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Title: 'Xiphactinus audax' Leidy 1870 from the Puskwaskau Formation (Santonian to Campanian) of northwestern Alberta, Canada and the distribution of 'Xiphactinus' in North America
Contributor(s): Vavrek, Matt (author); Murray, Allison (author); Bell, Phil  (author)orcid 
Publication Date: 2016
Open Access: Yes
DOI: 10.18435/B5H596Open Access Link
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Abstract: 'Xiphactinus' is the largest teleost fish known from the Late Cretaceous of North America, and has been found across much of the Western Interior Basin. Despite extensive Late Cretaceous marine deposits occurring in Alberta, there has previously been only two possible records of 'Xiphactinus' from the province, neither of which has been diagnosable to the species level. We describe here a portion of the lower jaws, including teeth, of 'Xiphactinus audax' from northeast of Grande Prairie, Alberta. The fossil has large, thecodont teeth that are circular in cross section and lack any carinae, and are highly variable in their overall size. This fossil is the first diagnostic material of 'X. audax' from Alberta, and extends the range of the species by over a thousand kilometres. During the Late Cretaceous, the area the fossil was found in was near the Arctic Circle, and represents an important datapoint within the poorly known, northern portion of the Western Interior Basin.
Publication Type: Journal Article
Source of Publication: Vertebrate Anatomy Morphology Palaeontology, 1(1), p. 89-100
Publisher: University of Alberta
Place of Publication: Canada
ISSN: 2292-1389
Field of Research (FOR): 040308 Palaeontology (incl. Palynology)
060301 Animal Systematics and Taxonomy
Peer Reviewed: Yes
HERDC Category Description: C1 Refereed Article in a Scholarly Journal
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Appears in Collections:Journal Article
School of Environmental and Rural Science

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