Michael Barton wrote:
http://www.bioone.org/perlserv/?request=get-abstract&doi=10.1660%2F0022-8443%282007%>29110%5B1%3ASOTANC%5D2.0.CO%3B2
Transactions of the Kansas Academy of Science Article: pp. 1?9
Skull of the ankylosaur Niobrarasaurus coleu (Ankylosauria: Nodosauridae) from the Smoky Hill Chalk (Coniacian) of western Kansas
Kenneth Carpenter1, Michael J. Everhart 2
https://scientists.dmns.org/sites/kencarpenter/default.aspx https://scientists.dmns.org/sites/kencarpenter/PDFs%20of%20publications/Forms/AllItems.aspx
Cheers
Tim