Re: The 5th cerebral nerve once more

["David Marjanovic" <david.marjanovic@gmx.at>]

> <I know, this is well enough described in what I've read. But the
ophthalmic branch is called V1,
> isn't it?>
>
> [...] The trigeminal nerve (CN-V) is divided into the ophthalmic (V1), and
the
> maxillary (V2) and mandibular (V3) branches. The ophthalmic separates
first, then the mandibular
> from the maxillary. The first branch is always the ophthalmic. This
condition occurs in other
> dinosaurs, as well, including ceratopsians (Brown & Schlaikjer, 1940, for
instance).

I see. I just got confused because in mammals all 3 branches have separate
exits, so it might be theoretically conceivable... never mind. The sort of
things that happens to literature-dependent people like me.

> <So Oviraptoridae have 2 distinct openings and thus state 2 rather than 1?
Just want to make sure.
> :-)>
>
>   Yes, among other dinosaurs.

Good. So I don't need to include that in the update to my paper that I'm
writing now.

> However, it is still the advanced condition, even if it is
> convergent in other groups. Most of these are theropods.

Sure it is the advanced and the birdlike condition... that's why I'm
interested in it in the first place. :-)