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Cambrian suspension-feeding tubicolous hemichordates

Overview of attention for article published in BMC Biology, July 2016
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • Among the highest-scoring outputs from this source (#20 of 1,961)
  • High Attention Score compared to outputs of the same age (99th percentile)

Mentioned by

26 news outlets
3 blogs
43 tweeters
3 Facebook pages
8 Wikipedia pages


35 Dimensions

Readers on

44 Mendeley
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Cambrian suspension-feeding tubicolous hemichordates
Published in
BMC Biology, July 2016
DOI 10.1186/s12915-016-0271-4
Pubmed ID

Karma Nanglu, Jean-Bernard Caron, Simon Conway Morris, Christopher B. Cameron


The combination of a meager fossil record of vermiform enteropneusts and their disparity with the tubicolous pterobranchs renders early hemichordate evolution conjectural. The middle Cambrian Oesia disjuncta from the Burgess Shale has been compared to annelids, tunicates and chaetognaths, but on the basis of abundant new material is now identified as a primitive hemichordate. Notable features include a facultative tubicolous habit, a posterior grasping structure and an extensive pharynx. These characters, along with the spirally arranged openings in the associated organic tube (previously assigned to the green alga Margaretia), confirm Oesia as a tiered suspension feeder. Increasing predation pressure was probably one of the main causes of a transition to the infauna. In crown group enteropneusts this was accompanied by a loss of the tube and reduction in gill bars, with a corresponding shift to deposit feeding. The posterior grasping structure may represent an ancestral precursor to the pterobranch stolon, so facilitating their colonial lifestyle. The focus on suspension feeding as a primary mode of life amongst the basal hemichordates adds further evidence to the hypothesis that suspension feeding is the ancestral state for the major clade Deuterostomia.

Twitter Demographics

The data shown below were collected from the profiles of 43 tweeters who shared this research output. Click here to find out more about how the information was compiled.

Mendeley readers

The data shown below were compiled from readership statistics for 44 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
United Kingdom 1 2%
Germany 1 2%
Unknown 42 95%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 10 23%
Student > Bachelor 8 18%
Student > Master 5 11%
Researcher 5 11%
Professor > Associate Professor 2 5%
Other 4 9%
Unknown 10 23%
Readers by discipline Count As %
Agricultural and Biological Sciences 13 30%
Earth and Planetary Sciences 6 14%
Biochemistry, Genetics and Molecular Biology 5 11%
Environmental Science 3 7%
Engineering 3 7%
Other 4 9%
Unknown 10 23%

Attention Score in Context

This research output has an Altmetric Attention Score of 261. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 16 November 2022.
All research outputs
of 22,545,203 outputs
Outputs from BMC Biology
of 1,961 outputs
Outputs of similar age
of 276,749 outputs
Outputs of similar age from BMC Biology
of 1 outputs
Altmetric has tracked 22,545,203 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 99th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 1,961 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 21.5. This one has done particularly well, scoring higher than 98% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 276,749 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 99% of its contemporaries.
We're also able to compare this research output to 1 others from the same source and published within six weeks on either side of this one. This one has scored higher than all of them