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Re: Triceratops and Torosaurus
> Exsqueeze me? You think one or more of the *handful* of known _Torosaurus_
> specimens might be closer to _Triceratops_ than to the other _Tor._
> specimens? Based on what, OOC?
The flip answer: just like people have suggested that the *handful* of
specimens of Archaeopteryx, or of Tenontosaurus, or of Pachyrhinosaurus
(including here Ashcelousaurus) or of fossil hominids, or of Psittacosaurus, or
of Australopithecus, or of any one a bazillion different fossil "genera" might
be composed of more than one species. :)
The real answer: as of my last check, there are three named species of
Torosaurus, T. latus, T. gladius, and T. utahensis. Synonomy of the first two
seem likely, but the last has a pretty short frill, and might be a distinct
species. Might not be. Such a short frill on a chasmosaurine might well link
this animal with Triceratops. Might could. Lehman has actually published a
cladogram that shows this (J. Pal. 70, 494-508), although he was explicitly
reanylizing data, not conducting a thorough study.
So, as I said, I "wouldn't be surprised."