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LONEWOLF <email@example.com> wrote:
I remembered a few years ago reading that pachyrhinosaurus, found with a
shelf-like ridge on its nose, was represented by only two finds, and
there was some argument as to whether in fact, this ceratopsian had a
whether this was the base of an immense horn that had broken off due to a
or some pathological process. Any news on this?
Peter Dodson in his recent book "The Horned Dinosaurs" favors the idea that
it was a big, rugose, flat-topped boss rather than the base of an enormous
rhino-style, keratinous horn. From memory, if _Pachyrhinosaurus_' ancestors
had a bony nasal horn, why replace it with a new horn made of keratin in
roughly the same place? Why re-invent something for the same purpose?
Perhaps the flat pachyostatic boss of _Pachyrhinosaurus_ was used as a
battering ram for toppling small trees.
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