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Horned Dinosaurs and Their Noses
A few questions. First, anyone out there know (or have an idea) why
centrosaurine ceratopsids (ceratopsians, aka, horned dinosaurs) had
those anteriorly-pointing nasal prongs, formed from the maxilla and
nasal bones? I sure don't. And why didn't chasmosaurines have them?
Also, how does the pachyrhinosaur's nasal boss develops from
something like *Einiosaurus'* well developed horn into something like
*Achelousaurus'* boss? The boss was porous, but the horn not nearly
so, and while I gather that the porousness of the bone could increase
and deform the original shape, why?
Finishing my whining,
Jaime A. Headden
Qilong, the website, at:
All comments and criticisms are welcome!
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