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Line 33: In 1999, Penkalski and Dodson concluded ''Ceratops'' is a [[nomen dubium]] because the material is too meager. They add that ''[[Avaceratops]]'' appears closely related and may even be a juvenile ''Ceratops'' but there is not enough material to prove it.<ref name=avaceratops>{{cite journal\|doi=10.1080/02724634.1999.10011182\|author=Penkalski, P & Dodson, P\|year=1999\|title=The morphology and systematics of ''Avaceratops'', a primitive horned dinosaur from the Judith River Formation (Late Campanian) of Montana, with the description of a second skull.\|journal=Journal of Vertebrate Paleontology\|volume=19\|issue=4\|pages=692–711}}</ref> In 2005, remarkably well preserved cranial and post cranial elements of a [http://en.wikipedia.org/wiki/Judith_River_Formation Judithian] ceratopsian were discovered in Fergus County, Montana. Examination suggests close affinity with C. montanus. The locality has been determined to be on, or in close proximity to the stratigraphic layer of C. montanus, and not too many miles away. The fossil has since been meticulously prepared, studied and evaluated. A team of writers is currently (Q1, 2011) in the process of preparing for publication. This specimen may or may not be referred to C. montanus; debate on the merits of referring to a nomen dubium vs a new species designation continue. ==Species==

Ceratops: Difference between revisions