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Title: Microstructure, crystallography and diagenetic alteration in fossil ostrich eggshells from Upper Palaeolithic sites of Indian peninsular region
Authors: Jain S.
Bajpai, Sunil
Kumar G.
Pruthi V.
Published in: Micron
Abstract: Biominerals studies are of importance as they provide an understanding of natural evolutionary processes. In this study we have investigated the fossil ostrich eggshells using Scanning Electron Microscopy (SEM), X-ray Diffraction (XRD) and Electron Backscatter Diffraction (EBSD). SEM studies demonstrated the ultrastructure of fossil eggshells and formation of calcified cuticular layer. The presence of calcified cuticle layer in eggshell is the basis for ancient DNA studies as it contains preserved biomolecules.EBSD accentuates the crystallographic structure of the ostrich eggshells with sub-micrometer resolution. It is a non-destructive tool for evaluating the extent of diagenesis in a biomineral. EBSD analysis revealed the presence of dolomite in the eggshells. This research resulted in the complete recognition of the structure of ostrich eggshells as well as the nature and extent of diagenesis in these eggshells which is vital for genetic and paleoenvironmental studies. © 2016.
Citation: Micron (2016), 84(): 72-78
Issue Date: 2016
Publisher: Elsevier Ltd
Keywords: Diagenesis
ISSN: 9684328
Author Scopus IDs: 57209870089
Author Affiliations: Jain, S., Department of Biotechnology, Indian Institute of Technology, Roorkee, UK, 247667, India
Bajpai, S., Department of Earth Sciences, Indian Institute of Technology, Roorkee, UK, 247667, India, Birbal Sahni Institute of Palaeobotany, Lucknow, UP, 226007, India
Kumar, G., Dayalbagh Educational Institute, Dayalbagh, Agra, UP, 282005, India
Pruthi, V., Department of Biotechnology, Indian Institute of Technology, Roorkee, UK, 247667, India
Funding Details: We acknowledge the much-needed help received from the Indian Institute of Technology, Roorkee for Scanning Electron Microscopy and Ben Passey, Mantong Zhao, Johns Hopkins University for X-ray Diffraction analysis. We are really thankful to Alberto Pérez-Huerta for conducting EBSD experiments and analyzing the data at The University of Alabama. For the financial support, we would like to acknowledge the Ministry of Human resource and Development (MHRD) , Fulbright Nehru Doctoral Research Fellowship (USIEF) and University Grants Commission (UGC), New Delhi .
Corresponding Author: Jain, S.; Department of Biotechnology, Indian Institute of TechnologyIndia; email:
Appears in Collections:Journal Publications [ES]

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