-G ShuEarly Life Institute, State Key Laboratory of Continental Dynamics and Department of Geology, Northwest University, Xi'an, 710069, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The morphological disparity of lophotrochozoan phyla makes it difficult to predict the morphology of the last common ancestor. Only fossils of stem groups can help discover the morphological transitions that occurred along the roots of these phyla. Here, we describe a tubular fossil Yuganotheca elegans gen. et sp. nov. from the Cambrian (Stage 3) Chengjiang Lagerstätte (Yunnan, China) that exhibits an unusual combination of phoronid, brachiopod and tommotiid (Cambrian problematica) characters, notably a pair of agglutinated valves, enclosing a horseshoe-shaped lophophore, supported by a lower bipartite tubular attachment structure with a long pedicle with coelomic space. The terminal bulb of the pedicle provided anchorage in soft sediment. The discovery has important implications for the early evolution of lophotrochozoans, suggesting rooting of brachiopods into the sessile lophotrochozoans and the origination of their bivalved bauplan preceding the biomineralization of shell valves in crown brachiopods.

Indexed as

AnimalsBiological EvolutionChinaFossilsInvertebratesPhylogeny

Identifiers

PMID24828016
PMCPMC4021322

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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.