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Quantitative diagenetic analyses of Edmontosaurus regalis (Dinosauria, Hadrosauridae) postcranial elements from the Danek Bonebed, Upper Cretaceous Horseshoe Canyon Formation, Edmonton, Alberta, Canada; implications for allometric studies of fossil organisms

Mackenzie Baert, Michael E. Burns and Philip J. Currie
Quantitative diagenetic analyses of Edmontosaurus regalis (Dinosauria, Hadrosauridae) postcranial elements from the Danek Bonebed, Upper Cretaceous Horseshoe Canyon Formation, Edmonton, Alberta, Canada; implications for allometric studies of fossil organisms (in The Danek Edmontosaurus bonebed; new insights on the systematics, biogeography, and palaeoecology of Late Cretaceous dinosaur communities, Michael E. Burns (organizer), Philip J. Currie (organizer), Eva B. Koppelhus (organizer), Victoria M. Arbour (editor), Andrew A. Farke (editor) and Michael J. Ryan (editor))
Canadian Journal of Earth Sciences = Revue Canadienne des Sciences de la Terre (November 2014) 51 (11): 1007-1016

Abstract

For fossil assemblages, quantitative size and shape studies are often complicated by diagenetic distortion. Different vertebrate elements, although subjected to similar burial stresses, exhibit deformations based upon their original shapes; this hypothesis is tested here by quantitatively comparing deformed humeri and femora from the Danek Bonebed (a monodominant Edmontosaurus regalis bonebed from the upper Campanian Horseshoe Canyon Formation in Edmonton, Alberta, Canada) with samples of undeformed humeri and femora from modern and fossil assemblages. Analyses suggest that at the Danek Bonebed a strong relationship exists between element length and circumference despite being distorted by crushing deformation. Major and minor axes of the midshaft cross section, however, were not uniformly distorted. Although their anatomical position did not change, the major axis became longer relative to the minor axis in distorted specimens. A regression based on the undeformed humeri was not able to accurately predict circumference in the Danek humeri. Further study might quantify the deformation of other bones in the Danek Bonebed and could be extended to other assemblages and genera. Caution should be taken when conducting studies in which diagenetic crushing may have altered morphological features of fossil vertebrate remains.


ISSN: 0008-4077
EISSN: 1480-3313
Coden: CJESAP
Serial Title: Canadian Journal of Earth Sciences = Revue Canadienne des Sciences de la Terre
Serial Volume: 51
Serial Issue: 11
Title: Quantitative diagenetic analyses of Edmontosaurus regalis (Dinosauria, Hadrosauridae) postcranial elements from the Danek Bonebed, Upper Cretaceous Horseshoe Canyon Formation, Edmonton, Alberta, Canada; implications for allometric studies of fossil organisms
Title: The Danek Edmontosaurus bonebed; new insights on the systematics, biogeography, and palaeoecology of Late Cretaceous dinosaur communities
Author(s): Baert, MackenzieBurns, Michael E.Currie, Philip J.
Author(s): Burns, Michael E.organizer
Author(s): Currie, Philip J.organizer
Author(s): Koppelhus, Eva B.organizer
Author(s): Arbour, Victoria M.editor
Author(s): Farke, Andrew A.editor
Author(s): Ryan, Michael J.editor
Affiliation: University of Alberta, Department of Biological Sciences, Edmonton, AB, Canada
Affiliation: University of Alberta, Department of Biological Sciences, Edmonton, AB, Canada
Pages: 1007-1016
Published: 201411
Text Language: English
Summary Language: French
Publisher: National Research Council of Canada, Ottawa, ON, Canada
References: 35
Accession Number: 2015-007762
Categories: Vertebrate paleontology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: Includes appendix
Illustration Description: illus. incl. 3 tables
N53°34'00" - N53°34'00", W113°25'00" - W113°25'00"
Secondary Affiliation: Raymond M. Alf Museum of Paleontology, USA, United StatesCleveland Museum of Natural History, USA, United States
Country of Publication: Canada
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 201504
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