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2007-09-04 02:55:11 · 3 answers · asked by Anonymous in Science & Mathematics Zoology

3 answers

There are some dinosaurs, notably large sauropods and the famous armoured stegosaurs that had a widening in their pelvic vertebrae that would have been a large nerve ganglion.

In some of these dinosaurs, the pelvic ganglion was about the same size as their brain (which wasn't very big).

The relative size of the ganglion compared with the brain has provided much speculation over the years as to what exactly the function and purpose of the ganglion was.

It's possible that the pelvic ganglion helped coordinate the movement of the hind legs, tail, and possibly reproductive activity (which couldn't have been a simple task for a stegosaur).

Since no modern critter has such a comparatively large pelvic ganglion, it's hard to imagine how the system worked. In some ways, it may very well be that these dinosaurs had sort of an auxilliary brain in their bum.

2007-09-04 06:09:04 · answer #1 · answered by Anonymous · 2 0

Some of them probably had important nerve ganglia in the rear, to help control their more distant parts; not exactly a brain, but a supplement to the brain...

2007-09-04 15:12:52 · answer #2 · answered by The First Dragon 7 · 0 0

Nope.

2007-09-04 13:00:19 · answer #3 · answered by Anonymous · 0 1

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