Paul Penkalski
Acta Palaeontologica Polonica 59 (3), 2014: 617-634 doi: http://dx.doi.org/10.4202/app.2012.0125
Key words: Dinosauria, Ornithischia, Ankylosauridae, ankylosaur, systematics, Campanian, Cretaceous, Two Medicine Formation, Montana, USA.
Paul Penkalski [pgpenkal@gmail.com], The Geology Museum, 1215 W. Dayton St., Madison, WI. 53706, USA.
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