Skeletal correlates for body mass estimation in modern and fossil flying birds.

Scaling relationships between skeletal dimensions and body mass in extant birds are often used to estimate body mass in fossil crown-group birds, as well as in stem-group avialans. However, useful statistical measurements for constraining the precision and accuracy of fossil mass estimates are rarel...

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Autores principales:	Daniel J Field, Colton Lynner, Christian Brown, Simon A F Darroch
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c85f5774149545c9997543f056f1c9ec
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spelling	oai:doaj.org-article:c85f5774149545c9997543f056f1c9ec2021-11-18T08:44:07ZSkeletal correlates for body mass estimation in modern and fossil flying birds.1932-620310.1371/journal.pone.0082000https://doaj.org/article/c85f5774149545c9997543f056f1c9ec2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24312392/?tool=EBIhttps://doaj.org/toc/1932-6203Scaling relationships between skeletal dimensions and body mass in extant birds are often used to estimate body mass in fossil crown-group birds, as well as in stem-group avialans. However, useful statistical measurements for constraining the precision and accuracy of fossil mass estimates are rarely provided, which prevents the quantification of robust upper and lower bound body mass estimates for fossils. Here, we generate thirteen body mass correlations and associated measures of statistical robustness using a sample of 863 extant flying birds. By providing robust body mass regressions with upper- and lower-bound prediction intervals for individual skeletal elements, we address the longstanding problem of body mass estimation for highly fragmentary fossil birds. We demonstrate that the most precise proxy for estimating body mass in the overall dataset, measured both as coefficient determination of ordinary least squares regression and percent prediction error, is the maximum diameter of the coracoid's humeral articulation facet (the glenoid). We further demonstrate that this result is consistent among the majority of investigated avian orders (10 out of 18). As a result, we suggest that, in the majority of cases, this proxy may provide the most accurate estimates of body mass for volant fossil birds. Additionally, by presenting statistical measurements of body mass prediction error for thirteen different body mass regressions, this study provides a much-needed quantitative framework for the accurate estimation of body mass and associated ecological correlates in fossil birds. The application of these regressions will enhance the precision and robustness of many mass-based inferences in future paleornithological studies.Daniel J FieldColton LynnerChristian BrownSimon A F DarrochPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 11, p e82000 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Daniel J Field Colton Lynner Christian Brown Simon A F Darroch Skeletal correlates for body mass estimation in modern and fossil flying birds.
description	Scaling relationships between skeletal dimensions and body mass in extant birds are often used to estimate body mass in fossil crown-group birds, as well as in stem-group avialans. However, useful statistical measurements for constraining the precision and accuracy of fossil mass estimates are rarely provided, which prevents the quantification of robust upper and lower bound body mass estimates for fossils. Here, we generate thirteen body mass correlations and associated measures of statistical robustness using a sample of 863 extant flying birds. By providing robust body mass regressions with upper- and lower-bound prediction intervals for individual skeletal elements, we address the longstanding problem of body mass estimation for highly fragmentary fossil birds. We demonstrate that the most precise proxy for estimating body mass in the overall dataset, measured both as coefficient determination of ordinary least squares regression and percent prediction error, is the maximum diameter of the coracoid's humeral articulation facet (the glenoid). We further demonstrate that this result is consistent among the majority of investigated avian orders (10 out of 18). As a result, we suggest that, in the majority of cases, this proxy may provide the most accurate estimates of body mass for volant fossil birds. Additionally, by presenting statistical measurements of body mass prediction error for thirteen different body mass regressions, this study provides a much-needed quantitative framework for the accurate estimation of body mass and associated ecological correlates in fossil birds. The application of these regressions will enhance the precision and robustness of many mass-based inferences in future paleornithological studies.
format	article
author	Daniel J Field Colton Lynner Christian Brown Simon A F Darroch
author_facet	Daniel J Field Colton Lynner Christian Brown Simon A F Darroch
author_sort	Daniel J Field
title	Skeletal correlates for body mass estimation in modern and fossil flying birds.
title_short	Skeletal correlates for body mass estimation in modern and fossil flying birds.
title_full	Skeletal correlates for body mass estimation in modern and fossil flying birds.
title_fullStr	Skeletal correlates for body mass estimation in modern and fossil flying birds.
title_full_unstemmed	Skeletal correlates for body mass estimation in modern and fossil flying birds.
title_sort	skeletal correlates for body mass estimation in modern and fossil flying birds.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/c85f5774149545c9997543f056f1c9ec
work_keys_str_mv	AT danieljfield skeletalcorrelatesforbodymassestimationinmodernandfossilflyingbirds AT coltonlynner skeletalcorrelatesforbodymassestimationinmodernandfossilflyingbirds AT christianbrown skeletalcorrelatesforbodymassestimationinmodernandfossilflyingbirds AT simonafdarroch skeletalcorrelatesforbodymassestimationinmodernandfossilflyingbirds
_version_	1718421408986431488

Skeletal correlates for body mass estimation in modern and fossil flying birds.

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