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RE: again: frill of Triceratops
From: Jonathan R. Wagner[SMTP:firstname.lastname@example.org]
> One I would favor is blood support for a keratin sheath. Since
> Triceratops in particular had marginal hornlets, perhaps the entire
> frill was covered in horn. Or maybe all of the vascularization was
> there to support the frill.
Antlers on deer, moose and related species are a good example of this -
highly vaclularized to support growth, not thermoregulation.