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dinosaur humps (was Re: A Whole Bunch Of Questions)

From: "Mickey Mortimer" <Mickey_Mortimer111@msn.com>

I prefer Bailey's evidence for humps. Certainly better than any >published argument for sails.

Perhaps better than any published argument for >thermodynamic< sails, but what about display, mimicry, etc.? Bailey barely touches on the other possibilities. He insists that the transverse narrowness (and sagittal broadness) of the neural spines indicate an increased resistance to strain in the anteroposterior plane (thus implying a muscular hump of some sort). But don't most dinosaur neurals, whether tall or not, exhibit similar dimensions? Why couldn't dinosaurs have just elongated them to form a sail without changing the aforementioned dimensions?

Jordan Mallon

Undergraduate Student, Carleton University
Vertebrate Paleontology & Paleoecology

Website: http://www.geocities.com/paleoportfolio/
AIM: jslice mallon

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