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2013
Journal article
Finite element modelling versus classic beam theory: comparing methods for stress estimation in a morphologically diverse sample of vertebrate long bones
Classic beam theory is frequently used in biomechanics to model the stress behaviour of vertebrate long bones, particularly when creating intraspecific scaling models. Although methodologically straightforward, classic beam theory requires complex irregular bones to be approximated as slender beams, and the errors associated with simplifying complex organic structures to such...Brassey, Charlotte A ; Margetts, L ; Kitchener, Andrew C ; Withers, P J ; Manning, Phillip L …
cross-sectional asymmetry, biomechanics, curvature, Finite element analysis, and beam theory
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2017
Journal article
A fossil protein chimera; difficulties in discriminating dinosaur peptide sequences from modern cross-contamination
A decade ago, reports that organic-rich soft tissue survived from dinosaur fossils were apparently supported by proteomics-derived sequence information of exceptionally well-preserved bone. This initial claim to the sequencing of endogenous collagen peptides from an approximately 68 Myr Tyrannosaurus rex fossil was highly controversial, largely on the grounds of potential...Buckley, M ; Warwood, S ; van Dongen, B ; Kitchener, Andrew C ; Manning, Phillip L
palaeoproteomics, Tyrannosaurus, ancient collagen, dinosaur protein, Brachylophosaurus, and ostrich
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2016
Journal article
Convex-hull mass estimates of the dodo (Raphus cucullatus): application of a CT-based mass estimation technique
The external appearance of the dodo (Raphus cucullatus, Linnaeus, 1758) has been a source of considerable intrigue, as contemporaneous accounts or depictions are rare. The body mass of the dodo has been particularly contentious, with the flightless pigeon alternatively reconstructed as slim or fat depending upon the skeletal metric used...Brassey, Charlotte A ; O’Mahoney, T G ; Kitchener, Andrew C ; Manning, Phillip L ; Sellers, William I
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2013
Journal article
The role of cross-sectional geometry, curvature and limb posture in maintaining equal safety factors: A computed tomography study
The limb bones of an elephant are considered to experience similar peak locomotory stresses as a shrew. "Safety factors" are maintained across the entire range of body masses through a combination of robusticity of long bones, postural variation, and modification of gait. The relative contributions of these variables remain uncertain....Brassey, Charlotte A ; Kitchener, Andrew C ; Withers, P J ; Manning, Phillip L ; Sellers, William I
posture, force, safety factors, cross-sectional geometry, and effective mechanical advantage (EMA)