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Re: FW: Even more concerning the Triceratops/Torosaurus deal
Dale McInnes <email@example.com> wrote:
> If memory serves me correctly did not Jensen from BYU
> excavate a
> 9 foot skull of a Trike from Montana back in the 80s and
> this larger than any Torosaurus skull known to date??
I'm not sticking my oar in either way on the Trike/Toro issue, but I will
mention in passing that the type skull of _Monoclonius lowei_ (NMC 8790) is at
least as large as the skull of an adult _Centrosaurus_. Yet, the _M. lowei_
skull has been regarded as coming from an immature/subadult individual (Sampson
et al., 1997). I know there are differing views on the validity of
_Monoclonius_ (some raised here recently), but it's clear that size alone can't
be used to determine ontogenetic stage (subadult vs adult). At least not when
different specimens are concerned, anyway.