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Pachycephalosaurid cranial remains from Maastrichtian Scollard Formation, Alberta

Ben Creisler

A new paper:

David C. Evans, Matthew J. Vavrek & Hans C. E. Larsson (2015)
Pachycephalosaurid (Dinosauria: Ornithischia) cranial remains from the
latest Cretaceous (Maastrichtian) Scollard Formation of Alberta,
Palaeobiodiversity and Palaeoenvironments (advance online publication)
DOI: 10.1007/s12549-015-0188-x

Maastrichtian terrestrial deposits throughout Laramidia (western North
America) have yielded a wealth of ancient dinosaur diversity. Yet,
despite intense collecting in some areas, latitudinal sampling
unevenness still limits biogeographic studies, making new records of
dinosaur occurrences significant. Here, we describe the first
non-dental pachycephalosaurid cranial material from the late
Maastrichtian Scollard Formation of central Alberta, Canada, which
allows more precise taxonomic identification of pachycephalosaurids
from the northern part of the Western Interior Basin during this time
interval. A domed parietal, although weathered, retains several
features that allow it to be referred to the tribe Pachycephalosaurini
within the subfamily Pachycephalosaurinae, and likely to the genus
Pachycephalosaurus. This specimen provides further support for the
suggestion that late Maastrichtian dinosaur communities were generally
cosmopolitan with no discrete faunal provinces in Laramidia, and
underscores the importance of collecting fragmentary, but identifiable
remains that often go unreported.