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Re: Torosaurus NOT Triceratops--?

Thomas R. Holtz, Jr. <tholtz@umd.edu> wrote:

> Furthermore, this idea that maximum body length of individuals is somehow
> taxonomically significant really has to go. We know that many taxa have
> variable maximum body size of individuals, so having some subadults bigger
> than adult individuals isn't rare.

On that point, some skulls named _Monoclonius_ are actually very large
- larger than those of many _Centrosaurus_ skulls.  For example, the
type skull of _Monoclonius lowei_ (NMC 8790) has a frill that is much
longer than that of the _Centrosaurus_ holotype.  Yet, "_Monoclonius_"
is usually regarded as a sub-adult _Centrosaurus_.