Probable Ankylosaur Ossicles from the Middle Cenomanian Dunvegan Formation of Northwestern Alberta, Canada

A sample of six probable fragmentary ankylosaur ossicles, collected from Cenomanian deposits of the Dunvegan Formation along the Peace River, represent one of the first dinosaurian skeletal fossils reported from pre-Santonian deposits in Alberta. Specimens were identified as ankylosaur by means of a...

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Bibliographic Details
Published in:PLoS ONE
Main Authors: Burns, Michael E., Vavrek, Matthew J.
Format: Text
Language:English
Published: Public Library of Science 2014
Subjects:
Online Access:http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4015975
http://www.ncbi.nlm.nih.gov/pubmed/24816807
https://doi.org/10.1371/journal.pone.0096075
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Summary:A sample of six probable fragmentary ankylosaur ossicles, collected from Cenomanian deposits of the Dunvegan Formation along the Peace River, represent one of the first dinosaurian skeletal fossils reported from pre-Santonian deposits in Alberta. Specimens were identified as ankylosaur by means of a palaeohistological analysis. The primary tissue is composed of zonal interwoven structural fibre bundles with irregularly-shaped lacunae, unlike the elongate lacunae of the secondary lamellar bone. The locality represents the most northerly Cenomanian occurrence of ankylosaur skeletal remains. Further fieldwork in under-examined areas of the province carries potential for additional finds.