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Ceratopsia Count More Or Less?


piranha

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For one... it isn't Horner's theory. Jack is a coauthor, but it was John Scannella's paper (and hypothesis).

Second - Farke's study revolves around a single specimen, the "Nedoceratops" holotype. Scannella and Horner (2010) utilized a substantially larger sample size of Triceratops cranial specimens.

Third - it's laughable that anyone considers "Nedoceratops" to be valid. In the one hundred plus years since Maastrichtian chasmosaurs have been collected from North America, a second specimen of "Nedoceratops" has never been collected. Only the holotype. And it shows a bunch of really weird features that can be parsimoniously interpreted as pathologic. "Nedoceratops" is a 'freak' Triceratops.

Bobby

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For one... it isn't Horner's theory. Jack is a coauthor, but it was John Scannella's paper (and hypothesis).

Second - Farke's study revolves around a single specimen, the "Nedoceratops" holotype. Scannella and Horner (2010) utilized a substantially larger sample size of Triceratops cranial specimens.

Third - it's laughable that anyone considers "Nedoceratops" to be valid. In the one hundred plus years since Maastrichtian chasmosaurs have been collected from North America, a second specimen of "Nedoceratops" has never been collected. Only the holotype. And it shows a bunch of really weird features that can be parsimoniously interpreted as pathologic. "Nedoceratops" is a 'freak' Triceratops.

Bobby

Thanks Bobby ... great info as always. Btw, I suspect you're not such a dinosaur 'hater' after all. ;)

So where do you fall on the larger premise of Horner et al, that the Ceratopsia as a clade are much smaller?

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