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Further analysis of a Late Jurassic dinosaur bone-bed from the Morrison Formation of Montana, USA, with a computed three-dimensional reconstruction

Published online by Cambridge University Press:  23 September 2013

Glenn W. Storrs ,
Sara E. Oser  and
Mark Aull
Glenn W. Storrs
Affiliation:
Cincinnati Museum Center, 1301 Western Avenue, Cincinnati, OH 45203, USA. Email:gstorrs@cincymuseum.org
Sara E. Oser
Affiliation:
Montana State University, Department of Earth Sciences, P.O Box 173480, Bozeman, MT 59717-3480, USA. Email: sara.oser@msu.montana.edu
Mark Aull
Affiliation:
University of Cincinnati, College of Engineering and Applied Science, School of Aerospace Systems, 2850 Campus Way, Cincinnati, OH 45221-0070, USA. Email: markaull@hotmail.com
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Abstract

A Late Jurassic sauropod bone-bed comprising thousands of individual skeletal elements in the Morrison Formation of Montana, USA, is re-analysed to further elucidate its taphonomic history. New data gained from detailed contextual sampling is assembled and presented to test the hypothesis of a drought-induced, mass-mortality assemblage, and its subsequent depositional emplacement by a debris flow. Large dinosaur bone-beds are well-known in the Morrison, yet the Mother's Day Quarry site is unique for the formation in depicting an apparent debris flow deposit. Use of a computer program tailored to the data allows three-dimensional reconstruction of the bone-bed and recreates the palaeoslope of the deposit, adding support to the debris flow hypothesis. Such digital manipulation of field data may allow a deeper understanding of other bone-bed origination events.

Keywords

DinosauriaDiplodocuscomputer reconstructiondebris flowMATLABSauropodataphonomyvertebrate palaeontology
Type
Articles
Information
Earth and Environmental Science Transactions of The Royal Society of Edinburgh , Volume 103 , Issue 3-4: The Full Profession: A Celebration of the Life and Career of Wann Langston, Jr., Quintessential Vertebrate Palaeontologist , September 2012 , pp. 443 - 458
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Copyright © The Royal Society of Edinburgh 2013 

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