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Perimortem fractures in Lucy suggest mortality from fall out of tall tree

Overview of attention for article published in Nature, August 2016
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About this Attention Score

  • In the top 5% of all research outputs scored by Altmetric
  • High Attention Score compared to outputs of the same age (99th percentile)
  • High Attention Score compared to outputs of the same age and source (99th percentile)

Mentioned by

news
181 news outlets
blogs
22 blogs
twitter
410 tweeters
facebook
25 Facebook pages
wikipedia
4 Wikipedia pages
googleplus
9 Google+ users
reddit
1 Redditor
video
3 video uploaders

Readers on

mendeley
77 Mendeley
Title
Perimortem fractures in Lucy suggest mortality from fall out of tall tree
Published in
Nature, August 2016
DOI 10.1038/nature19332
Pubmed ID
Authors

John Kappelman, Richard A. Ketcham, Stephen Pearce, Lawrence Todd, Wiley Akins, Matthew W. Colbert, Mulugeta Feseha, Jessica A. Maisano, Adrienne Witzel, Kappelman, John, Ketcham, Richard A, Pearce, Stephen, Todd, Lawrence, Akins, Wiley, Colbert, Matthew W, Feseha, Mulugeta, Maisano, Jessica A, Witzel, Adrienne

Abstract

The Pliocene fossil 'Lucy' (Australopithecus afarensis) was discovered in the Afar region of Ethiopia in 1974 and is among the oldest and most complete fossil hominin skeletons discovered. Here we propose, on the basis of close study of her skeleton, that her cause of death was a vertical deceleration event or impact following a fall from considerable height that produced compressive and hinge (greenstick) fractures in multiple skeletal elements. Impacts that are so severe as to cause concomitant fractures usually also damage internal organs; together, these injuries are hypothesized to have caused her death. Lucy has been at the centre of a vigorous debate about the role, if any, of arboreal locomotion in early human evolution. It is therefore ironic that her death can be attributed to injuries resulting from a fall, probably out of a tall tree, thus offering unusual evidence for the presence of arborealism in this species.

Twitter Demographics

The data shown below were collected from the profiles of 410 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 77 Mendeley readers of this research output. Click here to see the associated Mendeley record.

Geographical breakdown

Country Count As %
Brazil 1 1%
Ireland 1 1%
United States 1 1%
Unknown 74 96%

Demographic breakdown

Readers by professional status Count As %
Student > Bachelor 18 23%
Student > Ph. D. Student 16 21%
Student > Master 10 13%
Other 8 10%
Professor 7 9%
Other 18 23%
Readers by discipline Count As %
Agricultural and Biological Sciences 22 29%
Social Sciences 20 26%
Arts and Humanities 10 13%
Earth and Planetary Sciences 6 8%
Environmental Science 6 8%
Other 13 17%

Attention Score in Context

This research output has an Altmetric Attention Score of 1858. 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 09 May 2017.
All research outputs
#314
of 7,731,394 outputs
Outputs from Nature
#89
of 46,251 outputs
Outputs of similar age
#25
of 246,307 outputs
Outputs of similar age from Nature
#9
of 982 outputs
Altmetric has tracked 7,731,394 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 46,251 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 71.6. This one has done particularly well, scoring higher than 99% 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 246,307 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 982 others from the same source and published within six weeks on either side of this one. This one has done particularly well, scoring higher than 99% of its contemporaries.