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I changed the derivation of the name from "one horn" to "single stem", which is the way it's usually translated. ("Horn" would be "keros".) The name actually does not refer to the nasal horn which Monoclonius is restored as having, but to the teeth which have single roots. It is helpful to realize that Cope in the same paper that he names Monoclonius also names Diclonius, and it is in contrast to the double rooted teeth of Diclonius that he names Monoclonius. There weren't enough remains to know about facial horns and this was in 1876, several years before ANY Ceratopsians were known to have them. It still isn't known what arrangement Monoclonius had; not enough material is known- although it appears to be a Centrosaur and they tended to have long nasal horns with short or even non-existant brow horns. Restorations of Monoclonius in dinosaur books are based on Centrosaurus material; for many years the two were thought to be synonymous with Centrosaurus being the junior synonym. CFLeon23:59, 8 May 2006 (UTC)[reply]
Rewrite
I'm currently rewriting the article as part of my Ceratopsia work, and this is one of the longer, more involved entries. it's taking me longer than I had intended, so sorry if it appears to be incomplete. CFLeon22:27, 17 May 2006 (UTC)[reply]
