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Re: Horn of plenty
styracosaurus's spiky frill is actually in a better place for intraspecific
fighting than the nose horn. I do >not think they had necks as flexible as
modern herd animals necessary to use them as such. Look at >ibex, oryx and
other gazelle-looking ungulates, their horns point backwards too. When
locking horns, >the animals lower their heads and the spike point towards
each other, and the fight ensues.
I'm not so sure about that. The _Styracosaurus_ skull that I'm thinking
about (the type), at least, has it's parietosquamosal spikes oriented in a
dorsolateral way (moreso so lateral than dorsal). As such, if the head was
pointed downward, the spikes would in turn project almost vertically, and I
don't think they could lock with another set of spikes with any ease
As far as I know, there have been NO triceratops discovered with a
significant difference in horn size >indicative of sexual dimorphisim.
Indeed, horn size varies a lot within ceratopsian species and does not
necessarily seems to indicate sexual dimorphism. The angles those horns
make with respect to the skull, on the other hand, >may< help to distinguish
Undergraduate Student, Carleton University
Vertebrate Paleontology & Paleoecology
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