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Scolosaurus (Ankylosauria) a valid taxon

From: Ben Creisler

A new online paper:

Paul Penkalski & William T. Blows (2013)
Scolosaurus cutleri (Ornithischia: Ankylosauria) from the Upper
Cretaceous Dinosaur Park Formation of Alberta, Canada.
Canadian Journal of Earth Sciences (advance online publication)
doi: 10.1139/cjes-2012-0098

The synonymy of the ankylosaurid dinosaur Scolosaurus with
Euoplocephalus has been widely accepted since the 1970s. However,
Scolosaurus cutleri exhibits differences which separate it from
Euoplocephalus tutus and Dyoplosaurus acutosquameus. Although the
holotype of Euoplocephalus is fragmentary, several other specimens can
be reliably referred to this taxon and thus used for comparison.
Scolosaurus differs from Euoplocephalus in cervical half-ring,
osteoderm, and forelimb morphology. Scolosaurus differs from
Dyoplosaurus primarily in pelvic morphology and osteoderm shape.
Recognition of Scolosaurus as a valid taxon adds to the growing
concept that the Upper Cretaceous ankylosaurid fauna of North America
was more diverse than previously thought.