Dinosaur skeletal material from the mid-Cretaceous of Canada is rare; however, the Cenomanian-aged Dunvegan Formation of northeastern British Columbia and northwestern Alberta is rich with ichnofossils attributed to nodosaurid ankylosaurs. A long bone (Hudson's Hope Museum specimen HH 2017.010.002) collected in 1993 from the Murray River of northeastern British Columbia is identified here as an ankylosaur femur. Femoral measurements of the bone plotted against femoral measurements of major dinosaur clades, combined with observations on femoral features, indicate that the bone belongs to an ankylosaur. The specimen is too damaged to assign to Nodosauridae or Ankylosauridae. HH 2017.010.002 represents the first limb bone material recovered from the Dunvegan Formation; previous ankylosaur material described from the Dunvegan Formation includes associated vertebrae and ribs from British Columbia and osteoderms from Alberta, as well as the presumed nodosaurid footprints Tetrapodosaurus borealis Sternberg, 1932. The Cenomanian is a time of great ecological change in North America, including the possible extirpation of ankylosaurid ankylosaurs. Fossils from the Dunvegan Formation can thus yield important insight into the responses of fauna to this major transition.
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Research Article|
February 21, 2024
An ankylosaur femur from the mid-Cretaceous of the peace region of northeastern British Columbia
Emily G. Cross;
(Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Writing – original draft, Writing – review & editing)
a
8205School of Earth and Ocean Science, University of Victoria
, Victoria, BC V7P 5C2, CanadaCorresponding author: Emily G. Cross (email: [email protected])
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Victoria M. Arbour
Victoria M. Arbour
(Conceptualization, Funding acquisition, Supervision, Writing – original draft, Writing – review & editing)
a
8205School of Earth and Ocean Science, University of Victoria
, Victoria, BC V7P 5C2, Canadab
Royal BC Museum
, Victoria, BC V8V 9W2, Canada
Search for other works by this author on:
Emily G. Cross
Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Writing – original draft, Writing – review & editing
a
8205School of Earth and Ocean Science, University of Victoria
, Victoria, BC V7P 5C2, Canada
Victoria M. Arbour
Conceptualization, Funding acquisition, Supervision, Writing – original draft, Writing – review & editing
a
8205School of Earth and Ocean Science, University of Victoria
, Victoria, BC V7P 5C2, Canadab
Royal BC Museum
, Victoria, BC V8V 9W2, CanadaCorresponding author: Emily G. Cross (email: [email protected])
Publisher: Canadian Science Publishing
Received:
30 Sep 2023
Accepted:
07 Feb 2024
Accepted Manuscript:
21 Feb 2024
First Online:
13 Jun 2024
Online ISSN: 1480-3313
Print ISSN: 0008-4077
Funding
- Funder(s):Natural Sciences and Engineering Research Council of Canada
- Award Id(s): DGECR-2020-00149,RGPIN-2020-04012
- Award Id(s):
- Funder(s):Dinosaur Research Institute
The Author(s)
Permission for reuse (free in most cases) can be obtained from copyright.com.
Canadian Journal of Earth Sciences (2024) 61 (6): 678–685.
Article history
Received:
30 Sep 2023
Accepted:
07 Feb 2024
Accepted Manuscript:
21 Feb 2024
First Online:
13 Jun 2024
Citation
Emily G. Cross, Victoria M. Arbour; An ankylosaur femur from the mid-Cretaceous of the peace region of northeastern British Columbia. Canadian Journal of Earth Sciences 2024;; 61 (6): 678–685. doi: https://doi.org/10.1139/cjes-2023-0118
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