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Title: The mapping and differentiation of biological and environmental elemental signatures in the fossil remains of a 50 million year old bird

Journal Article · · Journal of Analytical Atomic Spectrometry
DOI:https://doi.org/10.1039/C4JA00395K· OSTI ID:1214947
 [1];  [1];  [2];  [1];  [1];  [3];  [3];  [3];  [4];  [1];  [1];  [1];  [1];  [5]
  1. Univ. of Manchester (United Kingdom)
  2. American Museum of Natural History (AMNH), New York, NY (United States). Division of Paleontology
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. Diamond Light Source, Didcot (United Kingdom)
  5. Univ. of Manchester (United Kingdom); American Museum of Natural History (AMNH), New York, NY (United States). Division of Paleontology

The preservation of fossils reflects the interplay of inorganic and organic chemical processes, which should be clearly differentiated to make interpretations about the biology of extinct organisms. A new coliiformes bird (mouse bird) from the ~50 million year old Green River Formation (Wyoming, USA) has here been analysed using synchrotron X-ray fluorescence and environmental scanning electron microscopy with an attached X-ray energy dispersive system (ESEM-EDS). The concentration and distribution of 16 elements (Si, P, S, Cl, K, Ca, Ti, Mg, Fe, Ni, Cu, Zn, As, Br, Ba, Hg) has been mapped for individual points on the sample. S, Cu and Zn map distinctly within visibly preserved feathers and X-ray Absorption Spectroscopy (XAS) shows that S and Cu within the feathers are organically bound in a similar manner to modern feathers. The morphological preservation of the feathers, on both macro- and microscopic scales, is variable throughout the fossil and the differences in the lateral microfacies have resulted in a morphological preservation gradient. This study clearly differentiates endogenous organic remains from those representing exogenous overprinted geochemical precipitates and illustrates the chemical complexity of the overall taphonomic process.

Research Organization:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
NE/J023426/1
OSTI ID:
1214947
Journal Information:
Journal of Analytical Atomic Spectrometry, Vol. 30, Issue 3; ISSN 0267-9477
Publisher:
Royal Society of ChemistryCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 25 works
Citation information provided by
Web of Science

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Cited By (8)

Paleoproteomics of Mesozoic Dinosaurs and Other Mesozoic Fossils journal July 2019
Pheomelanin pigment remnants mapped in fossils of an extinct mammal journal May 2019
Molecular composition and ultrastructure of Jurassic paravian feathers journal August 2015
New applications of spectroscopy techniques reveal phylogenetically significant soft tissue residue in Paleozoic conodonts journal January 2018
Molecular evidence of keratin and melanosomes in feathers of the Early Cretaceous bird Eoconfuciusornis journal November 2016
Tissue-specific geometry and chemistry of modern and fossilized melanosomes reveal internal anatomy of extinct vertebrates journal August 2019
Root‐induced soil deformation influences Fe, S and P: rhizosphere chemistry investigated using synchrotron XRF and XANES journal November 2019
New occurrences of fossilized feathers: systematics and taphonomy of the Santana Formation of the Araripe Basin (Cretaceous), NE, Brazil journal January 2016

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