Imperial College London

Professor Molly Stevens FREng

Faculty of EngineeringDepartment of Materials

Prof of Biomedical Materials&Regenerative Medicine
 
 
 
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Contact

 

+44 (0)20 7594 6804m.stevens

 
 
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Location

 

208Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Bertazzo:2015:10.1038/ncomms8352,
author = {Bertazzo, S and Maidment, S and Kallepitis, C and Fearn, S and Stevens, MM and Xie, HN},
doi = {10.1038/ncomms8352},
journal = {Nature Communications},
title = {Fibres and cellular structures preserved in 75-million–year-old dinosaur specimens},
url = {http://dx.doi.org/10.1038/ncomms8352},
volume = {6},
year = {2015}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - Exceptionally preserved organic remains are known throughout the vertebrate fossil record, and recently, evidence has emerged that such soft tissue might contain original components. We examined samples from eight Cretaceous dinosaur bones using nano-analytical techniques; the bones are not exceptionally preserved and show no external indication of soft tissue. In one sample, we observe structures consistent with endogenous collagen fibre remains displaying ~67 nm banding, indicating the possible preservation of the original quaternary structure. Using ToF-SIMS, we identify amino-acid fragments typical of collagen fibrils. Furthermore, we observe structures consistent with putative erythrocyte remains that exhibit mass spectra similar to emu whole blood. Using advanced material characterization approaches, we find that these putative biological structures can be well preserved over geological timescales, and their preservation is more common than previously thought. The preservation of protein over geological timescales offers the opportunity to investigate relationships, physiology and behaviour of long extinct animals.
AU - Bertazzo,S
AU - Maidment,S
AU - Kallepitis,C
AU - Fearn,S
AU - Stevens,MM
AU - Xie,HN
DO - 10.1038/ncomms8352
PY - 2015///
SN - 2041-1723
TI - Fibres and cellular structures preserved in 75-million–year-old dinosaur specimens
T2 - Nature Communications
UR - http://dx.doi.org/10.1038/ncomms8352
UR - http://hdl.handle.net/10044/1/23666
VL - 6
ER -